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 0x201b1211864f6e729ad0c6868ec6bfb85bf320a0cce0381e45a1ee922b9b89c6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e64fdf98-32a7-468b-8b0d-6519fb67ff45.json and https://artists.proofprofile.net/proofs/artist/e64fdf98-32a7-468b-8b0d-6519fb67ff45.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 0xb75775ddbc26f8bac17d1210fe501943affb906f5640d13dcea792c1c88958c6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB72371870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d01d8d7fab98ff76aa8efc06296d766b555232546b5a2582fbfc7d50ea2238. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZW9L2362121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9913337585ea7e331d92777ee012bb055ef280a0877f9f37cddbd0277f8e47c3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLS2467054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0107ce14445a0c8e7e7afc0bdeada52911770da0e5549a736e20956ee225d0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGLS2494570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa015c515644f1b2f0223c19ecce76fcf00663b46717aee00f22def217df4df42. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZQAY2422113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0198c5de6a32d4fb1af1f4a8ae6f14bc5170977ab70bf07ab2990a9fe20318c9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJW2417065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45adf4637f4dee4875efff9882a538c3308822737ed779384d6a77f0ab4b17ae. 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/QZNJX2411191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bdfa875e798a7811c517eb5973cd12036a9a4c9b176bcf5c8972905e0b85ac. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJX2453873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67004a500ce332ecb1cb0b76c69a5165c36b7a80ef1637b7f793a2a7aa273187. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJX2453875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3806a2b10c16e4d6f451299f8bf4f98c6ec6e71fb42ac6ad0f31c468ddb402e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZNJX2453876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d01e3301d905f98549891af83fdbd5d3bf208a277bc97ab372cfa93c21c51c6. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZNJX2453877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76090b1ddf9b46db31117bbd775335ad5e18902c6ae96cef597b14f42640af3b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJX2453878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed1b322bc2018b887b8979bd660032cc486d783a34a9bacd5cea46a070277e1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNJX2453879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c2b7190b881b6d16b4390a695122c10a6752c90f8f7d3f3d4343dcc9065108. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZNJX2453880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a83647ebcad73d09d7e8c90940fbff5871dfe83c9a1e6fc1508b549b40ece0. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZNJX2453881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2ede836278805f80afe31059f9177eecc6147b2f15fdfbd0cd739bc8ac0ed2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:06:45Z), 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/QZNJX2453884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9040c6a65e6efa3d30c141db36a5e5bb4f21af09194126a5c6a7f788be09ea3c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJX2453882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e9453e093dc44a1f10bd657442b47e778e7b2aca1de7f54bc3012310ab7a8f. 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/QZNJX2453883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b08c8dfd886dd5089cfddc44ef9d4d6af47bb90567872a77933a5c579a9a864. 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/QZNJY2477045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2754e9aadd5eee3ea5b6b48b99a942deb4e120653a40a282783b1094f32770. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTVM2416629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f7a660668f839c75653753bbee0187df9b5cd147f4c4978d24e7abe8743461. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTVM2421799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a392cef3699b8d1f20b8b45b0331513dd6cbfa9a5461498961813e23fd3392a. 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/QZTVM2450704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3852f8b35e3bcba1ba8586f2168c4318e0e73fa05f1dcee3c4e08e86ce6597. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMDA72425325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58422e2a550ee0b7241dfec0a60df222f90512cd5fcd4025dd668156b163fc3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMDA72468911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1032fb41bc0fa56980781a94ef1166474a688ea0f122ac9bc0723a82c2281d0d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:09Z), 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/QZW9L2414776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b3bdf74846183370acec3183e1f7da91a0e63e3143e7ee6ab90c126614985f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFME2486170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3504647eaf8f549c198df38e4eac321696f6e6d0c1b1f3d3d8ea65987c99d17. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9M2400494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7ab617769b12b0328a4ed4afc14bb56a0a32e0e9833f9647cb7a54f81f507. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:05Z), 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/QMFME2415207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161ac1771c3ca3dc286150189cb1bd66aa0be1aace1ed05f8af538ca4246bda. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGLS2561892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c8abb4204647131bd61d598ae1d5c75c2d62df46dd7be960ec1954574c7c13. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZMZ92520875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18e2e56d1744507d81a6df530d700850ab2f5ff088ec98c02613ea7a1c292d9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZGLS2555746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cca7d4b582ff80af4efa5f72eb3f1330b7f27fa5c3f007e480651b323f2bba. 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/QZNJW2514077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23f8ab5c4c9b69bf5071af383392cde941d8bebf1db5576afe13954380e53a5. 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/QMFME2506032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d14a8fa88ea92c5c9c66bc4f76a8cb42956afd2b824e9f7cc5a5153d0ddf61f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNJZ2579644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4aa8d1cdb376ff28d516b2b4f3e3e6ec33b97dd4d0a7f9575aa9161e523e53e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA72583231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4ca832fc4bcc4fb0e1a95a0ea6379d7162cf632bdbffb8d058a5672d4d86c9. 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/QZTPX2528994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbdb4a780e48f499da214fbf3a3ed6cd85c871c1b6a036903d0a0a4e1f4860b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF2507247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb82e0e01e119a6a96aae80858b1be5f19bec8cded983b7c54845309fed944. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9M2404488.