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 0x6641460172ee0e931ab2578c4865c6473c2df8ab4d31d66490f35ec6372062a5. 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/28106300-f9db-4c64-a116-62b337a2be57.json and https://artists.proofprofile.net/proofs/artist/28106300-f9db-4c64-a116-62b337a2be57.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 0xa0b93c5e84d7fcda25c2fe6ce5eaaf3eefe09851ac8d3c0fa21e17f2a3f74184. 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/QZMHM2214467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7c07713014ae7f65b3ebc2c1036e90334c4475c3305b6ec3f3b3a162da8364. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZS672285194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33658e0008c317437b739bb960479943d702bc7c72037796f92c0da8578e26a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:07Z), 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/QZMHK2218583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9850f71493bf33507b045dfa61e486a759df971ef3aba8994b97aac761a77b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZS652268318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafa9f199c0ebcc54b3a36a31d8d49d9f7ad8a141eecb5e9b861533aa04d7b81. 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/QZS672258413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1f6fe261b32c4b4fea36d1515ea893dcefedc0ee26305ebb2065ba53eeaaac. 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/BCRIZ2200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4b4e576284c58dbe1ece78f1f01f1b83cf7f7720f948f4c8e6875221ce3ab. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/BCRIZ2301618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e868af42c7e0091ca1a1dd6ca9e2653a9c3c097fa1c05d63fea11f6c9721827. 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/BCRIZ2301619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fbc38a679367c24686757d48e4d2db64e114557b4fe05b4dc079a76ccbacaf. 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/BCRIZ2301621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098a8852f6bc882835760e1298522141d534ee3b4c5ffde1ba89ac06b034b320. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BCRIZ2301624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01974e31c20af647d0cbb1905cf54cf9f1381886fe24c250db5cc9ec1b9141b0. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BCRIZ2301625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4226673100ab3b0edf719cefddbe10eb107eb65ab929a5bcba15dbd3022d432f. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:51Z), 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/BCRIZ2400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a2a8c6bc4a304a4726325d861c52111d29935cc7df45cbeab434e74e2efbf6. 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/BCRIZ2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5499c01b016e30ecb732fe2e294af7dc987163bef884765c062a2ff5a13d904e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BCRIZ2400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6bb354aa74ea69811a40c0518076e3288edefba3306d4d42ba4432b7008a63. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BCRIZ2400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cdfc71644491c8d50404e00982e582523c42fe10166a5f8ee1d3204ebcdad5. 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/BCRIZ2401291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694f476bf6079e161e81b7392af2f8a2f7c2f4ddbc37927c200f2a9ea216d51e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:14Z), 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/BCRIZ2500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf822b4841c75996c777658e955b058915f1c91e15dc2d42cb5e632bc3408157e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:39Z), 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/BCRIZ2500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7514edf0166be2ce1dff63397c28370c1fcd7d8597d6882147a4f7b1727b6fd. 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/BCRIZ2500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a485bcc5028eb9883ee2c0d6d9ae1a92eff6e48cacd4e93e899b40369970233. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BCRIZ2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9102b5ee07672ca760c3894c9d514b2b1929171210dc3d0fe16333f6f00900. 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/BCRIZ2200643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483d7fda9cd002609ccdf48003caf94dc127a4679d924858560b36f5520336f. 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/QZTPX2392070.