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 0xe3a0e83c36498cf389b8d81e389ecff3bc40bf7d3464d1592b60ae19310091a4. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d953f89-80b7-4980-af56-fc913f0cc509.json and https://artists.proofprofile.net/proofs/artist/0d953f89-80b7-4980-af56-fc913f0cc509.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 0x783a9f7bc57146d83b32ec2d3b11ddc44110c5caf32605aafc15df93dd151e41. 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/GB4DA2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3349642b0f5c11f6710e2f9b4c4a8a093902ac45e0c33d20ce3c119bb78dfc. 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/GB4DA2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8733329bcf25bf35172862eed03ae4272b6dc1178cf3915dab5163b92e386a. 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/GB4DA2300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56dbdd334d340b2023bfd74c6337362130c8da7426b0186b3a0bb48d39c7031. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:48:12Z), 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/GB4DA2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9561886e4ff2522d12559a6404d11bf57912a2561fa95c82b2bc4fbe49f567f1. 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/GB4DA2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a67998852a1bb5656fb34672bf65705b3506360dd671e3a8daf7a3f16e59772. 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/GB4DA2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedad8f37f5e8b641670dc455212a0937497008cf41568a052c29e35d379ed14b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GB4DA2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb9b9c290aba526e428de8ca91f7159e60a45f1ffd1de2cac64aafde5038ef2. 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/GB4DA2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64ad80aa8f7200e1b034339810c4d3490be9c146f3e9235112175f1f47bcb1. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GB4DA2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ac14c57ead6caa2316fe633b58d39587b0f9505b55303be885a79396bff5a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GB4DA2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e76b27982e97545ae844e065f05d055e61c45f0024bd5b1689c8d68a9e719f1. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GB4DA2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a67998852a1bb5656fb34672bf65705b3506360dd671e3a8daf7a3f16e59772. 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/GB4DA2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3349642b0f5c11f6710e2f9b4c4a8a093902ac45e0c33d20ce3c119bb78dfc. 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/GB4DA2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f4f337b36b585b7371f55283b1c97c17b0caa934f545d750912e92d2f8c069. 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/QZK6K2054185.