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 0x8d44a0d5b3aa10f30e37794478ee2d74e973d2a24e60c6bbce331cd2c2cc68e2. 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/92b2aab7-0e14-420e-b829-835b68a8c68f.json and https://artists.proofprofile.net/proofs/artist/92b2aab7-0e14-420e-b829-835b68a8c68f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Victimae Paschali Laudes - Praise to the Paschal Victim
The Schola Cantorum of St. John XXIII Parish
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 0xf1943846a3f301ff2256ff104588c1b9d0a1005b6229bb81a42b127774089d11. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZP7F2422587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb94814232cc8d298772a76433bc5f280acb8507cc37291671c165cda24c543a. 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/QZP7F2422588.
Benedicamus Domino - Let Us Bless the Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3628969731e2b13ca9999df75ac996c98a95fe391c83a92926d08d6bbfd37e0a. 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/QZP7F2422589.
Puer Natus Est Nobis - A Child is Born to Us
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21a56e19aba1ca27c8631e5e86baf39bc94fd2deef08c5dc3b96a1c5693784. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZP7F2422590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52479fb1806e6309e9b62a58accbc440fefd10f7546ae7e7b8844d89218ccb69. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZP7F2422586.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Veni Creator Spiritus - Come, Creator Spirit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5913d6660813a74e924a7aaea6d08fd872a29d28165d00ce326fcc438ec7d96. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZP7F2422591.
Miserere Mei, Deus - Have Mercy on Me, O God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0ecde9dba6689d2858cad0f191d7b966cb61799e03673f8c228d9a9faefe5b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZP7F2422592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08045d6b3e1ebb0cb64a77380b6b39634d52930d731431d0a70161b8ee132d77. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZP7F2422593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317a442b148cc6d4e53f2b49903bfa82da49b8c3e734351e81aeae6e9532a56a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZP7F2422594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6d5f7a1d5803dffbcbde7b0ea5424152660f354d43d6ef0c4f1a06d8921fc5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZP7F2422595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc070e68424fe014603a6f968f0680a2d991600f2b3309718e18ad81fa2ad5a0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZP7F2422047.