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 0xf91450330955d5e87b1a0db180db8a6b4067a2c37c03a78e35e73cad80463d07. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdb86e5a-19ba-484d-88f0-dbaebea5aefe.json and https://artists.proofprofile.net/proofs/artist/bdb86e5a-19ba-484d-88f0-dbaebea5aefe.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 0xd6e78a4862717e54e64112078d8e0f7d613717e3daa4a66cb5d64f74179aa619. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM90592572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b4a126910d45d3a85bb9a4cc9d00cdd3624c601fa07e817475fef02e006b67. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM90592576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0a84654308a5dd433add8df478d69903bb26dc895be7edf3354a252a3b26a. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USHM90592577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4d55d118362288c9fc51075e6dbe88ac69432e0a46aa363f9dabad726b4495. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM90592578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2304bc31327928726b2e7e9860d32b240dec6246b7b81a3cb401197369f7b95b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:30:09Z), 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/USHM90592581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a07a8003e1cc86e92d36bc610615262558b5099eb2f48aaff420aec73abbbca. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USHM90592537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61becf4f9838242596991bfdee21bb29548df55f69459ac5528dd1c40a55703. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USHM90592539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6394fd04437b326f87aa8c74d6094f7c8101dd0c0fa1d8481e5a8de8e84951a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:36Z), 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/USHM90592540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f0d682bea508793c91f902f125999738197c087bf7548f0d3d97f6246869a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:59Z), 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/USHM90592541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63edc1f6c9bafe8045d756e675c152474e589f14d593571fe04d828ee8eb7120. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM90592544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cecb16005f74caf1faa2784e96951cf35b2201482133b53c8c3fc3e59f75ad9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:54Z), 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/USHM90592545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9fd9f91fbfb68e383f76a95decccc1138ee5bcc0e4080801677315c64d791c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USHM90592546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32502298edafb637d00bc354970e8c1461ae53854366abbbc039cb679a770ccf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM90592528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18163ffd0f6e81d6113b17995af321997a7ccf7f52a6b3ee625d679860234cd5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM90592529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e930f3cd459e304557dfcd67b2985e2f8a4d516b5fd159518e7902889fd8c8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:57Z), 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/USHM90592531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd62b181abca0443f4a1f9feed836181421706f4e2e122013812cc4d1283e581. 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/USHM90592533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836001621503f95aa6fddbf06ba94d1d8d1c479b66a0fcc273a7683e6d551f7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:19Z), 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/USHM90592534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270b114349703bdf187876fb3cffc2c69502b88ea9f7e946a187c9a7a8775d8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:25Z), 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/USHM90592535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa987d87a958deda7c362ee14cb6c550704fcc950c688cdadbd1bfdb4b435a648. 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/USHM90592536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e76d3b97316e2e27e4c3ecd98c03ae86c5bced671f783714ca392bc324f622. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USHM90592490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55a343a31472cd9cdd6cc255ac31013ec065952f0f82f2c9c58adb38363038b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM90592491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569b6651976f845995dff06a2a65336b35b6cb7565bc183673241435be1f6d5b. 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/USHM90592492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b429f3ef33849d7b10207e3b43f399320736b8eb7a682e4cdfbba058be71867. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM90592493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b5b573d9aae0277822be9afdc8ff8e1f188bd46dc830d7a425be61fcd4fe22. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:47Z), 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/USHM90592496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9058412cdf3086e2e8929b0d1fbbc2d32ee3acaaac75d7a7934d95053a7cbfb8. 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/USHM90592497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a0d3aa9dc7b3a6d9575639ef694a50de2b997dc214721f450dcb7251900a53. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM90592499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944154ef041f302fe2e83993ea14aabbb978e8e57bb0544490d7ed21cfd7501b. 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/USHM90592606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df1d1b0feb1c330f5f532e3650764233af831f7c5cf7e6ec2d88f3c0e81c0f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM90592607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54bf58c5646d1923e04d3fdd1d0b38ea60998ce95aa9f5449316c69618cf8f0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:41:26Z), 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/USHM90592610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d04c5328070d9415966c28c8441ba63eb9ed760503ececd468badb1bb81a9f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM90592611.