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 0xd20e23949748de38d7f0cff43ed0673984d63616742322a2d40817de3e8bb461. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3547cca-6141-4e21-93f5-820431a7b776.json and https://artists.proofprofile.net/proofs/artist/a3547cca-6141-4e21-93f5-820431a7b776.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Road Trip to Italy - Christos Fourkis Remix
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 0xdf5e608c500385c07cf81b15a0e0f0cea8cecd020000f749c9ecf02b3d9d512b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:33Z), 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/ITJ951400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c48b8ababb23787fdd0390c12c0ccecd0c4fca56bc5ccd208942730cf3cbc88. 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/ITCA91500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92b80b9a48f103bed6336cd2a577e705dbc12acb815f1e59b6d31379dfaf7a7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GRFM12000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7292b8b6193eb2b589e40c2b41662c0c745cfd70ae97e81e4d2b8e3ba2f197a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:00Z), 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/GRFM12000772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d5bd58d3bdd326677c334073054d2506d2cc2be8d595dd4ab4271045ad3862. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GRFM12100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e1553d9674358485d32be84f7ce4fd3f28856448453f07cdf8b9387113178a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRFM12200579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f228001370173a99576348d31199bda795e0fe18bda9b45bacb5e0e49ae231. 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/GRFM12200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449017c245a9af3b2fc1181af65a734c39ae9f5c952e66755111f0579c18ba34. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GRFM12500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf769937927ebf6a201fb39a6f2f168cc9be4911c791c6f552f296d780474714. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GRFM12500569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1877caad99ad8d352011d80c20fcb50c0c214da184f9186fc579e64d3af1a123. 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/GRFM12500617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ec6f14cc17ce2aac5139a7456bb32f904ee17efd7c5a502914463ed23bc9b6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GRFM12500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53358d28699458e67e635e4d94eafba7fbdb47a6c2c58b337e345112f1f4f224. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GRFM12100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1917457da701d055f0bafa4e8e46e33fef764ec2acb08ccd3854dae8c3eec09b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR26V2004742.