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 0x600adb25a2ceb8ba80b1a7a8b8f0dd88fa38d2c265f0a5ecc43aa21cf6a1a888. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/deaddd2e-f0ff-4c4a-9d53-f4ac810068bb.json and https://artists.proofprofile.net/proofs/artist/deaddd2e-f0ff-4c4a-9d53-f4ac810068bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerts Royaux, Premier Concert: I. Prélude. Gravement
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 0xf2ab57ed5618a710402c6daf6b46807b01fd345e833062abc03b77eb4fabd6ed. 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/FROV61519601.
Concerts Royaux, Second Concert: I. Prélude. Gracieusement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5a6fbf28033fb2387cb3e0a6a68208382e83f4384d13b4847e970821753d1a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FROV61519607.
Concerts Royaux, Second Concert: III. Air tendre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15b3b70917f01c4877068c815b6c0216c807e7328f392ab56816bd9295d4ea4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FROV61519609.
Concerts Royaux, Troisième Concert: I. Prélude. Lentement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46aad79b5e63fe95d4a06ad125f3ceb88b1e3468d4188162bb11d02f009553a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FROV61519612.
Concerts Royaux, Premier Concert: II. Allemande. Légèrement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c3ff2dbee05b130aae19715ef9b724183f81ac8e628ea763a188ae122d1d2c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FROV61519602.
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
Concerts Royaux, Second Concert: II. Allemande fuguée. Gaiement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0176de851c6fd0983b07a2d842571b3a80fcbc72617dc5d41de6d494c64f242. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FROV61519608.
Concerts Royaux, Troisième Concert: II. Allemande. Légèrement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc344246f5a65086999256f8f681f9a0a0d78fd122d955fc5eba1c80add9ff863. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FROV61519613.