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 0x24a5be75bdb86179774233738716a296ffef5411b2dff495a5fe30b9c7bdd9c1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d51c978e-2c0b-41b5-8ff7-cfe86211ffb6.json and https://artists.proofprofile.net/proofs/artist/d51c978e-2c0b-41b5-8ff7-cfe86211ffb6.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 0x1a13082430caf374f056ecf04dadfd2eece5987f2e8b1a959c5a7e9e562d3c68. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE6SA2021543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e308e0f3ddf2f36a2801d8e2103591a98119301731083831851480c4057829. 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/SE6SA2021536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cd8e5f7e12b6c2d162eab60c266e3b0c4c45f591eb708b07233218e3a61b75. 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/SE6SA2021513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfa134f06a0f695403adc1ab2728d61a9574084d85ae1117b75d14875f154cd. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE6SA2021507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0895af7fdbffd7921408980db3f103e2da35a79000b4de500537f11523cb74. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/SE6SA2021498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3d81761e1c6b5bf652ea2f6115e5bb913dcb7d7d7f8504aa3409562126203e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:31:44Z), 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/SE6SA2021496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a130c467272c7922e5b835f135ad55d0225979e7ef27e707c64bc5081feb095. 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/SE6SA2021468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46bc92e08f50b20011e44d1709b93c30fb745492abce290277a5eda027da33a. 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/SE6XX2171501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff916b689967f60cac333c9c0c734f27af07fa0748e938548c158d506d905af. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM7282325547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83116898a34030ae6b73355c4db41fb71734d374534ffbd1c422c564735a03a5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QMDA62329350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0116907d1c53a42bab3a3ce303e1a8762086c8d20cf79bc93da74871d33e1181. 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/QMDA62348457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53c3717b01c0464a5ca455281d28a4992f3aa13d3036a63d02ef32135b377cd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMDA62348445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09955f026257312e5253598d566707d7e31314af093fbb703f825b1091bc1b8. 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/QMDA62348500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37599376db4d98e249370a2d9ae689389ec0babd04afc24eb260d7335bbb2e88. 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/QMDA62348530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2e22d3e4fc9fdacd58960ca13f62da76313eed62cef2f75ab4e91843ac3a49. 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/QMDA62348663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6236356444c1845406ecbdd957ee368140b559cb7cd6b13e57f055dd1bd79dfe. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QMDA62348673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd1982182beefecb65dd77fd7bf4f29b0f586ccab1e8d235f519bb5c575e04. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:20:19Z), 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/QMDA62348678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffc7ce49cca8653322323cd20460c2ef3571c9a73274afaed170c9fd645145e. 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/QMDA62348711.