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 0xf0fe45950c8d25c4287efa2f80082ddb2d0d6f2af092f2e548bcb754d77697c3. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34047fa7-ec79-4537-9776-49292caa3b35.json and https://artists.proofprofile.net/proofs/artist/34047fa7-ec79-4537-9776-49292caa3b35.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 0xfdc0e0d4430cba2fd32b4ec16c66b610db23873b0414a69569b567125e0e8e73. 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/GBMA22405307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537f3061dea648071dec4d4a2132c6d53936f905fc3e13e2268b53ec837d2912. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA22483693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31949dcde5902e5e372d5aa7d98b9ccb392f74bb2076a6536c61b1af7907d114. 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/GBMA22483694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5063044fcfdeeb5d8ce52eb292ceb77a87a8f948ad5f64048a563ad28d367c3. 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/GBMA22483691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0082b9c0c5160a6998d60d35e3cafbc130a97b6fd9be522e01999363445f7e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA22483695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab61aa836748ca98a82d5f4f200ee52bb95ebc09e8aef2464520982eb4e5bb8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMA22483696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3751dac5e2081773b360e8931de5faf7edcf79d0f3ef3cc88a62c4a6b320aef. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBMA22419327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0085861b4a1f82b78ff5677b79db50a7d559d391753606f9cf019c041d9ca467. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBMA22432758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d7f442fddceea64c57f2d1f847bf75a02e52278e2bca3ee14369e15b8d9b01. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBMA22483692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae529430964a69ad15d96cbda2e5901860f935b8ce5949931b0f76eb19bfb39c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBMA22446538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b101a99ea6d5978cf847001c74285744e675e881b0f0c0c20192dc506c7fd64. 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/GX53U2341734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcc53c8f23cfbdfb245033ed0dc10062ebbd6dbb6e163045dc35e7375db6624. 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/GXF9Q2476447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7df9d1e2bd2671960c895226ce1112358ac00f19e1ccdfac275c8941b64a1b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GXF9Q2476422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071991ad0b3f6658b9e0a2feb3a22f9447fdd8a78efc4bed2e529bf961f0ae8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/UKXN22524033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a57ff86a3ff75b6964498c13cd4accb789984fb3eddc80be364f54575b044e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKXN22553348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd59c86511334221fc99890a6e4a793d2f305b1af5090e78811ab2d6ed0f7ad. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLFP2512153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac67f8d95c8cd694d8968eb01bf8c0cb4f10f34d810d94690d1c3421e3eb422. 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/GBLFP2512155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fac65a4679a2f8edb02c0532aac1ecbe0c623af1073b18e752a8c7acfdcfec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBLFP2512157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9112ad2fdbb0e83d6d6e00ff49fe4e0997894854e2e334aa928ecd1e759cbdb7. 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/GBLFP2512158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd266aedb4417ff61261bbb196ff4ae5a931d6dbd6015a5158ce439a333f22c7d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:51:55Z), 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/GBMA22514344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c8ba14a1af8f5432affad8540c2c7f3701bd142e995d52d835d0b05941bb93. 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/GBMA22597194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2bf1cccdebcb593b359e2ebe42a2d751be770d19e0147e1716ea56581d2c0. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:52:33Z), 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/GBMA22597193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89310d839c0edecd152522fe594849125088bdbb75485eca3fc5e09e0c3950d5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX53U2526401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb0a0b665a444f43fc5ed8e8d47dcb2de9c2bda3b1740c3383f93568e59d1c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:15Z), 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/GX53U2552204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed33c18d970f10d956f5e94cdf48ec0ce9e08698550d67dfc6dcf0476574de64. 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/GXHAF2569335.