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 0x9bce418d361e33003d353abc10255fb66cfc4328e95e4b06de96ed883d7dad2a. 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/d40f2f64-4613-452a-94d9-dc894034e9a0.json and https://artists.proofprofile.net/proofs/artist/d40f2f64-4613-452a-94d9-dc894034e9a0.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 0xcc82906d7be25449b2f4c7d3bd58ffd147c3fc522693627e926780a2f30bce95. 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/USWL12201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e3a30982e3d6ec5adddb45a2c768511b950fb85edc3e4cb3f5b02f555c2cb9. 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/USWL12201321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166aa27d9bd7e592253eb134fd4d0ebd899eec52e7422a9adc73d6d6aff6df4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USWL12300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b8779a4db0223ceccf78ed3b0e536970553abf9b7c5c9bba79d4271fed88ce. 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/USWL12300814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166aa27d9bd7e592253eb134fd4d0ebd899eec52e7422a9adc73d6d6aff6df4. 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/USWL12300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aca388bb2ee919272685d1a2fa2b3e1f04b228969c9dad0e8929b266be47ad. 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/USWL12302231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70c491c6b86b2edf761a895ec36e1d62d4cbad4548ec8004197cb91ea654d7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3af68eece0d8690f05690fec41db77a43f1d2e2aa24be21b828881b30a158b6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12401933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d234dc23f3b6765123cb1924b10c99df63be666d5af08fd6c9427b4f07659e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN32248073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b8779a4db0223ceccf78ed3b0e536970553abf9b7c5c9bba79d4271fed88ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWL12300814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e47a2f7ef56bc5b5464552e8d87a6f6ff0f42a296d5109abb36104180b9fd3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12401756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aca388bb2ee919272685d1a2fa2b3e1f04b228969c9dad0e8929b266be47ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWL12302231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00404f591c5277b72e53a8d24fe7ecbe09958cb732c2597678e640311fce4ad0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12302765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e3a30982e3d6ec5adddb45a2c768511b950fb85edc3e4cb3f5b02f555c2cb9. 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/USWL12201321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166aa27d9bd7e592253eb134fd4d0ebd899eec52e7422a9adc73d6d6aff6df4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db6d6080ed4b15ea2360fc05e3b179063dec73d362548352dc43d49bb93de87. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL12401934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc82906d7be25449b2f4c7d3bd58ffd147c3fc522693627e926780a2f30bce95. 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/USWL12201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa71c9b5e1d8456b57a1d037e3b326212304348158d217db5965362686607aa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL12401935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d83fae1456fcbc911706d77c5736b148c46e0a16af71dd6c959dd617ae60982. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWL12402761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d83fae1456fcbc911706d77c5736b148c46e0a16af71dd6c959dd617ae60982. 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/USWL12402761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91636e1d26a648e9d6ef46188f8ba2ab84caf7507b4a2dc610e16b5ebb8b2fc7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USWL12403977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d4b40586e25b96e9c366e08fbbe0ed1f7603b3e264a77d7a3349b7532007ca. 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/USWL12500941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a31c8b4266a419bce3d185700b4c35b6d0205e852447814d5606e103a734f4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USWL12501126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70c491c6b86b2edf761a895ec36e1d62d4cbad4548ec8004197cb91ea654d7f. 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/USWL12400254.