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 0x1eaf2ae95345bf69124665ee83d13feafdb634fca0de5c738213a1e60305a004. 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/8e6eb210-8c2b-4c2b-877d-5fde9e9af6ed.json and https://artists.proofprofile.net/proofs/artist/8e6eb210-8c2b-4c2b-877d-5fde9e9af6ed.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 0x3f5a81c86f5f746d1f9498d1ae458042364e13d1a7cf1f8b77a5c1b0fa2ce296. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92E2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60cd390369b731921341e51f2080dee56b267a535d8755b740e630ac9d3e4ee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JP92E2500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8906349fe9fffec40aec8c83a12153bf9fd38e4ba1169f259dd697d9e9f25795. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:25Z), 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/JP92E2500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51beed2cc4f91d9a0f35efd7f50025fb6631dbcaf061ff5f976cb1aa1716b8ff. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JP92E2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5a81c86f5f746d1f9498d1ae458042364e13d1a7cf1f8b77a5c1b0fa2ce296. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JP92E2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6077f95e1b36c7f0872522cea1c99da5baf0c12d9e969f844406422c8879fa. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:15:42Z), 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/JP92E2500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7944d9b430bcc252d0f97bd2bfe01785f0bcd833ffaa8b69ded3fd55e20f4ded. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JP92E2500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb901afbd6f228902083be009ed9eaa1ab520f1c17364dc276917bbf7993762c8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JP92E2500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7944d9b430bcc252d0f97bd2bfe01785f0bcd833ffaa8b69ded3fd55e20f4ded. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JP92E2500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985844155124d9cf5948f33ae911fa518fb30bd5db22117449f8894fd73703a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JP92E2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f0fcbe798cbf8a25749008fcac5866d6966f03577a2e798db1dc6a5bd7106. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:27:04Z), 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/JP92E2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985844155124d9cf5948f33ae911fa518fb30bd5db22117449f8894fd73703a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JP92E2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a4fcdca36c2cc7030363092fcf6cca9a23d6241c3d0cec8c1b3238ab144486. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JP92E2500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f0fcbe798cbf8a25749008fcac5866d6966f03577a2e798db1dc6a5bd7106. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JP92E2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee3e558b4c03adb26f248a88b69f0601c2c327c693856129d18c81054ddefec. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92E2500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dae4f6e40fa7bb75b4467155e4d34d023f4bb12d99cdff667ec25dffc0b10df. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JP92E2500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3265eff664868b3e6e560f6e29a5341a4dd780ef2dc5e213624db12d9e378d87. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:35Z), 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/JP92E2500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985844155124d9cf5948f33ae911fa518fb30bd5db22117449f8894fd73703a5. 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/JP92E2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985844155124d9cf5948f33ae911fa518fb30bd5db22117449f8894fd73703a5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JP92E2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd6a22d0b4d88d9d7d45ecc0bcbc7480deb5cb2926a936db05bc622a2d4dac1. 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/JPR502504193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aacd445ad8a2977f207ab5e3fc1d734187444cf795c7b9412e94fb62bfd962. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPR502504176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ef21e42677a8b9450d3c57cc3807d49e5cd76ee567a534c714106cb7b6a9a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPR502504175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983717bba29af70550ae2e90fbd7b1b33e4c5d4e6036ec65fde8284827526be9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:10:09Z), 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/JPR502504192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654beeb2d70f3c19ab5c32c81be2b01b22a95c474662c86331345d8af4a4106a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:53:16Z), 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/JPR502504197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc43aaf7cb84a07d655a7b20e56e9ecabc67028d1c8a08b76f8ff14816364f69. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:45Z), 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/JPR502504181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450f7dbaa9bb89e128a36f3ed235b60ad02e4209b6e27350a68ee254be853329. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/JPR502508119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49072572cf4ca3915e2340af7411c4898a5c9fa3d0094ef83717597a11c9019. 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/JPR502511938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fe4311015b34e9916b9ddb06cfed54a6f733be1b2935a712b24642c7586a1d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPR502512986.