The Benedictine Nuns of St. Cecilia's Abbey
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 0x7db1c2ed2bd0b6320cbf5c1fce81b738422f18a447c7b0a8b571643e6e03e25d. 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/6f18e9a8-1277-4296-83d0-fa49a29d452c.json and https://artists.proofprofile.net/proofs/artist/6f18e9a8-1277-4296-83d0-fa49a29d452c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x9c01a20161e0f41073c91fa31e06554778a4d37a9f5f840a89bed93bb5d7562a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM6P41496283.
Gregorian Chant Gaudete (A Selection from the Liturgical Year)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0bfe044a3ac083979af646fb6a29de5405d4fe26b93631c43c84b82c5dc430. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6N21598406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf53faba8c5ee81af4cf8e3adb9f61685211bbd704547ece05b16aeeb803cd2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM6N21598407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d079932646f43ac8c18be768684d352ca5a3dd794f715cd4eb7150de42a3b. 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/QM6N21598408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef06663503888f8625b8c0840a96ae1810594ec9f5128e51a8bd6b9c7a729e5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:19Z), 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/QM6N21598409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e73bd6a3c07fdfdac17d81ba1385306b97313453f72b83f933d21e006615e46. 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/QM6N21598410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f73540b47c6a0395e02b75144fe8b93cc0642ad36a590e7cc0c534561cc071. 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/QM6N21598411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4d93770b8053e75d7a6c8adf6387825a2fbae9711e23050fde33ac2183e28. 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/QM6N21598412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadee7d601ab6e33377487e20ddfcc86aaf2b924957edee18f65a7af3c8b59cd2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N21598413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe396ee85118b5c0da200c62bf2ed187c642c0c706b11fe1b68bdfa0396d99cbf. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM6N21598414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4869ad6a075cab0615124f049cb448fe34293391d59a843fa00d069bb1e251. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6N21598415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef95c922100bfe78d05ede9cbcde1c7bd18a29f0cdcf9e48f24a9cb8e40d2fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6N21598417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd698901ef37f7655d43b96e9a587440198085e1e6bb2284defc9edd912c505d0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6N21598418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c10ac3d6cf85e664a3ce4e073e94f30690332eceb54d75aa7c9217a0300bd2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QM6N21598419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44de86830d86a0065fab3d1307cb8dd5bd6482b8cf355cd97808c1203c9cd8d2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:41Z), 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/QM6N21598420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1a85c36ce71173995c556c8736f4f40c40ca2117f841a05cb7ff25bbde92ea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6N21598421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a13c786bba810c707a26c8492c2c56acbbb6db43baa89932a85db62c77429d2. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QM6N21598423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7601261cd4849a028021f80ea2bc26d655e770a606ec54d4704784e700404c68. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6N21598424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d167531efad388f3aedb71870df08ef49a888bbd33877e6c9196915537551. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N21598425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23739c86d090ec231c1cca9fede53058b66c68fc269c2ef9c90f538049628d27. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:51Z), 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/QM6N21598426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4734456b710d285a4501a06c62b2c995c3f48ce741fa1a66731ff8ab5bce4931. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM6N21598427.