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 0x819f918ccce9d8d3bfdbe135ccef201d88c621c924cc1b4b2caf5ee3785932c5. 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/35b4b365-324a-44ea-b056-24d32f954a06.json and https://artists.proofprofile.net/proofs/artist/35b4b365-324a-44ea-b056-24d32f954a06.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 0x53adeb8f57eb089b749c2c75f4e078c5ef5ba11bc2e00755411234f3167d10ac. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDA51816648.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79c31a1538c1040f87fe1faed8ddaf13be2d39d48238a1b455d811ce09265a7. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:08:24Z), 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/ATAJ12000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d8c07c8b8fc83ed3bc4684cf0cbb6c89b545eb31fbc71c28a68c728a1ac364. 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/ATAJ12100551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fa1add89ab60446385aa2f0aec5ae2a52f05c6d0de59ef5016ddcf3d716d6b. 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/UKXN22218434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eb0d9961ce78e096f007447f765940308586668e705863427d0364e0601179. 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/ATAJ12200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615e1f4354b697d7544076914434d77fa4d5721daa1ff92615ff12e139b6bb2. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:02:50Z), 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/GBLFP2292845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75be90fbe2d0acb6db38d563940b5536bd25e45fcbcce4d93cdafdf7344117. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBLFP2282333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0032afb3e03fcecb4b62fad8b708b35ef6c80d37482b4f277fd442aaa92798c3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/UKXN22218437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5464e33f0cf78b736b596ce24c625e7224a45a20fe3fb52a60a0b4a94373089d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLFP2329732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba529173d869a8a8fb50e42a2ca5d27ee835159b0c2914345dbe3dcce32808d9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBLFP2372959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0fdd4ad553d9584a8d0cdc465c2926b0aa2bc46dd69b51773ab499b2b51ec4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:18Z), 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/GBLFP2363771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7805dac984da6fcf9ade2c2f3891b166487d0f1dc97dd94291cb3c83af78311. 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/GBLFP2372886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e9573a07e8a11a93fcd802703c2273e70e5987ce4836c234dedb7b322f39f0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:49:57Z), 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/GBLFP2357538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf9fead7a6569e725104c8d88052b806dede625d8bdec84d6fd105eb3d2b650. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLFP2371954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c7da56d461a0667b9ec289ec8f88ffc8ce235051d9d2ab351a6cd608336a2d. 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/GBMA22421760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0816ddec28a78d5ea717c6ce0a5f25a8dc196a57a5c06deebf435480a9366113. 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/GBMA22421761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ec23a3dd1b0da8addcf30b0bd1cfee74bf391a3c3fb96124d3f8b4c0fedfd1. 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/GBMA22421768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ff4cd58bd6489bc632cce1a2d1399f5c957336effd87091f034cb56db4cd0. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/UKXN22532251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc592cc4795e91c5d2bd0d6c1800d9fbd00272947f3987ff6fc89371b0f866b45. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:09Z), 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/GBLFP2547796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e6cb1ac088d244fa84cd119dc659cb011c1a79b389c13086fbc163e519b458. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GX53U2633071.