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 0xad38172e176fb357fdf79a6cb7ae194e79ee51f33f402f63ec61467bc2d37ce6. 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/b906ba45-1bfa-466c-8ad3-647094063501.json and https://artists.proofprofile.net/proofs/artist/b906ba45-1bfa-466c-8ad3-647094063501.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Twinkle Starlight/Worlds Pain (Anime 'planetarian -Chiisa na Hoshi no Yume-' ED & Image Song)
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 0x2e97e3c2c2c3b8cc83b31ecaf1beab9331111b7b2916728a8c59ea337c0fe5d9. 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/JPE451800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f4bfb6e6fe48a3181e39f32be7b399a85aa74f9b1451ed7d9c58d619b8d97. 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/JPE451800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8e64c5fbfe3a7fce3081688f826ccdf36c60b668fcd4a2a56e4b9a66ad952c. 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/JPE451800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3419299b9c93c189895a851e3eb474cc1f3909aadb0fc9b94de901bd6d798c. 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/JPE451800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76880400b91104ed8a6085b7fecd8e796be512b9af64d159f3d9927f641493. 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/JPE451800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b29d975764939e82ea216f1f1cbbd6bbc7a7d8b627498a1e8cda89b797422. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPE451800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5c602253659e17f5b9416ea4eefe760411caf05eed24e1f6d3babfdc632dfd. 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/JPE451800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e876432ea2c89231a944490955a0683982f59df2e1f1fc618ca768a6a78277d. 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/JPE451800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d2bcad1691308719bb3e7706ac33ca29fc8914141d62781ed1922f51cde4a0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPE451800034.
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 0xdf84515d28e8f372ba28392a7d469a70b54575cbbae28809403ae94e76b052a3. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/JPE451800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b79c43c8bc4872dfb3d58fa52e63cba7eaa88313a287744e0dc32ad5913c16. 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/JPE451800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dacca0166fd8a11ec850dbcbefca4cdfb20706f82450f17fe8b56b54dcce803. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPE451800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7144b1a10da810930086b9f372f030fbfabc4918ea70502c042ab899d341ea87. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPE451800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0a901e9cc7e21be3161a15d55522511caf86815c842af8551b9281c7bc3e69. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPE451800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547347c776a1432086036e57e87087da8510df777064c98dc4aaabafc24991c7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPE451800044.