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 0x72e8d95358ed8fa51b9af0cd8303278bb049a31c21c12cc480fcf406e62412e7. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/781bcdee-18b6-4613-b4c5-bd2bdac5fef6.json and https://artists.proofprofile.net/proofs/artist/781bcdee-18b6-4613-b4c5-bd2bdac5fef6.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 0xa6693ecca1656c140720d6f8e0b920119826b716dc9f28b730676395c921f426. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADT1885572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e41be476f55d717102b4f22f2be06b0b13cd4d2dbcb18c353f1dd43dc8b6437. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/TCADU1833645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757441e43d3b79cde3a1e4cfc1050e9eb4a3fb75f54c7bb6098d50ccd3ca359d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCADU1833646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6693ecca1656c140720d6f8e0b920119826b716dc9f28b730676395c921f426. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADT1885572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e13fbcb31519cad1345528f67903588f2b8495cf58289663ce852735ab32b80. 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/TCADU1833652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4c5e94a9355c5912024c6f55ab4aee4b703f694379588fa412012c67b99c1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCADU1833654.
Hand of God (Live from Forward Conference)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad00aea9d60f1f60c2e429f7d4ae8beed43fb5c34282bfd748274a89f388e4. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAEN1940560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba4105e5ca8fcf314d5ae1c52aecc63e99463e4796b93cb3afe037015356693. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCAFO2169196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2196827ad436cadd6cd32b54584127da1d4b23819e0f5c5458e2ba2cb93e08c9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAFO2197962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d815563b9a07f3856e5f8004f67d1f776a220d3f781b9ef852061812163df20. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:24:00Z), 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/TCAFO2197167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350e551cba06073b54ba060635be4fb88d1e61a02f1b67ef3f0a90204b37021. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAGF2292465.