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 0xebe65ada9b91b64772cd14688929a26718035d4425465573290584f0481a398c. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd92cd5d-538a-48dc-887e-887b962e97e1.json and https://artists.proofprofile.net/proofs/artist/fd92cd5d-538a-48dc-887e-887b962e97e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fyrisån (vågar inte vänta) [karaoke version]
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 0x7fa6bd9112927697d52385c8fbd7dccedefaf17be1dc93696eaa51b17f81bcd0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA62497341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f7781dab536bc1bda0120552f01ad298af919f44f511efceb58fef6b884934. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:09Z), 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/QMDA72444406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf24358cfdd3e85b61afea0a944aa35b7542ec30b15a96a0a62ca91ed5c69e95. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QMDA72447376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da297f91b71b5df25c8103713365f1028f9e8eb5cf705c2261d992be2d84d8c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM6N22545125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427c76585c02677c4c04982f78d2e146d82e287c68174e8a33b2a77946de70c6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ92524729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6332e47b3ba476beef0e9a946f79a1baf85f7049cf327bebd4d387949bb344c6. 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/QMBZ92570124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b0c9ab787daf2d5feda00a13d39c08225aa3e15d17045aed2db303e5102ae7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFMF2540939.