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 0x755128b0c9ebb745b2aaa5be1dea43dd340cdaa1c9bb65412d622ebe3e6b34a0. 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/029c9edb-b06c-4c80-95d8-c591bffb637b.json and https://artists.proofprofile.net/proofs/artist/029c9edb-b06c-4c80-95d8-c591bffb637b.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 0x56e09619c065d17c84c660b30895deacb784b2ae6f5304fa5f441fc12d52a35f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDY41631006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaab3614db67d618fc6a97b6c85aa183f7cfb6b235015daf05d8caca757277a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDY41631007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369897c0a9049a55f8f20b957c32e61713f0bd259120c236009d81f9a90a1a79. 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/USDY41631008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c36933a5db21dc92d14323c60564b8d8970903ca56ff5ba75074e474d0d4a28. 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/USDY41631010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193227c84f06d503739450ef71391db039b772602dec8439cdb1a430b8aaab51. 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/USDY41631011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e25d67010383ecb5a67677ad885957088327a87136c2525b4b2eadf050436e. 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/USDY41631012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4418706d9e1bddc20dba78b8e3879039432c439dc7f85af70f65b39fb3900ba. 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/QZTBC2378112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce440acd45c3fe65879bdf9ae369404b4eabff6c8f24b1d3f844e311524d0fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAW2378456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce440acd45c3fe65879bdf9ae369404b4eabff6c8f24b1d3f844e311524d0fa. 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/QZTAW2378456.
Simple Life / Weather Balloon (Just Another Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc980033581707038c0511da277a423964245b28e1685b713a8fead32c95ef7df. 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/QM7281970928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557f3012a62e36e4b6c594f287c2bfdb7a73b2c1a72efaeb790bc125379338db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH1975347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369897c0a9049a55f8f20b957c32e61713f0bd259120c236009d81f9a90a1a79. 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/USDY41631008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf183a42b40255912140b4d3300a9eca486855b9bf38d480651914fd593c8f017. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:23:39Z), 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/QM7281970931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b20a715d7f66024b19a354316f3ecb8eba4abd9c03cb6f53cc5b813949919a. 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/USHM91871416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557f3012a62e36e4b6c594f287c2bfdb7a73b2c1a72efaeb790bc125379338db. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/USCGH1975347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b20a715d7f66024b19a354316f3ecb8eba4abd9c03cb6f53cc5b813949919a. 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/USHM91871416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cb0218e3ee7e107ab4472758db8b0a98bc0a859381c8cf9c3cfe9cf85dcfa4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGJ1759946.