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 0x5a3f13200baeaa0eabb03ff6f7eb08b3526a68e56c9171ec467994755f7414a1. 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/faf05a0d-51fd-4571-8a3e-330f4be796ad.json and https://artists.proofprofile.net/proofs/artist/faf05a0d-51fd-4571-8a3e-330f4be796ad.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 0x328f2650c539cf312d1cbcfeb737caac921c27e486c357b55fec32ab98ff8c8d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE5Q51800576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a593f45f495d4ed53fca1615c56dd7a7dd21c1d231a4548bf9cd1cbb7b3b8c. 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/SE5Q51800939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3af3e09e7c2da9bdd45b37544be8f42d9bf9b74439864387b16d23af9b33f7. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SE5Q51828652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dcd9059079373c4956dc194f05dac0457fb4d89f25fa39e7a8dc6c4dc568a9. 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/SE5Q51828999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a593f45f495d4ed53fca1615c56dd7a7dd21c1d231a4548bf9cd1cbb7b3b8c. 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/SE5Q51800939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976f68693388d12fb2478b510a35f757c3d4088c031499e5c7d2f8c1e7fc322d. 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/SE5Q51900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b47986614a02ce58babff81d40f4e2ad34221eee5ebd283e91c6540b743198f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/SE5Q51816680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87334fac960c52710acaf11f88f9d282274e969f15b1f319c86a797115d571b3. 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/SE5Q51828572.
Sweat on Me (Trice Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5015fb445b55d87b9b35e99eac7ca26965b30b8bac0f82a80e8a0a1ae5d85a3. 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/SE5Q51901778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8547e57288d4542133836de77a5c7103bb03a1f3a6998771b372315a5539e759. 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/SE5Q51902257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec7653f0e56acfec17025593c1df986f8a0c3d6a28354f8f42839409d6313fc. 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/SE5Q51902072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73fd1fc633765482764f2ece0e3b63f5dd639d2026015b56af404d588d9746b. 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/SE5Q51901817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4e9003033cb5f449557a564fc0270292ede04524765ef9ebc01971a5bccb9a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5Q51800884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2006498bfe7c0c5d71efa2a72e60b2576cd23b6994a19e22384b95492e3ea4. 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/SE5Q51902130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e46ebd3971590665443888724ec4251ecc5f011e44de9ec9dc37bf815ecf999. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SE5Q51902962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204c5225e56c83e894c32e13a5cbccaad6b85a2360de6db076f97cd656eda6dd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE5Q51902307.
Call on Me (STRLGHT Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa62b93214e32b9aaf453a837b02672edbca1cb33e615c3f32ded86d74fa9d6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE5Q51903460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831d6129fbba9ac544e9e0ffa6ef683f39c7ea05f732cc504375861c9909e9f3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q52002019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4f31043a01d2eb9ecd9f9cafd9427029ecaa2ced494533a8a5054652e59c91. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE5Q52002227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7f4cf3bb5f531505c846df1943500414647738259d4e59f28c854b1c9fe41. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5Q52002370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa549a53ebebf3648c17441953036bce35630ed1788a63e24eb4a143dcaa046f9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5Q52002385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e576e1b670c29673ac01af6bb1b9898e1aeaf0f2c4f97dbc2dc63ed5e20826. 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/SE5Q52003555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5cb94a5b9d931f1dd4c69bbf504187baa814616ad2c4dde8c1bb9eca6f2d37. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q52100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b50d6d7f2282875b6f576ec24017c3d2dd218407d087e20eb2e97c636ee215. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/SE5Q52100942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f27b5207606fc4d89997e47d0491e5ed1fc253261cdf09791cfb8e783d4bd2. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/SE5Q52100984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85badfe07447d42f4aead5b49bba910478fa266ecbb09e9004d4e53c75ba6723. 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/SE5Q52101792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2235c37264e438ccbf9cd62347f3ab93dac2dccd765fba567c856a5c81ac099. 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/SE5Q52101869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dde88089ef76001a4485a7c219630459deee0729aa0ea45964cd8847b1e3bb. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/SE5Q52101649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7154d92c589cd56d769b46e2c17888fcd864744d593e64b41c5cb02c1b9c253f. 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/SE5Q52101718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc152fdd217d77dc6ee791c1b97a27957b86f8ad65bd34d9c25a2364f1932524. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SE5Q52102297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7578d85afee9c13df2c6ccde8de6d39687a7221f484be9d128066af58e0afe5. 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/SE5Q52102586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ea6c6353d56c39e57ed43eee05b9860ff666a8224efc77ea8715ab4aa63131. 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/SE5Q52102779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0c2cf26ac8b2a8021e62dabdb94c88216f200008f9c50aded08c8d0c6a3534. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5Q52102035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba9e1cdb86656f10b1f7c8a75984670d7899eba392bcaad1c2e6351dbe458c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5Q52103122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef6e4e658f92cc4f91a1a092d0bb319f3c106dba8bc0355b20e7182e09f2899. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/SE5Q52103620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ba9578ca4adfa75103480ddae8cb92c544732c0f93a3763a9dc7d188cbb020. 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/SE5Q52200820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ad51668dc6e96241685952a53b0225947b28a0cf082b326fda5e8c803928c. 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/SE5Q52201699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0221de91f26305fa0582353880a39b9ac774b3311cf9c7562192d223de1ee6cc. 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/SE66H2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e42885d55a13272eca0a7b0bcbfcb40edf3bdeb00141d48101d4167d591004. 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/SE5Q52203270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a68a5ceb688285afe54fe82cda5c425ec52ff91ff329662bc90510befcd273. 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/QZRP42461142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc225323b1339e1972d34dfd6da35e11713106b488b120c99a2cd6503bec644e1. 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/SE5Q52300605.