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 0xcbad5fddb9a81865d2ad753fa7c417001bd1282c606b379b5baf8e97e8de842f. 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/700a81a9-1409-4d66-84bc-01ac7c8ddf05.json and https://artists.proofprofile.net/proofs/artist/700a81a9-1409-4d66-84bc-01ac7c8ddf05.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 0x89a8daa54f2b48bd0fe978d8a69612674850c08f465f10b6f6a4566566d3b17a. 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/US74R0592504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c04e9eb48092b3a2133832e475b9d701dcea5d9fc83b4adba86fc38bfed4b72. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US74R0592507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0f39217809276f908ab098c08787b4b45586d956451c6cbcec17c336c9034a. 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/US74R0592508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33726e4e829fe37b69609b827eff867ea23a815efc2a61a8ea3e9150e22b586. 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/US74R0592510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60385989c5c7b82d44725470b9b8f84135422a655e506ec8c0a1f5db557922f. 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/US74R0592511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58edeaf2ccb0a2190dd7caf79f9cfaf35970dbd2d89ca9b31e70067bac5957f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/US74R0592512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807d478db1c733ff404ff56df1db4a261f8c079bb19756069fd3d57a473d46a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US74R0592505.
Te Ha Hon Ta Na Ken Ne Ha - from Now Our Minds Are One
Spirit Walk (Natural Rhythms for Inspired Walking and Workouts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf41b37dab4c8c0617dea35d35e03ee4864fc358e0c7d94dc9ec363de0c82fda. 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/US74R1295211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d4bbe8c57d12b4d6232ce2fcdd5b7ddefb1ed098daf1a7f589a38daff77c25. 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/US74R0592501.
Prophecy: A Hearts of Space Native American Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254fdc093101af4488fd7eeac1ff76c46d5d0a959f3797db527ee05ea38aa5e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAKS0501573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee2d4e88adf0155afb058e2e402cc2bdeddbf3946d601ee615f91ee3dd248a6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US74R0591802.
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