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 0xed1c13c162de7e04cc1a940b336a4d671c11de199049d19c80f33182f74f2544. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d85a4a2a-3e7b-4aaf-813e-2275f129acf3.json and https://artists.proofprofile.net/proofs/artist/d85a4a2a-3e7b-4aaf-813e-2275f129acf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ch. I: The Gregorian Chapter (Catholic Chapters, I-IV)
Gloria (Mass Parts, Missa de Angelis, VIII)
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 0x9fc450f0c874e921468fe32d5ad513ff9cc460fdabb13d289eb5df06d87ad850. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:13Z), 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/QZHN82156224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755be3c03b45fa602ede8c89bee0900ec4aac73e9c85f98d49388f507003801a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:41Z), 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/QZHN82156225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67835f99f04feaad60e27c64e088dd08ffaf6de9bba5f958be807daf167fabfd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN82156226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902e46735678c684deed1009a908a37824c2e07c5ef9b5663c2230c9f0987426. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN82156227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42011f952ca208f5ebdc758df0c475f5f62a0e846b58244d59078c7fa7a5432. 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/QZHN82156228.
Kyrie (Mass Parts, Missa de Angelis, VIII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fd5a70436b20f28265574fb4e96a1b376924f6e5d6280a31f9d15f598b606b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:42Z), 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/QZHN82156229.
Sanctus (Mass Parts, Missa de Angelis, VIII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63d151524e1bba08123ced067a29d3870b32a29ab9f5ac887dbaa97e020baa9. 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/QZHN82156230.
Agnus Dei (Mass Parts, Missa de Angelis, VIII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026fab900b15708f360b08d02981f98cc9d32275b6528ca7ef3a398c1b8e0301. 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/QZHN82156231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c843b698bdd357babe7ab849c92ced9e5eafe72be26ebb04b47958e2ea6ebd. 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/QZHN82156233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e1022d12a03156c402342372b79d5840f42f6b8efcbcba47449e3346aa82c7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN82156234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900e84ff2bee25c511af7b18c35a779090e2ddbb50b4d5feefd553b8d7a261d1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN82156235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029c49c7cae1cc6e51e404d75765a77f385f2a2fab2916db5ead223399580ac8. 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/QZHN82156236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04440540506cf8554ea5cc7c95b23129e707c8d7abae4023b9831964a0dcee1. 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/QZHN82156237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c6918030af447a1a80ca59a08bf3bf4b4b7bf6774b805cd7e65442e3dfe223. 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/QZHN82156238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa62840e60277cae4028b50f1cc2d6b9591e794867cecff9a9a46fc23132549a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN82156239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc30144a9c8609fe3335a05f67393e21898b1f466e4e19cb113bcf87c94ac37. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN82156240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb19a954e874d23d7d4b98feb0a48dcdc439c088fdaf2455fde56935761af203. 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/QZHN82156241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe68ea8daa3cb2e7930a08dcaf370ef8569a2139f5d677690d36055c925f8275. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN82156242.
Ch. II: The Hymns Chapter (Catholic Chapters, I-IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f73e14cda4a8041ac32a362aaf76d8c48994f4975ce5f8e9350a8e072ab58a8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLR2155521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c0bb3397b2e16ac674183e3702737d00a05d0b315a6feea4f30f9eecff061c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPLR2155522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75059689518df08d6a2e88b2d1c6fcb62ac3668d9c5092678f9173bf95b3e88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPLR2155523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68722a7d2ae87e299c526c33e51e4613be0f3354eb51b7fe085a1a7c84cb7bd4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPLR2155524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1150af0aa7da2501689dcc0fa137096e6f545ac85722fef680e0d06eb1576600. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPLR2155525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70b51b210eeb7f9aabd7d75b0dc8ed0abafc2c1e0a719bf938aeecf3ae69df. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZPLR2155529.
Ch. III: The Songs Chapter (Catholic Chapters, I-IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1359c20fe62794bbffc4c00518d0489c32cfb76e2469baeb3384aa4134ac9b7c. 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/QZNWX2264600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2752d9cc1a45b3418716f268926d1b67e4f9c27c195ceef40c7d008a330cab3c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWX2264605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a83d3b32cd44c3f339c43c45332698b65660bd3972b476c79e54abde14f4e4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZDA52464667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a1430a5d9fe7ff92fd2dda0ac735dafa559f6d3abb4318d9a1fd0da70dc97. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZFZ22522813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb141542b944186711783cfd1c94f50f59d8c545f22ae8dc032e728d90de5485b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEQ2528642.