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 0xf0f8eb3bf6467a0551797b0a73a09b55f93170f512a3b88446f1f335d8fe11a7. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c77fc4d8-d635-4462-af2d-bb159a08aa24.json and https://artists.proofprofile.net/proofs/artist/c77fc4d8-d635-4462-af2d-bb159a08aa24.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 0x1d0185ea660acb6609e821ffc2e91b6a5c5e01252c673a4aa66bdf1dde191881. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:38:56Z), 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/ES7890500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc10599ad279bb19310f5cf91e12ac3fbacdf83268c8e9f3865e6dcc24fbe1d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:07:01Z), 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/ES7890500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb75f53dbd870ca449396b3a287ed59023771536fc5215af470faa6e5070f304. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES7890500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe209d99b7afdb9b2db2d3ce57a03feffc41513672928266a1edfdea05c78427. 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/ES7890500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63634c1c513c464327e94b0a7b885a8fdbbfd2dcfc9fb79e9cce7da8ab9e0819. 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/ES7890500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d47631184baf259494e9036af2a5ad5f215d592f0a8f7b52ba0b4fcf96dff. 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/ES7890500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17059ea9f6e6d13894f619dcc2b80b3d9f82954801ea6e04bad1885a27de29. 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/ES7890500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe53e381426f883fec4a0be87d65daf90cb1e0e1b7269ad45596a0587bb34749. 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/ES7890500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c5bfa506b8a5a58636f8697b92891892a49f6a1691ab159b4b1d41e9c32ad6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES7890500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06b8389ae197a28884bf957b54246bcd29c88207fc70dde632c05f380c52eb5. 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/ES7890500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe79b238478e57a8d212abd24df92c1c67a627d111318fcef5021333b10251e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ES7890500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999755cb3719b00644514b06ca840eef9990e163e09f786a17985ee754575d69. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ES7890500236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bcdbccf21a48d1f3ac2c5cc40d544d0792b310a4b2b985e5c916f970ea16c1. 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/ES7890500216.
Posuerunt super caput eius - Benedictus Deus Dominus Israel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4803804d28178cded952e7761e243e8283409dadcaee356a2ae6459c7a0423b7. 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/ES7890500237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f293cb0517310785585db2164fecc548098b4cad1ab92c7f16e6b102ac9880. 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/ES7890500221.
Primus et sextus (Modos I-II-III-IV-V-VI-VII-VIII) [La Enseñanza de los Tonos]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d9366b4a6c031cd2bb9677ff0904ade704659b258f0eee1c0cb1ee4b09a7d8. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:16:14Z), 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/ES7731408021.
Laudans canto Deo meo (Modos I-II-III-IV-V-VI-VII-VIII) [El Aprendizaje de los Intervalos]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec76fd97236152737a3cf79701809494f55fe03d3eb48a7a4dab1d7a922a54. 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/ES7731408028.
Hac puer arte (Modo I) [El Aprendizaje de las Mutanzas]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb71aaaa2403f767d66d1cc703130fedf8cb9b03dae3720549e87ab47cf0751. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ES7731408032.
Plagalis tonus iste (Modo II) [Las Sonoridades de los Modos]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce56820ada160e6728dac867cc483c8853388a2155a0dbe2edc4837444f55c8. 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/ES7731408038.
Deuterus auctentum (Modo III) [Las Sonoridades de los Modos]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74139c009df0b6f96317a8e5c5177507fd7d3fde5e70dc1f43ddbf7d8e23ff5a. 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/ES7731408039.
Pneuma, el Poder Espiritual de la Música Antigua (Pneuma, Spiritual Power of Early Music)
CSM 142 La Garza Del Rio Henares (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a048df9ba9a0d5a9108c953672883e1f0843e5f5b5b18b79bfe26845ceb62f8. 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/ES7730008416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c435563562585b9bcf9aaa17159170c32e176d5dd45e81a05bc65ab19723dbf. 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/ES7739408016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3197388c9bc8f5d054cd944f22c888616ce9675c0acab6a385d1f0c2042d3d60. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ES7739908302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9ee55c9db8c431f93fec3447f0f6ecac3130a3d6af60a18093d1413ba8d805. 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/ES7730108295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f838fe1f626c6185ef78d9a7069134d6a0c435beff8f6061b8f1142fac1f5f7. 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/ES7730308471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7674c32708c6f11e3b7fe024d599d7a67fe3aaf59fcdcc1a5f74386df3db4d5. 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/ES7730208625.
Tomás Luis de Victoria: Officium Hebdomadae Sanctae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d47631184baf259494e9036af2a5ad5f215d592f0a8f7b52ba0b4fcf96dff. 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/ES7890500206.