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 0xdaa8378a9d9e3a861e0f0669f7b9a4d53732ce131b04a97e0ccb110630149d09. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0e71521-e76f-4c57-a064-66043bfa7fc7.json and https://artists.proofprofile.net/proofs/artist/b0e71521-e76f-4c57-a064-66043bfa7fc7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Student Life Ft. Daniel Ayo (Prod. Birocratic)
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 0xc222dbd7c81fec8e0ab5cc78d3a485c644d635974de99ca698b3fc610df5b70b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:50Z), 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/QZES72176333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f5df7057f7f9c2ef592406b9d75640c7aa4cc5b2d95757751e3075cbdb6ad8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNC2161221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960c231553444834872639ef46cc67c3f5ec284b599a309c27d2990a3be6dba. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZDA42244157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b219ff6a53748d7546323e0c43a57842572c22cde7024ac946186b70d6afc0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZHN82257806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4587611e3bea1660eed26dca81219f7bee3b98adfa7aa49ec6862ca00eaab46f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:19Z), 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/QZNWQ2222140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413e6756788e1ace0741e8d8e030d6a70311a4e04728cc0dc558ef1a2f6cc6c8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNWQ2222142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d75ba8a19a5879b9a7c2b13e385d7068a561a882486e4a6d9a491ab5775ea0. 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/QZTB22284576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc758a463d4ffc056cd1fdde0020e8d391fae034c7a14ce1e99bb2127de97cf20. 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/QZNWS2318254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35c0987ed467c65b58d18cedaf1e8324f5d59111875405f8c88a90ac783d44. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZWFK2378799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043d4ea6e666f3f145f39a9e171f69d8645760d687c8aa4209adee0c493afbef. 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/QZES92593789.