Gregorian Chant Schola of Saint Meinrad Archabbey
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 0x65bc1dcc475a8003e5754983e2f91d6770fe7693110132a3ae26288db9456870. 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/5df54ae0-1372-45f5-a575-082cd25b1927.json and https://artists.proofprofile.net/proofs/artist/5df54ae0-1372-45f5-a575-082cd25b1927.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantus Gregorianus: Cantus Gregoriani Traditionales Vol. IV
Cantus Gregorianus: Cantus Gregoriani Traditionales Vol. III
Cantus Gregorianus: Cantus Gregoriani Traditionales Vol. II
Ave Regina Caelorum: Marian Antiphon for Lent
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 0x1a2815fc2697fa339e5c16c21be655e047ad9ecdacd75698c9316e20b1c339bd. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USDHM1528948.
O Christ, Bright Sun of Justice: Lenten Lauds Hymn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba92296cc0ea3fd9b05416d82d9f2f01d86f3bee5b6a4a8baccf5d707b14f07. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USDHM1528945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd243127858f58ba4102bf0811f269b45a3b425b31cf3558f1cc82ff94f7ed9b4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDHM1528947.
With Great Longing: Lenten Antiphon with Verses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572249ba646dd4bb7d22b6d8d57c43e51cfa3b5aec404d36db5245b48178d818. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDHM1528946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6232acf5d5aab23161e7cd65981b01dbca179add537f4a5c9e079a98b817da63. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZP7F2579063.
Hosanna Filio David: Antiphon for Palm Sunday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cea7a01bff047519689fd43b8aaabeb2784f525012eb17521890b0e57223b7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:58:40Z), 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/USDHM1528949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ac16dcac131db0d56e10985c3f0a7420d519a113578adc720e1247e14b3c4e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDHM1528951.
Exultet (Opening) & Announcement of the Easter Alleluia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4e7045eae5e587d3155a0cbb223e5b5e12fa1da7b4ea4d6327b1e261fe3b93. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USDHM1528956.
This Day Is the Day: English Adaption of the Haec Dies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7308fb9f525585536364991cde8993bded93af3af08023aaa927fb98e24e24. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDHM1528961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2670bc19ba6a7cde5015c82f4f7d6804babcdfeb6f96ccd71ae7955892ca57de. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USDHM1528953.
Jubilate Deo: Offertory for the Fifth Sunday of Easter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8dc4d1ffb67b4ab0534851067fba3496ea3be514548218ed347ec0f5ead546. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDHM1528966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c00d6bc308b5b82e5533eed80fab73363a6ee5e96711e1a740a7eb3b7e0d83. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZP7F2579067.
Wailing Chorus from the Passion According to Mark and the Hymn "Great Silence"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c309902b165629085d7cfc9b2b8d3c796050c3bcf174f00f1d7967d63e56f95. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDHM1528955.
Nos Autem Gloriari Oportet: Introit for Holy Thursday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82a662bdbfed1a0735fc432965f5b2819049c38739e924af0907286c4d75539. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USDHM1528952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78c2a9e849ee12e33cf141c92186be23091bab44f83aeea69b492c8f7f64731. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZP7F2579070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5f03d0f625a5f18323e6799c125d8cedd0d3fd91a8bce4a7c2654a265a1c16. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDHM1528950.
Christus Factus Est: Gradual for Good Friday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b343441766e4a0127515566a56e5c7a4fa9943a90c5b84b3e06aba26d4023ba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USDHM1528954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5386a37c885b9f38826a3fcef65c00adca0b34f0712dd74e6c2a9f941f6846ee. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDHM1528959.
Victimae Pascali Laudes: Sequence for Easter Octave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6395f19ea9c0ec93cfed70cd9da725aa4df8ee1809211a322487eb01e7ff6e1a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:32Z), 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/USDHM1528958.