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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977df640be5e5a25c98b13220e866e2df803baf7cd3c1541af5d56b2271f94b7. 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/48dc862b-17ab-44c8-849d-119102672eb1.json and https://artists.proofprofile.net/proofs/artist/48dc862b-17ab-44c8-849d-119102672eb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Do Not Jump / Missing You / My Heart Is Breaking
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ffaaff7243acee6d68b719f0d90c38acb6c5c7598632e9dc58833e59ff8a5f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBKQU1337967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984efe360527620f0410fc46c6a24a67a5719c36253176e2d5dfb6cd3614d15a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBKQU1418034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3831be8cd8d806dc15a9305b501b1e925a91d9d285f80a1398fe324723f0272. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBKQU1418049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5359af706872f9eb682b7e989807afbc7989887c2018c6708cf3c6468f85023. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLCK41025418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe843daad4737e4f983221867cdf7d8c51c6e6dfd83491daa8bd3c03f03afc297. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLCK41033164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221dcea48b6b062e9045e122a97ed5e1f16a3e273ad67100fb9a15e1485b882c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/NLCK41033166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b83d13c45f67ca741ac8056bba37fcade1572f0b5dedf5fb8c673860c240f0c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CA5KR1702349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d5b2affc36e9f059738d5e55fdf4b83d7e107a7896f1bf4c3de9d8bbe45fa5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/EEHN31500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830dd720ab0e7b830dc93351eeb98a9b19d2dd749841d5edef40dd4a7042ade4. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GB8KE2201451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d17e5ea72afa2b7155859a63348845be448588787cb76029d5f7f57f043535f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UKE991700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c09d555e291ace9b9f1873699ee9177ba381d61c8fd1bb424e0631955ec475c. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/US8DZ1400482.