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 0x8f9ad7ed41beea2a244caa1e6a5bfc87904df751125a364ec2506420bb88571c. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54ef6d45-8c29-42da-83fd-0cc42ded9539.json and https://artists.proofprofile.net/proofs/artist/54ef6d45-8c29-42da-83fd-0cc42ded9539.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 0xc6bfc67cd8de75755ed77edc71fea947d0ce59bda458b00f55f3cb8aad8608d4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/KSA002500782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7ddb3f540b9cf7e8e46a09a798f89b6b6a91540c918c5e843ab91153137647. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KSA002500784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bfc67cd8de75755ed77edc71fea947d0ce59bda458b00f55f3cb8aad8608d4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:57Z), 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/KSA002500782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41da4d24d548fcc51b7ad252078e1a22df6eb6ebd235a8707e21fec2ecde2c0a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KSA002500785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1cf6db4653f2d5d2f82e5db2ef730842bcc6659dc9f57f880c26aa3a1ab6f6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KSA002500786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e930125d44b96b8baa6905e72f2f87e753aac48f894c5e657868224e63ed56. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:42Z), 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/KSA002500787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dc0a29b110d09eedfac294d35565e32b89c676ad38cc50a1ed5e986b03565c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:38Z), 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/KSA002500789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42246d1a17037a4bb300dccbbac721df668a42095b85c531d784665137e4e77d. 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/KSA002500790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0ae20c2c6b506224d79326da8b37a81578072cb55324ed023bfcdb31a88110. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/KSA002500792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76ad78a45a1e4ca820027e22c389ca9b32c0d6c6a2b89d1a2aada9483ea2cb0. 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/KRMIM2446209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e14d94f5fa956a9b1f1d4b77d9db97afb90a58507b3b5acaa9ead2a933c38. 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/QZF452002437.