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 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 0x76e68792ac9a816a1f28133a228bc1ae4e9ce70603295b89e3eb12982243753e. 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/d9d479ea-2405-43e7-bd84-30a81468f440.json and https://artists.proofprofile.net/proofs/artist/d9d479ea-2405-43e7-bd84-30a81468f440.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 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 0xabc428a852faad7cf60f10a175fe820e906c7568fc7695e26c1e76d963cacb26. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEW259800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7581328b071095eaa1a013e24f2877f84a083e0bb5f674cf7606a30f0cebca0. 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/DEW259800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd649ee831b3c5838ce5549c88f46e303fddb44261ca87f685fd2d26a92a7efaf. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEW259800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19767f94cf2d4c0d2e70b349e3f6e63c469be901929acb83c412b85462b72c74. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEW259800614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c67f9ec1f58dba98e0cd0a4f8a9dc56a59bf183d6ff1e0295630894179fc63. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/DEW259800615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef199c50184f14ab97bc8486254104098f6bcbdefcacecbf2a380d635d7ed14. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEW259900619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf6b149e046f980ad354c8ffe82ba06754bd08fbbbe430e9f258c5f20fa02a6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEW259900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd111517b759aa23e4ae7d1be3b89bf2f7a53b907bf93315102d2b977f5a891eb. 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/DEW259900621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9655a5d87a7e972c52c1118e0203ae9e63ea576a7676536cf432191a1f20d73b. 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/DEW259900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afb6a21805239036e41cc5ea02d8fbfe0715dc1ba152db8a0e5add5ebb92810. 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/DEW250100623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd2abfce284dbe8d672164f548efc43d7a738473125036f64a0538c1344e90. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEW250100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588a9aaedd1713221474ec57e2c723d66b799aa9b6bf0b718192b34df3f34031. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEW250100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd91681a414a585194c5948c872d7a9d90ed597897e4fb3484b027b6197fc9e7. 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/DEW250100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a1f19ef19b1e51612004244610d2fb888d3899d5ce57721065085b1c450041. 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/DEW250200624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074c000101d446862106cd831d38f4ded89e7199d2d45c9c2492052c7c7e0804. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEW250200625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f477febd6a1113791f1a181c73c61f02e78ad2bb73930e94dbdfdf322394e2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEW250300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d347f86556d941d5452d86b9132c0e8ec2a9720042622d6f01b87e68ad76977. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEW250300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f5355eedc7afdacf513abb35f4f594ca7294acae3bf7bc5a06966a5a5ab96a. 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/DEW250300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4412f897228636c5b21748d96ddcdfd5246ffbc88e56e00c342b7480d23ab31. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEW250300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd395bb6faa41d075c997a635b1fd836bf94b46f8a48ed078b12b91e0fd858950. 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/DEW250300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf46e4a0bcaa2fa20dc8e1ec1cb21aff8e864abb19f2b8c4e50454dca14bca2b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEW250300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02fc6f67078b2adb27663de6c56b0f1cc1533300d33c51e091cc1dcb9c14b0a. 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/DEW250300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4f7120e70f96395ced336a1e5018acfbe145297c6aa20d4fc3f09a0595c09. 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/DEW250500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c24a489a02a6e03ad54df68a0711ba8b19eaea8ada5978d8f693f8a1ca9c1e9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEW250500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cce20773583dc9fc9933083fac7dc79d58fdd26c20b2aad2ce37111ecd902b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DEW250500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1a0fe9987ed038867ae741dd2bf99de737f6a6539ffcfab0cc70f320b46c5c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEW250500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7df2083ecab140530fe6688125be6ed39146317d4fb22c0c2e0dac743042b1e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/DEW250500433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63bd3651ceddfecb329e0f587643fc6dc7b3112e7f37aac058b1e0b83ee900. 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/DEW250500434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f724441fcafab513cded0816832f1aa5af92b620fafe1d330b7fb5320ea28a7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEW250500435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72acb9a06c63cc6f026890a7dd94ea54c54a8062517d0cc08fddfc440404d67. 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/DEW250500436.
Poor People Must Work - Carl Craig Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e81d920cf72462525e41033365c2cac8a3a52e04dc6da9c4d6337d0105098. 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/DEW250600443.
Let Jah Love Come - Sweet Substance Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6415db93d9de796da0798d429fb78cf7547b0bd4d60a6a45ef000e68a7009165. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEW250600445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec22824ddadd4522babf7f4f80cf9c560d7c4fe1a4fbefda4ab05e556d92870. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEW250600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd271a1248ef5333a8da35797d958eefa1a8f221d36c322e6fa7e6765af5476c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEW250300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd271a1248ef5333a8da35797d958eefa1a8f221d36c322e6fa7e6765af5476c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEW250300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c0a7c72476becbf457c06724cf958fb17d9bb11bfd8d0e1d742a28ac28dac3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG931791860.