1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12de68d52c4f735ff2e8750840a231bb2bcb458b6101c9bf70758a75fdcb421a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62a03eeb-6224-4bde-9016-b320a3ed800f.json and https://artists.proofprofile.net/proofs/artist/62a03eeb-6224-4bde-9016-b320a3ed800f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b458eebb69408ca99af4d0fa5dab2e15539c8c031f68b589c92691b345dab4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1948339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5610b93243e54f55da349e92ef64df6bf4f0d9068d7384f706fc6289d4ba205b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDK2105853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942a8cf84c5f173e41114d53b06e45daae0c05588890e87d4dbe13cb694fbbd3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2018569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992d4da1f71b49eb2a8bb4e96f01a280171d8f5251d216dd513e8662bcc981da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS662188074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8f8c3c579cef02342770a879f1df1da21cc26a90c10b0a1e45466fb2f1d362. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642136651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76462209ac0df51fe738a926e5bc9d67a89dec5325425b122f25913530328a47. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K2210796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef115895dc51284b3f5af6960622f260da0481f8d0a5fc9f0540c164355a005. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:28:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672207799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d1a192961c959e5026a7f15d66782b74a7d8405d9977f8c3480785e16b60a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS662294318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693557b9904c557a166c2c2fd787d7157258c1643550f963ce428478b285b7bd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2397354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73571b92015d9cbff8eee1c183d9c34f49835b8c7b76d4359a96685782bd7a9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652311006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c50b02ec0bd96c76d39bff0ca0e026ec87bd7c73445ffb09ec3120fb01a572d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2371476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b26053984ad940a7e3fc4bd7fd5b9a3ecc1b8583678d62af39c99208ce16b1a. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:50:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632363709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61f60a0c9ef177b44d37cbb5b1a5cbacea862eb7b1fdbca987188999db64bd. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2327794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ed32926bfdca41ead0f877a8281b6956088aa01af46bf0e3b6683521f4a85. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2344632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba29c168053b4c81a4b38b5cdd738ea515efe008ac0b68f2daef2b7524ac5e2f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:20:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2393374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c22f544e6fa11ec6ed462eb04505d4182c6c6ab78bf1d5480cb69e040e269. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652367105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf83ea694657dc290f8c8abdabedfa283226849ddd813963ff10c00f0515228. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2306328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48962d47f21eb51cded8ea74cdfd95d4fab3846d24af79595b08bca6a3e905f7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHP2338944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3938fa15ef8ebe7f00bb6fdd486a63094f05c612bdf972cd64e0cc8149f1cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2357137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ab2df84bb7ff5e31b9f666829ce710bc84441c8dbdb9a847eca217b0e660e7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52313379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a3c9b5eb6177e985e364b5fe3c320b472de0ea2143b093c3a9c935f13fb516. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642302398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3df7899e2cc19f5095ba145f3e9c8a33d9563b830066a29840b916b3bc1770e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2258913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b97457d5a324edb7bcd76fcc9c5cf4e40ebce6a1158a323668a8032d3cbb3d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2216867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63f03aa88ea3ae044f45f23ec52f94c2ac16c2ab7a0c12ddba6f54a03486734. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672250853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104e398a687575420343d07c272973c8a038ae7a0d3c5c9c7cd20eff8ebd593e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDK2265747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101db34ab38575a20a240f2fa3d81450f500c8702451e9fe9c0bf29446df02c0. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2251741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce7416a5159819003093fcc71cdba37cb40929eefdfdce3324d2af14293c43d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2230279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12628dd3d69f354b78dbdea28228589e15c2e1cd88cfbdaff60070214dc4baac. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672418393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cc28126b3908536000d2ac8d5ec53ffdaa6ba6ff2e20b3a5ee1d9b03cab70d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2475743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1783e4313aec57b39b5ec97b5281d23eb634d6ae24af116ce7097740292674e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642493804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930b8dafd5d0f259f1fcca2a2e47c15df2e8f89cd60afc57a1f481326ed27ab. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652464543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778111f2bb02335fe93c7d6a635f2bf9e14b82eb967a8b2c8489086f9609d04d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2461536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afbc10ce87eb084196867677e1085423cf527ad2871b837d328d0c840d05e04. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:34:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS662419427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80efdc031458bce8e6e3fb02985b42305d53a941e65d3fc3a897dd6e6433b9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31d4cc79e572df2e1f4e46cce4b57e034fd5a140d51cb4426f49ed66bfff197. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5625aba9cc214887a23767cd356c3055e2184874f33e2ae0c11ddda51f759b9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9d5385fb562bf3f8b432d41f21cd6f2025d7c6579fc41b3bee573ad71be680. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f162427508182b9fe400b641ce031b8ff4c2d1612839636381472ed3e4d054. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bccfdf762f87270660f82e378670f44137d870b2280407dba3f2f94dc43900. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efa598e4ff4cbe8186a6b2ed9f381fd15060a917ee82e015c49297ddd70d543. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0deaed99fcdfdd9c1057d3de56dc213daa417692bd2bd4b6c6e12855997fb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2530036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780d8e49a5ba779b0ebd21870a02886c32b4a0980d2e29c500c7f6306dd0e238. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32459614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e90b9c7828a09ef43e757c514258918cce596db5011d773e7942213c66fb2d. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDK2205713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb153bd6783e294f1fce130589e5d2b4c2b8fd6985994cff1148815d598bc1ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2245414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09b3f7003c6a7e3c78d89c7a17d3944656f3cee4f072c80acc0fbdaca64d587. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2229746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ba6be96c9b32bc8c7b6f33c7917aebfc40434714c564b4dfd8fa16532e6648. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652112090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a0acf27d180cbc5df4c9495161104ca7c98c5c8633c19eb43fdc0a63310e7f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672163961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc447297cc96004748bc342c522b5af5625490f655cb0eba27eefe0c96ef201d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22436841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fffed9429a6936e089410b9f1ae631dd9e0749b9315727678b2f6c95dfe4e5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2396431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc81f5c84821a5c7320f9edcf1b2a1c304424027baf73ea233e6dd8ea7165ac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42202864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f0fa9c02726b0b40d6cda7c98a9601db9f7549a772c20344cab840f91c453c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42202866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00e18197dbb68450f9127afe8eabdbb82a739e95f0e32760956c1028e964051. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632208169.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4638c97254235e44d61978c18d0249e19490f4e75fad1ae1d6a558ff292f088. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672195674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea7c9c3b0e1716e3ea1da53805afc5e27ff3fe6adb801f3e93b71c47856e71e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672165800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df13301494538fec259e9d43dea79c62ef482aecda95fa176563456aba72f3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2287918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4199a27445e2dc1ab7fac97ca1cc46298a44e49a7179058dc31750bbc2ec8db1. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K2118621.