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 0x58f48d5bf3f615dc4494125940e25df200bdfa449f7733922b7d49406da29a2b. 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/007be972-72a2-4e34-933b-fcbbc1537067.json and https://artists.proofprofile.net/proofs/artist/007be972-72a2-4e34-933b-fcbbc1537067.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 0xc92725f8781779178a85b2eee24da8f2b2946764557f9cb625c7d32ff800729a. 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/SE5Q51700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9867ab0827dd0b1065f2c0ed6a7dab14bf31b9b5c25e5b6540d45f0e0eedf0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SE5Q51700378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca88a0128160a3a2f0e076acddc3d98154b24df1e733358e0eda598096fbb7e. 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/SE5Q51700971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e9ca307386d3ae35a20e17b4e7574a0355006dd2bf5d2a0e29e51bf5f66d36. 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/SE5Q51700973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f6b7e6f459e305f12910cc8308d9238c4070c5752535a2178a5fef8df01041. 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/SE5Q51700974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8763b0ff76345dc5ccdce482c1973f7da1b1856be7e509e71224205ce3c06b23. 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/SE5Q51818819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ce85dd0ef54f1403c84b830e677918ae65b82b28ccf33213dff17629514874. 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/SE5Q51800754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b86adfd24e839383afb7d6d52bf7b14cec2532f2f360cade8f4b429344abdb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SE5Q51800704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788b4857884a1ef1b7d116732a329988c1809fa5000ddfcfa66b823705e3a8d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5Q51900951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5114be9bddbace931121cbe2b57dbf998259572b94a4caba42685cd1e4d1ce8. 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/SE5Q51810140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41429785ce366f2b178ff5296966f92e78cbb9598aa57c0a6d9b755a90df94e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/SE5Q51900943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2ca28b14b519b938d39e7ed46bce7fea2424b9b4a6560022ad65884b1ec6d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:15:10Z), 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/SE5Q51902334.
Rev Run (Cospe Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcae0659386ffd9b59c553921ad95ef277e24bd2c6952011d96cf5d8f2a272a. 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/SE5Q51901801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64be011253b288f77257314dc31961297d3d9fcaf240f1f5207475a2a679aff. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/SE5Q51902958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97942aa1ac5853cc784ad1f5409f9613194c4a879e8df3fa2fc5d642deb0e3c8. 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/SE5Q51903601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08c096287d91e39f9b55d961de635e0bdae15775ecc57b61be12df8e7724b73. 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/SE5Q52000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fdeb08a293079f701dd56d0ff0a27e5eeac84d0d5242421b3c52ab42211554. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SE5Q52000892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84475e384ccbf09917087be7ea986f50488f88a5288a6f0af2a21cd916c5cd3. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/SE5Q52000886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431d5bb160d2baa4ac2181533b6d51f7087dba4d4a5de274031ef7e94d7a926. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:01Z), 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/SE5Q52001839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597b887b277c96672fc7948c776bedbad19b1dc6cd6ffa84453efbf2b0524cf4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SE5Q52001986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42ff6bc4f06586535a30fd9ae4099ac6383be5af999723d3f043ae45cb89026. 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/SE5Q52102579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59eff39d046172f11b68f502d98848cbde81bcf43b2d808658f5791159ca1f4. 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/SE5Q52102054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcfd82d7aec5c65a57f8ee22e472f1f61a059d078ddbd293e1c7c39ac3da18d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE5Q52102272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f72add342b2705be7be5403b75c2ca351f08335fa307ea907e8b4864e67af. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:07:34Z), 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/SE5Q52201696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386f394b844777c8e19372147971c827cfe0bf7ffea972e5104477106b209a49. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5Q52203905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21ddfecc713d9f17c2963078509833b2a3d7fc466676370357c6e3dc75c3bfb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE5Q52301926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d500845e94940fe9696f1ea96066140737439b3957ef6dd598052b6ac0d4aa. 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/SE5Q52302599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bf00996eb0445e6bede7ed4d5b06ae81a0b810df8f94188b386a37be1879e9. 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/SE5Q52303459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d8d2682d92fa66f19e9213aad1490bf06f20eef9cb9262a68ef85e00678d5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:23Z), 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/QZTB92469036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6c28c59e5a8db1a30cc7b94a8e313a55fe94ec8fba08f778832047b065f21b. 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/QZZ7P2465908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c657f195d6e0589386f0906512e5213f87990af31fcc9a23ad3762ac12bf0e3. 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/SE5Q51900924.