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 0xa9d2f66b52a0cedc787e6450fa43da0f1d6fb6a543113284f0b78d476709796e. 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/6a471ca8-73b6-434d-b866-3219deddda8b.json and https://artists.proofprofile.net/proofs/artist/6a471ca8-73b6-434d-b866-3219deddda8b.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 0x8c4c3787d5a1caaff210a0711143b54256de5f39bc87ea7074c80969aada68da. 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/JPB452005459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a1dec0dc3cea1e26ae95294eb2a31350b489a444d4a0e43f2ac67cfa15dd66. 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/JPB451905336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cd988e3380ac7f9f04957defd880f480e1f9ad87e25ce72c1fdde48d413379. 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/JPB451905135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54efb4970777583cba56face5ed3f5e9c4e511531e4f177d91ae653afa25915. 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/JPB451905137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a91f445ab273124e811d161fa1b8a5eae5cdc61e6834c7fda367480bfba21a. 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/JPB451905138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482596d1f6d3a033428e5bb803c24edec9f88b9948d0438381a1835099ae61af. 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/JPB451905147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e26c2f1fa9d30c14a12709ff419c79c8c17ac9d2191fac2a1fdc7e280f7ff. 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/JPB451905139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe46863a0070447075ce55ec2ebbc63f71174105ec4179d07a454d355b156828. 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/JP92A2208182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4650201ff1829c4c4e13d6983cf973f6c0d1d19ebfcf3a4c030c8e1e9e3c80. 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/JP92A2207140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a1dec0dc3cea1e26ae95294eb2a31350b489a444d4a0e43f2ac67cfa15dd66. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPB451905336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bc11624406725b17bfd33a3913e28aa0def2cd1c730b1e81d1f2952d575077. 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/JPB451804767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27954b2463acd9079fd152d903d8644fd8bea07baf8b63a0bf6fcdcd6948c39f. 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/JPB451804769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd49e500e3964317e0fc26c4a9c8011bd85a24e0f385e985c7adb558083aa06. 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/JPB451804770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28f5d0c08a25edb74bb19af5a0ede11d5b6649b2cec66cb95596b5a452ba6a. 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/JPB451804771.