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 0xabbfd7751ae6bec393d6b20654e5bede84dc70994a2e61d21332dc8c33b69b43. 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/9ce3f40e-1dc2-4ed5-9fe2-f63f68572a21.json and https://artists.proofprofile.net/proofs/artist/9ce3f40e-1dc2-4ed5-9fe2-f63f68572a21.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 0x85c01377f94431b58a4ad5df9f4f4c1d4033bdd430073e141d2fed82b1084c90. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:51Z), 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/SEYOK1533955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c248b73de78564754db39307bbce1280f364e3a7afaf0aa3acae0136112df0d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:09:42Z), 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/SEYOK1533959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf646f49a3ea8de0db352248c1838e20c3b1aa4face9a27af30ca974fc3d0c7f7. 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/SEYOK1533960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbd062e3a8fcf9b06ae567502d17cb5c3728ac0877a26e4a82963d20cae44e1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SEYOK1404012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd6da4e74acb0c0f7b4aaefa2bb21ff59f7e67d19d57cdaa8b66edb467f1ce. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/SEYOK1533961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5d35bc3ca444de14c49a0c50ed9bd4ef2de3a7a1c972415b71df05f69fa2da. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SEYOK1404015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68120de82e229d4c9c963dceeabf48e62628722376c7af69c02a2f8fe9a0c916. 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/SEYOK1509055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c28f6784048d7e105dce09c23dc2fcebf7bc84c4f0a0b6615b9f556adeb780f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEYOK1509057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f1a653f1c2e4c0254d75e930effdd68dce95e8ecfaa1d63aa720f5975d833b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:44:50Z), 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/SEYOK1509058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1441cfa653d7fd88ff87462b65cd1cb3fd1de40bdf4436dce2c066aef276516c. 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/SEYOK1404018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1182168d840049edc8df4f63afd7fbaea966936ab69663e1a1b6ee55c4124. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYOK1302429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0a1c4802bf4531e4bc9d8ec69ecf1633eff73189760b1fe204bd56c49d0c38. 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/SEYOK1302432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d9fd775d69de6c21113a87aa4a17a385e350363901f28996bbf5dbe80d90d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:06:17Z), 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/SEVKN0600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7702284ca5725ce1245212dcece2edb44ee9a30fe0e2fb75cbdfca8dd70553. 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/SEVKN0600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088eb098ea6ea8af835ba74c4525c7a787e744a64892992fab78e780e9b9385b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEVKN0600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362a6fa29c9290e86df7e4e8d76584fe8ca7d3e0fe8bed74c06300265c41aeb9. 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/SEVKN0600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88694b18412ee4faa0aa4129ff207ccd0f0e2f2e28eb8d40b31979f6eea2c81. 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/SEVKN0600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093e90c4823b6150c8cc38a819ac5c5d8a1f674bd894c36b3d203d2af9364c2e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SEYOK1404023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5f488cd8202e51816742d8ec38b64a1a6a250e7518f8a769ef2b72de2f1f21. 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/SEVKN1300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aca2032e9e4881845ede7bc2b8246da38d1c732debd646ebda81138e3bf461. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEYOK1404027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429cf0e9e475279faeb297694f3c13ef89081d17619963670088900483f24942. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SEYOK1404020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f59e8e8b4d57f2df1bae69b6676deef53e79b814d0bf630dd6becda6fb443d1. 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/SEYOK1404021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97e21793f6b7a4545e4a8d1d2238546a4f680ac2aaa7a34db4ad9e57f9414d. 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/SEYOK1404026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f4ea6c14b5d2ccf13b8032c7e75cbb97339635a6fb9c2e8982272f3d1b2c5e. 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/SEYOK1668826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3fc7c22098a1a8529acff03a63db54de4d6dd51fd861e88826be56bf4d3a2f. 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/SEYOK2157360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb19f396552b7d952c7d67bbf547e33f277ed6ca4fb7d774277523275d30cd9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:01Z), 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/SEYOK2505504.