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 0x40ef739053abff3a64d1294aa376a3850a2cf5d73c1b0fc232cabb4e612d7ef2. 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/15f91966-c03b-43c1-a05e-755a75de41dd.json and https://artists.proofprofile.net/proofs/artist/15f91966-c03b-43c1-a05e-755a75de41dd.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 0x990fbe18af9ef312b9beb21effa60d5a3a65da1e3d25c9c50bb5d45a67d2690a. 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/QZK6M2209390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80cabd676a594cf1f2102c3c2136fc35cc4f45e9ad0259e66c2a596edda3b5d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:42Z), 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/QZMEM2261534.
laelaps and the teumessian fox (deluxe edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd8f0d8dd4bafa31d80a229bb59bad6bf20d4d1a2868e21bd83dada585efff2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUH2W2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bb6a10d91c2d3a5dc921ce26d5c274b9b3b91893c6819041aef62db3754726. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/AUH2W2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd46754693680ef1b5d032b16d16847328806dd0da3435b606b2e514e540747c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T13:00:28Z), 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/AUMEV2512209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd46754693680ef1b5d032b16d16847328806dd0da3435b606b2e514e540747c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUMEV2512209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623ef513ca8991d3e6481b5f46ab5494e61c1d5fe298abe7326740736ee833a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:51Z), 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/AUMEV2537465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c532518714ac5353de4cb8307dd11b011cfcae765d0c53738286de8d2e1e4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2539829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2d36723b2c580cea7c082f720ec81574cb53d7fbe890b0c0df1558c7357ae8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUMEV2590213.