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 0x7a61849c6a069271c9b4361bc11e06099d20639fdb6f54b876dc5ac1011ecd5e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c23cc98-ac2c-460c-9bae-b369ed2e487d.json and https://artists.proofprofile.net/proofs/artist/6c23cc98-ac2c-460c-9bae-b369ed2e487d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Filipino Christmas Songs In A Classic Piano Mood, Vol. 1
Filipino Love Songs In A Classic Piano Mood, Vol. 2
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 0xbaf81a298094dbea56a12070284ce70bec6443b637a392c600bf12ae2b8c777c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PHU010509258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868bcb9c0f088701e0ccfd1b95cdc259e979f854c724f4f2a38c559ff6181416. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR6V82352373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5537098d3b2818df21043eb5b7bc1a6da0ab6fbf2faa0fb19e1dc8b36c5a61ce. 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/FR6V82352375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ec8862965147bd3dfe7773175e1096896b5d3b9e63d940ec2ba8153218048e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR6V82352377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151377045d3af9c0187a3af1edd184176dabc7fcb317fa35faf75750e87fe7ed. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR6V82352378.
Filipino Love Songs In A Classic Piano Mood, Vol. 4
Filipino Love Songs In A Classic Piano Mood, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb13121357940203b514b0d02649646257b4263c9d96f91a44aeadcda689dcf9. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FR6V82360755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c7b17f90dd9a5694791f7e1a7a5109c62e05f4f189f44cc4db8698d32b7893. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6V82360757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcf716b467d7a7b653774addead0bee583df3018dfee1f95ea08b9fac5452be. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR6V82360758.
Filipino Love Songs In A Classic Piano Mood, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ba3ab7cc81ae5ee1476273050f037e1cd4155b95a245bdd495119ebf007dd1. 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/FR6V82360710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4da1cf08ebec95414dbdb4f5917c5e1c3b76d7753b1d0b619b13a85808f130. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V82360711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1adb29fe9c209c139a7fec194ac9782f14ca19d13e1475b101ee72ce580b9e4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V82360712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110b821f645cd306766ba409b5b93e5bccc19b20ae644385c0cbd8cf4b8aab88. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/FR6V82360716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006ef4d19e5411bf3de738d0602cb004092e85e34b0eb4554a281f843167657. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6V82360762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2980f5ebd4989487eda0bcc36008b080f1953a30b705371c729215723e920267. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6V82360763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf043a54e946a70cbefb6817c6a482bc25a83372d80696a6fa628924d4ee9210f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR6V82360764.