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 0x2009d877aa000e7d219648f6dc568d08490f31206e76725e8fbc5d0dd7f1cbcc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07b923f4-86ae-43ac-a1bf-03b4e58cb303.json and https://artists.proofprofile.net/proofs/artist/07b923f4-86ae-43ac-a1bf-03b4e58cb303.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Organ Recital: Elliott, Richard - Bach, J.S. / Elgar, E. / Karg-Elert, S. / Schreiner, A. / Durufle, M. / Wood, D. (Organ of the Mormon Tabernacle)
Wir danken dir, Gott, wir danken dir, BWV 29: Sinfonia (arr. R. Hebbie)
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 0xbc69c60ac103855e458cf20c48f6efcb2c7334bb6ac7f10cb23dacf88e80687d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US2WU0900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba00afbc2b9bbb95d8a3987ad1360f1174852811da60c4e39a597e9475c0ca3a. 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/US2WU0900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4309973a4ff41de9c37cec6b6d3aa626d2383c86e1b1e8fe8146bd7fc2900f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US2WU0900258.
Let Earth Receive Her King! (Joy to the World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f52e5d2e7e8a537132f6ba1d9160bc0218b184ce27700bd860e0096c08bf6f5. 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/US23M1600120.
Let Us All Press On: Hymns of Praise and Inspiration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00efe351d4cb80b6a93415f3cf58d9cfba3169741becab3ede0c3bce936add13. 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/US23M1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec277cbdd05a715a9b4c4629342a541cb0496252e36c542206a9e0ff51ddb79. 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/QZRDE2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3ade5a3d03bf4b586a2b558615bfcdb1232e4f0f9747bb704f99c8066cb45d. 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/US23M0900194.
A Celtic Christmas: Irish Jig on "In Dulci Jubilo"
O Holy Night: Christmas with The Tabernacle Choir & Orchestra at Temple Square
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef7f9c8bccd0ea04d5a6f61588c3141e6a528627e26ae412e0855bcfacc931a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US23M2200190.
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