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 0x50bcc0cf4a9592ec3010256f2db56911d66ae390d888d86bf33f304f6d9fc749. 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/04d6039d-2310-421a-ad1f-9f62998abfbc.json and https://artists.proofprofile.net/proofs/artist/04d6039d-2310-421a-ad1f-9f62998abfbc.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 0x8ab66f736b50d00d78cf8d4444ed48f68eebfb80c6c79840f758f19d6e6b81db. 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/DGA072479683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2938003ec8095c1e263b9bae49a1c5ef8066cebab9ceb5c69395daf80e304d. 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/US3DF2484940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce65e2592b4b78c08b6532de031eec5c2b32f307b8a61edd3ff5635b8ff77297. 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/DGA052496526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2691bdfdb3f5786a3cfba93d8780f6d28cb29e77c6f551323e7d2f4a216c0f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872448282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1794a7da15445fb5228eb54643714b165b0c5eb8f975a56ad92b9e1a8c9e88. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR2X42482550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62433eb44db3e0388375816d52971f5e7636ff192372de8d05ea7def76389817. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S2480506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea71b5c44f0641ea7b9716538ad8d6a59b7de06e653fd3703c914fe5ff766774. 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/DEZC62364428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5196ce16b9db2c4c68082bceb8973d79883985c6f99b02cd3445221c077e6ad. 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/QM3DF2296715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b34d41b1eba25d7ffdb8234c13c789cb91c37092d48783f4821a0a9bd7df42c. 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/DEZC62361456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc8be61b2b67f0e560a2c8ef80e863aa63e6df6fc6c6801f8c2db785d3fcf9. 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/DEZC62332497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351570b7687d6c535352b522ca3a9d1516dccce37bd07187138f7fd11b15d43c. 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/USANG2268529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1a135b44b1b2d07a915dae4fd9a9a885c48d9abc8adaa398b79ab51c0147e2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZC62320057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a0bc2d0f2e71efd47bab0d655db66feba7a188f7ce0900e21cb7edf75eb6e. 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/DEZC62201503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94487760e22ca355413645e5315ff35cf5728f03ee1c6eb37f9da3c4184325. 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/DEZC62295556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ade7585249e7d19ec306d815b180eee0dc213302f7b4f3a92d5a016f896ace. 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/DEZC62291244.