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 0xacc48d2171bd937c2312c0387f1d7d730a56cef887b0bbc416ab84d1191c52f9. 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/6d1eb710-ef45-4954-98db-cd106090725a.json and https://artists.proofprofile.net/proofs/artist/6d1eb710-ef45-4954-98db-cd106090725a.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 0x19b2867188bd4c13ad2940344379f52668e0a3ecbdd391c50f3bdd64565823d3. 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/QZK6H2440109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dad98cc3e8ac0d74ad13ebc01e5975687ae36b5950746c7aa5ca97db1ae29ee. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZK6H2408320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e7ef1ae9e957b8cb58ce2db0466a2917759781d9137a8848a17c55ebfe2e5d. 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/QZK6H2408321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1c55f3833fb4471b57b60803a41f329a768d35b6b79e5bd62609a9e0cdef11. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:36Z), 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/QZK6H2408323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860bb67c1adab4ec457892e569fb1e85ebef45aa00763d5fd423f1d164a7e00. 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/QZK6H2408324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f5320b08addf082409c52fc2d5a4f0bd8848b51fd065c62ab94d8e95270549. 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/QZNWY2475120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a256552ad524afeac9db3c7246fa57c184f7641c9e4315db9f6b99e74630cf9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB62465560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67f162c96263b6c92ff36d0fc11ec8024b1b919d3fa2508a9896f2b470522aa. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTBC2402579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745cc65c51d7a1d1956cc93b7e9d623ca9e2fa094f4730ebb37f68e992797799. 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/QZTBD2467017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b497584f02f6d5df4f0a6114044aba42624bb171b26920a702fe4c98d441852. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:01Z), 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/QZTBD2467018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d12fae95027dee80e8ac08479f22de4e8797d0d2e2006256e63ee394b696eb. 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/QZWFN2473240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc3523517f7881b8852b5c7277b60aa36dcc91d9a047a4fcf4836e4b20a3e12. 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/QZWFN2473241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460e5ebf07088519451dd42d5ab86f175a467b4533e869c82e6aafa9a45e2e21. 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/QZWFN2473243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9db5acdbaf176dc8d0ef259fdc1db17eefb067c158b0abf028112c60a1f2f39. 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/QZWFN2473244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87aea5dae85719a3344d9b4e5aba3fdab5f9d4036b81b7e07fa3667ac3f352d. 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/QZWFN2473246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6f0e5e9f2515f351c83841acdcb4472f8c0400c613f4f4e2d896e23cdb0428. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:54Z), 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/QZWFN2473247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c907b4e0bd4df040f17bd3b4f9301d8d5048e592a75f70c635d6e2b93228fbd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFN2473249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb593887be2744b150b89e0ab549c5b1eab262ffefe0eb6fe611adc1ad8b74c85. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB32537980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc5b332e9e160bc7e068ab3bbe924517c4e50440c03a8f6d40bec53032fafa2. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:44Z), 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/QZTB32537982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6d47f2f5df0f948ffddbdccb9bf01dd8eb8e8f921c32d0a11077d4fa0bd46a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB32537983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cf73ee99386e22f6fd5400523f0e5ec1bfd8b06c573454584f5104fbf0dd46. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:03:38Z), 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/QZTB32537984.