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 0xe3fe3cd3e40c797b757e63e63d54308a03684e0585ec20e420c1673e82ff5745. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f5331eb-454b-4115-8997-7f37c60834aa.json and https://artists.proofprofile.net/proofs/artist/7f5331eb-454b-4115-8997-7f37c60834aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Agnus Dei (Arranged by Julian Mendelsohn)
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 0x3669683399b9a3534cd4242fe6a4df0ee0f627976de1a786231fe80ceabe0c31. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:32:05Z), 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/USA561388960.
Attende Domine (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02b613f8e2d6d6d5de9db9a70345a87720ec486cbd73b68c54dc480315b1551. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA561388961.
Veni Sancte Spiritus (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50d278f29336eff08b8b981507eb8c048ae58c1ce4eb17f2b997cad11ae3fe6. 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/USA561388962.
Adoro Te Devote (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd838bf0e690925f32b883c711ee32096a26359b5982bb2ff51d33e28b9dd9d2f. 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/USA561388963.
Ave Verum Corpus (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2ad2832d95965940e53f4ef048bfcc3a2a9e22c3eeeef7f71bab15a3ef9725. 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/USA561388964.
Pange Lingua (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b5572f2f7b3279cd90c8cc4b6f82c054d32962c86d4dab32a910979aeddca0. 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/USA561388965.
O Fillii Et Filliae (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268f204d4bd707a14dd9c9e38d2661a1c23eb58c44f4d904a1f79465b91f1304. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA561388966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fad9bd7178dfc55112471e52973f23a5149f82afd02827964ee15ea6d64488. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA561388967.
Offertory (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621cf41db8b833c4981087a7cda85c3fcb6e708ccf32d88691394aa6535c6ccc. 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/USA561388968.
Puer Natus (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51e3868a47a8b18e3a140429376f272f89b1ee7d6317caf1a66147a2d91c770. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USA561388969.
Ave Maria (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5856f255f5a43b3a9782b763a84c80e86f541ec14aed749e5d614ce3a6e0c73b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA561388970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ece80d2f228d1a6e8ae4ebca76d2893a0acf3e2be362663d16d1c44b6d6df. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USA561388971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d33d528cc324e765fda629569d9436a32d72c7b9ac709729e06c081754196eb. 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/USA561388972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79d219c521931e67e352c5905962c89c368214b62bd4a7aefc3033aa4dfcd8d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA561388973.
Salve Regina (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26501b9f12e560d83ffa2f2abf65d1589eb1973a298b60d8a852018f8005f94a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA561388974.
Gloria In Excelsis (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244f4885bf293869503ced6e4137a7ac507dc8b101a8289a1b979e1f947c9491. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA561388975.
Jesu Dulcis Memoria (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563a3644cec99cd6e7abd311a6cde3fae1fe2938cc03949984a3f72ffba9fd40. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA561388976.
Angelus ad Virginem (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761278b86447b3c9d7700952a03adcdcace5486a7fdddabeb24fd72d113c3ca5. 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/USA561388978.
Locus Iste (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf913d686e6d7acff366fc504c15f8a64d30c4b59d5a16f1c3fa6594e2b97f489. 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/USA561388979.
O Quam Gloriosum (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7326e0280ac1d1a735f3437de7c2da0e588a47b0a8c96a75234c9b71e5f42cd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:38Z), 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/USA561388980.
The Lords Prayer (Arranged by Julian Mendelsohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2880539ba1e3d38f69fe1cdfbf57993037183c652f35e452381d76ea11a2571. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA561388981.
Introducing the Brotherhood of St. Gregory and the Sisters of Mercy Choir
Gregorian Chants for Compassion Healing and Hope
Gregorian Chants for Mind Sharpness and Harmony