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 0x2a642a27e5d459a6549829a76ad5369c72255f6c537761023609a77f1c31b686. 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/51d86be0-e212-467f-bcf2-7f8871bb2692.json and https://artists.proofprofile.net/proofs/artist/51d86be0-e212-467f-bcf2-7f8871bb2692.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Peace of Christ: No. 2. The King of Love My Shepherd Is (St. Columba)
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 0xfd4c79ae988a42e8b19bcb209fbefbe3eb5129c632e7bccfcafb0139d5adc2ff. 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/US7850910242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc124684882c43386ff5685d9c7a1b8cae3b0a7464c879ce72cfa46bd27f3ef6. 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/US7850910243.
Miniatures for Solo Instrument and Piano: No. 5. The Lord Will Bless Us with Peace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79374ecf3b68b60c10b0d8149738f256b8e45b0975173d07c31ff5aa11d3c01. 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/US7850910246.
8 Pieces for Flute and Organ: No. 4. Flute Piece (after W. Hine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495e11e8c9b2ea6abc47dd1560173df98e31822e4ddb61f9a00206f10b22d25e. 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/US7850910249.
8 Pieces for Flute and Organ: No. 7. Air (after S. Wesley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467422c20c2291140ef550b2720a969d94ceb8a0a3cbefba9e835d1c5b6f3781. 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/US7850910250.
Sacred Flute Solos, Vol. 1: No. 6. Prayer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89147fc57d33646bed67aa3ba9ec0257021cec68dd95ade179e80cf0f27b4a15. 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/US7850910252.
3 Marian Hymns for Flute and Organ: O Sanctissima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8872955d3f5c3bb5d5e49259ebc621db2329385f6b5a31b19113182fcf56672. 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/US7850910253.
Liturgical Meditations: No. 2. You Are the Image and the Hope
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8d317f43fb0444d7ddff8053d288eeec80df89093b93c7bfd60e0d8d1fbb3. 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/US7850910255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af63328477c3976f9901c9af951029d99b16ce8347c3c86429fec8775373597. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US7850910241.
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 0xf9a3e07ad42a88c1925037005d4c5e1ccd94c7ecd62c78ac1577a30880955aca. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US7850910244.
Sacred Flute Solos, Vol. 2: No. 5. Slane (version for flute and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5c56bab68279d81fbbe040646d842216126155d34020dc6204f6e1a546e544. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US7850910245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc77b62692dc9c8dd5d6007c97b0ec9edf522af30570793db78cd3872b161b6. 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/US7851010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a03def5c94faac52b32a2d7a857063a3df5fcc9a61aced1ee41d81c5059b73. 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/US7851010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583166f8cf4ac756fbd1238ce33663dcc25c9431f9cd2ec84a6f267eaa6bcc06. 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/US7851010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311f39a4264c062c615e16bf1f49f86e99fb3c8dcc3df4a1e6939cc8790b6f3c. 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/US7851010004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0aba2d0ac5a0ef50bcf37ebf307aa509f0d88b9e77867006ff9ecc3e183f3. 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/US7851010005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70320b454cb24ed03f769282f16f3c7d1c750d140980bc31d5e6e462c51a7630. 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/US7851010006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9819f5a76eb5c264bdd56ec3daeeef2e5964cea9c1267d0410f267e82c8277d2. 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/US7851010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2e65f7967ec6803b0f74e07344165f9ff4e17185f000b74ecdee16c6b9e305. 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/US7851010008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd441c06db60c507ee80531af3eef2818d4d4d221d80346044044cc5111b1555c. 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/US7851010009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa513c80eabc5102e5ed7ec01efe839eabca6055857b5e4ec517591fe191a539d. 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/US7851010010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5438fdc8070e0c9b764809f18c2bafd49d44677c5b4e150b3d9009da0ef9b7f1. 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/US7851010011.
The Choirs of Our Lady of Mount Carmel Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247c5a6580b50d5c772a032f48234589640a19deab47aec962aff9a4670ef8fe. 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/USDHM1629755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeffa838c67e5566de7bac753bc59172f2f01e067bf56ed52d9b498b521b50d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDHM1629758.