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 0x860f887dbc974977f98dacba3199ea0e731201d0f580898431554fc3ad4b24e4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a129888a-eb0d-4141-891c-3bd270861b6a.json and https://artists.proofprofile.net/proofs/artist/a129888a-eb0d-4141-891c-3bd270861b6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dale: When Music Sounds: 3. Out Of The Water
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 0xdf39383b279671f96f0ff528f9285e96cb24f348d3c4f06d9eae6c8a697341cd. 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/GBBBA1800199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26deb42a116fad99ba5fc3792bd0f6ee48547f5c4c8d496b5c854cbc9d3e9b42. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBBA1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358be78df33c84b5c1d494f621502059ec55888dc5f9decda8ea1086c2c1d73. 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/GBBBA1800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2782d83d6e182b5c2769d90e665a928dbf83997abe7b0f2502835e614ee29a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBBA1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2424b4effbc8bdc82b23cf8a664449f45303e336911bd9a42a22f30503b3393. 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/GBBBA1800205.
Materna Requiem: 8. Dies Irae & Requiem Variations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535476564044363eacdc137bba0b7ee844516dd7a9ce03cc66bb449f809fb244. 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/GBBBA1800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501066049ee865ae7a42a98754b7e92e90a7ccebaa54d858fb45002a9ad54446. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBBA1800207.
Materna Requiem: 10. In Paradisum: If I Should Go
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635f722d8efa42e525412b5da9c8fac55977759df7447345337c7db381f85ab2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBBA1800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0c262c0ae9ab40a51e621312ba3b34d82d0ae402a6e686244a0c0f7349bba7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBBA1800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5052a0f4d44c41172c1e2f3f37cf20e62190a45259a94d036d75fa0daa7d8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:37Z), 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/GBLLH2183005.
In the Bleak Midwinter (New Setting by Rebecca Dale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed89ba5c1f163961acbd2c01e7acdaf96d9cfb12c09b59ceae47caf089ad20. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLLH2486601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7535fb2a4d5cbf10c45da7f7b585e97bcd582f6fd8a78b763361de2011b6cfc4. 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/GBLLH2486602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce92dc9c1ad72ebf1f965893507621bb361f2db873c36f76765b3b83b71c5c56. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLLH2486603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57fb714a2e4571831f1ca07e100c942c66793b36786c2f1d445e42ea446355f. 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/GBLLH2486604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af0d3a65f90355f57cb833845fd0569d1743202aec378649154bd95d1ae4e9. 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/GBLLH2486605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3928699c18358876759bc5c5cbdbad76243b73952e1d44fb2d11bd5f24ca60. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLLH2486606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bad04f5cbe3de7f293b818a0e14ff27776a8988bd650d7566116d1f727e23b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLLH2486607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c740ee2bad4330c4d2e3d94027fca4b5d21cf1a3924e1e0263ad948465d2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLLH2486608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fa23d1cddaa2532053477368d478d8d9fa903162e0c7d5d82abaead81f1b54. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBLLH2486609.
Night Seasons: II. When It's Darkest, A Prayer For The Dawn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65eb736e2c4b88671b0049bdc384bf21e23f745c6760fd878189c8e5bf5cbe7. 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/GBLLH2486610.
Rebecca Dale: Morphation I - Evolutionary Etude
Rebecca Dale: Study I - Rêverie in London Rain