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 0x513d15f5ef118c5814bc43aecb5b0a32bf277b126dbd6fe097d8c8ae63182b50. 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/e9191a05-6311-4eaf-9598-0ce291fbc0c3.json and https://artists.proofprofile.net/proofs/artist/e9191a05-6311-4eaf-9598-0ce291fbc0c3.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 0xd078134b4c92dd623ac7a9a79b80bc85ee8c5c2cbd9d75ca7f42409d25e2c9ed. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:02:16Z), 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/FR10S1921912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac82aff405cabb4b9a00ac5c6225230e333d205f13d4101ebcb55171d1cd96a0. 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/FR10S1921914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8088b6df7d9c6c63e4257e90995fb5ed9b52b42a11594fa83ae33b1a9e2c822. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:55:27Z), 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/MAA172000627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182c5c10a3636b04546dbac8254f686e4994f0cf6d0680bb71cf47480204763d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/MAA172000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c4d68bbc27f650cb11baf8e2e9e2b489b2c0f707b7df5c5124953907a64c6f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/MAA172000487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d670b1ca670c9220106a184104236629294ca8904098635182f4cb9aba369c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/MAA172000489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699ea40a646c13bf9ca03e094f83fc193ffc847565a9550b0ea5f72ee8bb91ba. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/MAA172000566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c06e640c08e34948631456f08f4e5d767963add5b2c667504356cbbd7aec0e. 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/FR59R1723693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee1dd0e3c40f0c13293460fc44e05da074dac5fac15859fb853ee870f78228b. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:19:40Z), 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/FR59R1723694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1addf0c326f66713fc4ad227dc743254641605f8bb18ba73b0e4a362d9bc5ee. 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/MAA172000849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11a6c89845318b0abdda2dfd288336ffcc91bc05fc1017aded414d21d2deb47. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:26Z), 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/MAA172000850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0637644db057bd54349f8f96f97c55908c25cbe17629484b0951335ff69dc7a6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR59R1722334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac880895e3444c02afd716381109a34c41408ffd5f986cc138b5c7a81a4ced05. 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/FR59R1722338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923b6302d14fa3884ffbe2686c6ba0c395f782c5864ff675479c5bcbc8da8260. 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/FR59R1729625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd173c54467388488890afe66e0c16cfccebb6c2e43ba58051deffa2ca12cb5c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR59R1729627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f8c52119691cd23c0f4eda81d91b5e53a5a8382e855677fdf4c83fb74f3917. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:30Z), 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/FR59R1729628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42eb116933653045946c09f525b442c48efe1da082f40b3fc321ed57dd1fe0f5. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/MAA172001120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22af1f2238163f363d13f9a9b1b668ff97dbbf745c1c070f664f2b0dad27e563. 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/MAA172001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8509950c78e928b0f9865665de864895055054c23ff7dac987b3850b3a8fdbb. 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/MAA172001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71376fec4bbb90ff491d2b26d26f5975ee3d8849123e1ba14c300740f6628eaf. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/MAA172200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8666ae93c54bb2c3f0110315056a3a546464a84e6875cf06b3070f28f23bd29a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:27Z), 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/FR10S1799037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc852b437eadaeace635c2665c82453614d53b3005fbb2b53286fe5f034e76ac1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:44:48Z), 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/FR10S1799038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d36f4790d410198967d07eda20c8373d10d22907919f8db02a77ca52ec7bd50. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FR10S1799040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c117c2102f5c0a22b51b87b2a696c9697c616433a2065ae95ea86fecf5addf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:59Z), 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/FR10S1799042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14dc6eb5e440a2b3fef3d381bb6b25512d9c27022e3ae858ab33ed594d40683. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR10S1799031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf626ecbafacd6df189928852353441518356fc99cb096eee84421d67cc18803. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:40Z), 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/FR10S1799032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b312733b916b8ab72b2fe40e4abd97427c0446fbb8ceaf70f1c7f29dca0d07e. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FR10S1799034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e6d28a9dd26c293c2a50da286da2bd668563ca9fd1c7205a77946dd0fa9fa3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR2X41798495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37278a8bd33187a9b191c08e812c9e1fb25239c019ad551f9787acb4d8ee5c4d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR2X41798496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4248f0d2c4c750f0f348de92ae43bc99dfa0b13f67b840de2ae9c49fc603ea2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR2X41798498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cadca0be7d715fe0e461dd9c3e9704c6e4e4e0229f1c5a877e47ade3f23abf1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR2X41798500.