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 0x176ba6881f8ccdea1b726a7b0f706eac7e2d6ab3550f154b04488309ab2d8018. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66645fce-6f87-4566-ae9c-312c261a6ced.json and https://artists.proofprofile.net/proofs/artist/66645fce-6f87-4566-ae9c-312c261a6ced.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liturgy of St. John Chrysostom, Op. 31: The Third Antiphon: In Thy Kingdom
Rachmaninov: Liturgy of St. Chrysostom, Op. 31
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 0xb4f37a221d656991408429921944e505299d439243dfd08a1ec7a6e270dad82a. 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/USB8U1600418.
Liturgy of St. John Chrysostom, Op. 31: Augmented Litany
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c300db32fa505f1e0003970cc568cca215e667807cebccae86e854f75fcf9f6. 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/USB8U1600421.
Liturgy of St. John Chrysostom, Op. 31: The Creed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdfa34879d35cea2c83f5962c689318e28133177ce04c59faf189ac0fefc28. 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/USB8U1600423.
Liturgy of St. John Chrysostom, Op. 31: We hymn thee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf282273d0ec431ad038f4ddb981186e82f546a07cbb6c06a00432a21180ee2a9. 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/USB8U1600425.
Liturgy of St. John Chrysostom, Op. 31: Hymn of Praise: Let our mouths be filled with praise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07341765f6292dacd2e7a063cb002bce8025be6a929f7abad0d869d4f10b56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USB8U1600430.
Liturgy of St. John Chrysostom, Op. 31: Glory be to the Father
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e49b834c04a037d49c2978f62b2c8c2b12eb4f74912f850d1032099386c671. 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/USB8U1600432.
Liturgy of St. John Chrysostom, Op. 31: The First Antiphon: Bless the Lord, o my soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c61a5a47fff5dceea7ddb4ef23a97b566426bc0e80d372c7f1343c464a80983. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USB8U1600416.
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
Liturgy of St. John Chrysostom, Op. 31: Glory to the Father
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3742372bd6a14c2743fbb62da8981f1554cce7bcd0e693bb54c48707afb22b04. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USB8U1600417.
Liturgy of St. John Chrysostom, Op. 31: The Little Entrance: Come and Worship
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0484be9b1da75a683e5d5b67063d2c075e89e1b86be9db6be4ddca855b4a96d8. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USB8U1600419.
Liturgy of St. John Chrysostom, Op. 31: Trisagion: Lord, We Pray that You May Be Merciful
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bed0f4646486cd48781e2aece3c6a39ac6e6f29bcab55ba6656709dcf3bc7c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USB8U1600420.
Liturgy of St. John Chrysostom, Op. 31: The Hymn of Cherubim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049dd42f4f7c75504fe1590f214fe47ecbcd80202fdc862cd0cbf748a42b43a4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USB8U1600422.
Liturgy of St. John Chrysostom, Op. 31: Hymn to the Mother of God: Meet is in truth, to bless thee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0765a0203c2c13a5f27b304380cfc195c8f087e51277ca38453f8bebf589d5d4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USB8U1600426.
Liturgy of St. John Chrysostom, Op. 31: The Lord's Prayer: Our Father
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533801aa057c4f276d1e291fc174edf6fe4a814b14a06b77f28f69c23e083576. 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/USB8U1600427.
Liturgy of St. John Chrysostom, Op. 31: Blessed is He and We Have Seen the True Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21a291a416b73a032b74f5b44e19c592781189f9d107c450c504ce153f43221. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USB8U1600429.