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 0xd7d31bebc8d0a0d282e6c58dd7dba6bddbafe000b63d3e5edfd2bcd3474d0032. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/307e8415-704a-4d8c-94bc-ea4fd0ef507c.json and https://artists.proofprofile.net/proofs/artist/307e8415-704a-4d8c-94bc-ea4fd0ef507c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x71dc13180b4c586d7df26e9a363381f410bf33e8fe71d57adceeea1ce8d38755. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE3AB2101505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa945a421fc26f5993b33e7bf6365600019589e66c3a6389f4f7dc418cdaacab4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SE3AB2101507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7253857516d61ac6b8761ef276c6cd8896fdea175bf15ccde6afe15d2c22ae6. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/SE3AB2101302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd060216be87c71b32e21c056d4e010b924c282e646d6ac0caf1a0ad76ced2cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE3AB2101306.
Locked Grooves (DJ Food Dun In One’ Remix)
Dagens Dubbel (Motormännens Svenskt Travkriterium Remix)
Riposte Erik Satie (Slim Vic Interpretation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab79877ca72914fa445898bcdde9b24363d0937d3109284bde3ab325898e51e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SE3AB2100903.
Fire Play (Slim Vic Remix) (Five year anniversary edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a3a967ebf6efd039d04ba4acbb4fcff4414986885354591cbe815814535934. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/SE3AB2002202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004dda3aafc44ed4e80672fa2f668dcc6f97503e5f7765353fa1c5aa41b7d68. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE3AB2002101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af815985c78595cbbff806e42be647c56fb641b080a961d84dca653151191a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE3AB2002102.