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 0x1644f76412fac66c966e9d2a128f8f30db19aa7eca791a48452386a845651bed. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e41de32e-98e4-4185-a292-9e01b799005f.json and https://artists.proofprofile.net/proofs/artist/e41de32e-98e4-4185-a292-9e01b799005f.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 0xd6b933edd8ac4f62fe73b95c354a656eeae29622d824a452b97d87e26cd681b8. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CACWV2537310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7134456bedf016ce297eb2157ec000fb753f886a22991d3c125b036d920ed987. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:22Z), 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/CACWV2537314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a84feb60f9b6a0ab6f5ef07aab39c2702b9630f410e4803dd89e5b088d853e. 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/CACWV2537315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314583895c2941e607443f7687f4b77f4d061eebc8cb60a15d804efc0000d0c4. 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/CACWV2537311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e2bdffea89ecfd0542f7cf73557bff77945d265bdb619af141052405459e57. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/CACWV2537307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5327be9aa6cfea16dbc0ccee66a01336dda2a5d16b27555936f9cb27c8aa8d7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:56:45Z), 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/CACWV2537308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38052fca9a2fcac8c4434ace4ec7cd2b6efde695b9154e5930dc3414a49bdc71. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/CACWV2537312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8860bd86ff65e8d3d42beaa4fec7e5142583f65dfa1abe9a6108014ce1f37771. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:02Z), 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/CACWV2552160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a84feb60f9b6a0ab6f5ef07aab39c2702b9630f410e4803dd89e5b088d853e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:51:45Z), 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/CACWV2537315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5327be9aa6cfea16dbc0ccee66a01336dda2a5d16b27555936f9cb27c8aa8d7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CACWV2537308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38052fca9a2fcac8c4434ace4ec7cd2b6efde695b9154e5930dc3414a49bdc71. 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/CACWV2537312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6226fa3e4b073611a3152503deb51216d29415570cbcd68ecbfd6edb28f4ef1. 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/CACWV2537309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e972153c1f4e47142e4f4946bff8a87332c9f0b41c59902f780a43bbd2e14. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:01Z), 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/CAGOO2558445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4abc7ddf7d973a95aea61f97f214350f17e1357619622e9fe8c24fb0efcc70f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CAGOO2558446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119f2596e8889c7bb3c64fa617ebb7550e156e4fc567cd9d28c1c64c4d456e1d. 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/CAGOO2558448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e79f668e9949957853b44a63c68b91569fad08086b9bdb7c3d0e7b3d563f93. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:19Z), 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/CAGOO2558450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b709f8f3d6767221b02c664df4d4de51cdc345cb92acddca3f5dc238733b94. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:06:42Z), 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/CAGOO2558449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb2584571811a1a04c4dbd358bfe550d3978a8be7b2c7ac1ceaa443c7550e7. 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/CAGOO2558452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f638fa4ca22405799ba70019189db1af4054cd2c5a613915276199c00cbf8. 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/CAGOO2558451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0711b0b22528730ba476042201dfd9abf9365f687b05532ce24d4b437587aefb. 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/CAGOO2558454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19f3e170ca7696fb9e3749d443aa409c9b06397cb708e896b2a986648915d52. 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/CALVP2575606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a88290d1d7c9997887c9ee2260797c875aa44b0cec81e5a6ae8276b634c970. 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/CBEYJ2504348.