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 0x18d7c5ccd8de57ff2e02829483811c880813226eb0b7c5b28aa7212ef2b444d6. 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/cfb3ef39-81fe-4dd1-b7a4-0ae465403619.json and https://artists.proofprofile.net/proofs/artist/cfb3ef39-81fe-4dd1-b7a4-0ae465403619.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2817e5085f7b1b9b4d6a06dc334209fc9e65edcb70ac7a5dc7aad4ad7135e9. 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/QZEHC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6430bd6763aebc403d438cbfb558d682cbb09502e69df06a5e274de7f60195d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZEHC2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46dfbc786856cb556a5cc37ac9d718ce52dd3abb5fdb17d9ec0301120149095. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZEHC2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3392f528119aad7d3ac1dd5184f8b024291fd4df3505b840f5b7d2954d36d9a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZEHC2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1277ebe724892f26234c1918cd04eb5c27ee58b0775f726bcccbcdce0d901b. 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/USM441000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f20484eac318ecd0caa714519f5ef3ef8f750cd845dd4388fc4548841635f18. 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/USM441000008.
Treasures of Peace: The Stanton Lanier Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ad04b19d5411ef170b4c427061fd0c16c1fd2ea7a0d74dd1c8858e58dd1376. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM80553344.
Awaken the Dawn (feat. Philip Aaberg, Eugene Friesen, Noah Wilding, Jeff Oster, Jill Haley & William Ackerman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7527931663cc44c01e0afcba0a381a44c3c5177cecc8a77bbc2cf48eb3ad49f. 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/USK4N0700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a45b0a259d51103b16ada59ca6bb3a84315ea49e849acffc683b247500c08. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USK4N1100006.
Open Spaces (feat. Jeff Haynes, Eugene Friesen, Noah Wilding, Richard Gus Sebring & Tom Eaton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ce76ac70b1d368c66020e778f9c905e53fbc6e40fded8c08ba26a3bc085d4f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USK4N1300002.
Dreams in the Night (feat. Noah Wilding)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b869021eabf59af374d912fb574f0e27e37e5ab679b802ec2006435581e21d6. 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/USK4N0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3561a341d450b5a000e51b2b895b8d511b56be5d1bd29c1693f55268d3e96da. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USL4R2169055.
Alleluias Dancing (feat. Noah Wilding, William Ackerman & Jill Haley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f570b957869e484e819adf6fb53f2ef3b66fc4d0a638ae21f1f33bcc3e81be. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USK4N1100012.
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