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 0x875057a31a67caf1d2d81d388f5e915c607bffb3f5de827ffbf4652fa1254d91. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acf2826b-9b71-410d-a8c5-36f3f372412f.json and https://artists.proofprofile.net/proofs/artist/acf2826b-9b71-410d-a8c5-36f3f372412f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'm walking (from "Criature" Original Motion Picture Soundtrack)
Criature (Original Motion Picture Soundtrack)
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 0x645b5e15666703199ffa7bcf21d077a4f5d93666c6e48ec15bb8afcf70e6d08d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ITC042400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b03711cd8273d2f940127b42b46aae6c902dbc8d2efca5b46f85fa663450429. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ITK252510007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5366dca3e57098f7345a129b715b81b4a0a8694343810ee76437f2421d1c3b35. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ITK252510028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5a05b60e7c96e2730fccf911304849ad3224c884d3eaaf5948153d4ddb5a9e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:58Z), 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/ITK252510019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7796c50761ae8cff34050f2a58c2bfd2f2401a5227659d205d54efd1502306d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:41Z), 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/ITK252510020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0d52b4f00fb40dda68a46f5dd202de046f8db235325cf6e1b99a172f5c43f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:09:08Z), 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/ITK252510021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b03711cd8273d2f940127b42b46aae6c902dbc8d2efca5b46f85fa663450429. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ITK252510007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0153653fd48bc06ee4267d058f87d0c570c471395f54147c302227f2bfe951eb. 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/ITK252510023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8189d131ace8d0a2681c53d66f694f5f70ad225ef0d0c0d20143761471825f34. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:40:22Z), 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/ITK252510024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdc1ba46cc5d0d4a93a63b0dde8471298339b247d9ee54e112ad8332bcf81d0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITK252510025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eabd13225bb127577c48230fcf95a9f26b6d993fedbf4570e65afda12880c50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITH521600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34f1f056ee04a238756fa3942ba15d6c78c967dc9aa48a14916b620b062217. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITH502223005.
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