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 0x477607256bb8abe77f19ce538f8710f143b72f31c2a8b78bca8b1f1279a9d0dd. 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/6832ae4c-1483-41d6-b8b5-459eadd6600c.json and https://artists.proofprofile.net/proofs/artist/6832ae4c-1483-41d6-b8b5-459eadd6600c.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 0x627d0c9c9f7ca0f1e189544ab07ec701b41290968f4e0e9e86d37abd6392e815. 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/AEA3A2241948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523962a79b9e57774ae31c588817a21a73e73db6f629a0f69a2f941493e35ae6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AEA3A2296634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57833ac1ced78073317429ddb2e1e21c76eb9b6f411b0132c2432d340a2d4e3c. 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/AEA3A2233336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef58ab1151b4aaa2160cc933024ff21bb8fc3d468f659a4f340d7fec61f6682. 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/AEA3A2229009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb177bc7e8bc955e4a4fe067f036ac96e0078a9ea5348f7a234516592a53d33b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:13:06Z), 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/AEA3A2277710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9f3441de27323c86decda6ded9249f4df8d96b31f03373b15e8e6b35b9494a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AEA3A2295914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb74500f9fbaa6549621f558ce0e5489b232ee4f8c7d3d949e89feba12194fe1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:57:22Z), 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/AEA3A2262300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028547fbc31f27f6829ff999b10167426adec65e47bb34b8a7e1b880f3c17751. 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/AEA3A2267258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2f75105da8237899b1fd8c8d06f0a3706668a9571e8c9b0fef011d873249bc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:40Z), 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/TCJPC2473562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb46a1b7fc740639475489c60187072c482bbc1ad8dc34b71e81cf7bac3c4a. 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/SGW502287989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbeec2dbbb3d98a802646e42aa481312b00dbe9a3767c3be1cd6d2569696bae. 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/SGW502239586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcede1bcf83e91b01700e5d9db3a19dbb3ceb463e9736dd7897e160b8ff17bc1. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:46:58Z), 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/SGW502203328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a71a30f0c1a5f289d17c647e4431dd5963fd6c3c38fe1932f329bc873103fa. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SGW502224386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf298462cbcd9c308894899b3ced863acdba5159381bcdb16149d77b6f500791. 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/SGW502283929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c46a0810b5932da3419717d86891dd7c97116ce823c5ae81939ebb8721f6aa2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SGW502231389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2effb70181f565e2e1d0918085674e8224927cd09f5f156a710126885daa19. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SGW502222236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1057a3562d3980042cc357167db0548228deb6f4177429a6e3fa85694e06431. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:41Z), 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/SGB502581979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e3231e2e2165227f374548a7d79494b4c12feda9c6d73cd79da9a17c67f95e. 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/SGB502549526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a7bde118c3ee7aaca192899de610810826314741ca7759ebb94fa07f180231. 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/QZNWT2566642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fca14e27841b6aedf111b7d0250451ea19007843b4672970490bd6885e34be. 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/QZNWT2566643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c67506465c40d3292aabf5fbc25e795570084008707de09383e4705c46fb03. 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/QZNWT2566648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893faa6124e884847f2b309bbc2b244250878bd810e65120a4b07b2bf681cc41. 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/QZNWT2566650.