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 0xf03387ec37384c8f39ee9f1168f44bf19811eb66fce8221628522a7a54efddc2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5add0b5d-b07f-42df-bdc1-723700333e93.json and https://artists.proofprofile.net/proofs/artist/5add0b5d-b07f-42df-bdc1-723700333e93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miraculous: Ladybug & Cat Noir, Der Film - Original Score
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 0x0388c97b2764d56826d85249648a551512e0a64437b68e9622ac184f328ad401. 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/FR1F92301380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b50c56d546b752d534eb2fcd0c97d4a85cbc25e76fff204ab39b55d77be4960. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR1F92301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8cc910f8e3ed230273ca0f0e485d870b525683451bb509b23c9c4099ed44c5. 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/FR1F92301400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260f6d3a72adf15b8c34244e811402d6059e11caaccf3d0c7f62de8c786d6ddb. 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/FR1F92301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89614c333851ec528cda9402e3141f6dc09292621c893b29bcb2110a4731e89. 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/FR1F92301430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c5cadee4d929160c67985a54a845aae0875ba0fd184bd5d844ab172c4c2801. 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/FR1F92301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4984696b56b5ff4ee5ebbeb8db1d63fb1db22b56b3e31aef5e8a406eff509fe6. 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/FR1F92301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f42ad0962013a033de18b37bcb8d7e1fa382b70e1e71eb4353e25de4562656. 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/FR1F92301520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb23fc8146af4d31bb3574c07538bb9ddbc15e14d2d49ca9598fd26c953de0e8. 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/FR1F92301310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b8666bf19f2a74721e03ca2bee275474d25b4e4183efa6239e64d2d2b712e6. 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/FR1F92301540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2096aedad734c89333feb6a633e6b5bd532d0cd93013c7785e307d742a829978. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR1F92301340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e581a22bb5637e11412057aef48fc5be2a9fd8bc3266246f467a9310e3880. 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/FR1F92301580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863bc35da8cbcfbe4d1abe000c8242816fd5df2c1a93e7ede0c4eed83a9343b3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR1F92301320.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9032f93f29844719484415b1abb0de8be6ab3dcea7935b4abcfe80c23a8a7129. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FR1F92301370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e66a9fb7386056ae8fa0a324d746fbe3fcecc06245c353d7d7f81895b68b64. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/FR1F92301390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e1c260a5b998689b9810f97cd980ab82cee00fc8d19c6b7ee3121e7d0f3f45. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR1F92301420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96538f9e1b67fe9075318a8bfdaf676fd151dcff1e4e90a5a4a889be936e1928. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR1F92301440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70018f940c7df7bb8e8ef305eec06457ab41cee02c509f7dff31f6ed14f4320. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR1F92301460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46928b202e5519a0d27c546ba808b6fb023bd99155207db50e86e67586d5fe7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR1F92301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c3944ae8ba3325f36562eb6232e4dc68f7bc6b834202f9c999a201a80d10af. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR1F92301490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef02bc888a3104cf2cca55bb00b8175d89d3596054bdd8d40a70b69afe7ddf2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR1F92301500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45922ac642267df813e2347c8d1c7ce426b4993268c077a43af493cea9f293d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR1F92301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331e6a4a4ff2ed627f82ed33f336b1ab8ef8c11b232dc44deccfb73f404ef053. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR1F92301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024412852d559c9f25470571476373f354a51f0a7350c9deae5b70505a0af685. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR1F92301530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc467c082760d568ccbfbd272dc41dbcbe95a319f9aafbb9e73e59f7d3784204. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/FR1F92301550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5439eb94cd6ae416224636c1e447da35b8a141cc3439334de6c20866417757d5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR1F92301330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d626904efbf1b206ca8fff9c3e9cfe9a8842d965bd3ec52ccbb1b3f16a359c5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR1F92301560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a40a9695e9badd6e44f9fb7e86b3b2f66308bae83e5d62ff9926a33ccc6326. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR1F92301570.