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 0x0810c1d3fec66537bd8678055a8f823cd299af0f217294b7f09e39bf51199944. 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/008072d4-c3a2-4e09-9804-32fb5a2803b7.json and https://artists.proofprofile.net/proofs/artist/008072d4-c3a2-4e09-9804-32fb5a2803b7.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 0x8e7557d0f4a91ef100fcc5896ce97a5da1311ce207a4c5eb62b067f99021e913. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FIUM71600723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b72524531a588df40d410310f378490ba53dda4bc7f96bb675bb82f4cc9428c. 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/FIUM71600722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd085a30b616511a3cae79678ea7cc92a3e89513c20bcd7cac0a0d96161e7df42. 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/FIS7H1700005.
Sinatra (feat. Opera Skaala & Adi L Hasla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda98571466cda0f987d890b217e3b4c7feeabfe8c5e68901c82ec77d561a4861. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FIS7H1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471329926d0119c03c570ddea074844aea218f69e16f03c3f59f8a2d450b9b21. 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/FIUM71600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80d31df6595e7a16be72bf3a63a0b4b606077e96d4d3d25b7298d21d6efcdc. 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/FIS7H1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1929ea6bc4ead7bd9c731f032da0c91bb3625d3b3967958dc11441367589413. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:25:14Z), 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/FIS7H1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc19052cd6de47df1033691f6e1f6d8ec5d3304e67099865389c7d732fec3b. 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/FIS7H1900008.
Kulissit kuntoon (feat. Pyhimys & Specks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932c8832f5a3e6e50ffa2444338a8b2e1e209ad774352092982a5fb40bbbc2ca. 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/FIS7H1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80d31df6595e7a16be72bf3a63a0b4b606077e96d4d3d25b7298d21d6efcdc. 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/FIS7H1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b4a43ed30b8a98d7118292ef592bbedac3bb8c825fd3447d81bbaa3d25ba5. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:59Z), 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/FIS7H1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac710ceca2607ea59ae013f67e583317f8deb4180cd1ac06f47cce9f5401dae. 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/FIS7H2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e496e49bde44825a4e6581adc3c1223966f4320d942b6c523f237ce184b7384. 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/FIS7H2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c0955307d1fdfb1d980a1713576169a419b593f59956f9b51b62fcad703514. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:24:06Z), 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/FIS7H2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57833e9a3e48f23feefef10054a6c5799d36ceb425354b04967d3a50d0f71a4a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FIS7H2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355948c6b47af0a951b6ea585e96022573e63098ef9858040a04f5440f09902. 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/FIS7H2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1470bf819d28172b95c1865b85c3d3b14e4cd53080e7eb3afcb9a04dce5ccc9a. 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/FIS7H2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e496e49bde44825a4e6581adc3c1223966f4320d942b6c523f237ce184b7384. 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/FIS7H2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7006a8a429e07e867fd3f6dbc5d5e8d40e73332866851a4c50524210494d2b40. 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/FIS7H2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0b9d912e91bef27c9ab8ec234fd0edb2ca0d4fa37652a11204bdd6d68344e4. 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/FIS7H2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4c5ff18765a9bf92167dede57684edc7f0c6dce173197949bf10c5c51a325. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:18:38Z), 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/FIS7H2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a466fa6d8dbf4d9bb5aa9736a5c352d9d56b46a1d60d17285c1924f3a09a5. 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/FIS7H2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4f435ec86145c3ed8db665da978b5644349cbeba1b20d47b5019b43d087906. 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/FIS7H2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef758ff9e65abf757b927f5821d638ce8820c32a9bc19496c3f6153a2323700b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FIS7H2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64385aa1249220e5bb950b42d68ce854f2b2e7ee6bff5db52d42bf8db55a96a3. 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/FIS7H2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43b2487b0631242b1a4585e52c7b673f5c1749645be53d151303c7cfd93397d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FIS7H2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76e4b922ca838f476d482df928ac1b4db957225df76adbadc47ac8addfb3009. 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/FIS7H2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef758ff9e65abf757b927f5821d638ce8820c32a9bc19496c3f6153a2323700b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FIS7H2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64385aa1249220e5bb950b42d68ce854f2b2e7ee6bff5db52d42bf8db55a96a3. 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/FIS7H2300001.