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 0x34d8a08237ba4c73e729af59f78d0fc9ad536c69a8ef45acb1d31f239c9462dc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46a5ce07-11ca-4722-896a-b9e33535e4e8.json and https://artists.proofprofile.net/proofs/artist/46a5ce07-11ca-4722-896a-b9e33535e4e8.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 0xca834d3a530155b86931fa1f32c5a314dd36cd83ba078581b60cf5eaa3251283. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEBL61124997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac2778d50572759a29ff59421bc37c1e48126b5a78714f99f4908191dfd49ee. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:31:13Z), 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/CA6D21000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5315d115d4e8fb736a6cebc0fe2df33bec03355c98d76da224a9af29cc66a52. 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/TCABP1346555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed543073b13cb233dadb98c9df6ca2ee15b80adee43b54e9b7b8e9ae2cb4e50. 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/TCABP1346561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca2cb83decc7b71250955e36ef9864fd3097a05e74df8992aea43a6938589b. 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/TCABU1466809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897b4e72ff2fe6e3803f87bf1140231bdfb47865cddd34b13c115693675b8239. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCACD1502821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4418d5d9385e26b2a59cb3c0589385302d2a1688dbb6c154c09f1b341de34002. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA6D21500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c6a9432f5928ee9984d21505e3ac2e2eab0d26144ba7ff2178bc06be5ab9e0. 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/CA6D21500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499c944a87a991ccefacbb06c87e9a03c6461294c101da1fd6722a5fd9488e12. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CA6D21500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3ff87ada12708653348011cb9ad8362c7b162d282438c5801ac993bfdb2d01. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCADR1854509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0a33d6577f1850b611fcea9494d500370d8f1a3da2a77d5b99b4383f0bde3c. 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/TCADW1809544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde55d5bea5b614166d98489fcda78ce1599f19d459f43b59909e19f8907b5b23. 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/TCADW1809545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7078f6eab8b8ab5fcac61a53353bec10e207a108f01f4707dced7447bc58a. 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/CA6D22000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a25c2c6627fa002168db8b1140be19f54a93c65c37ecc2c1cd713a5d9fd2439. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:01Z), 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/CA6D22000231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e9efd9ec24e1690519979ae5db072357057a12e4cb1c3d8b22ac148d249a8. 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/CA6D22100558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c67ac90706717d46759e89a9f8498eb557ed5154b2aec1e7695a9b2dd9fd6c. 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/CA6D22300466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47ffeb841fd8c1cd1744aacf11a9ef3d395772304ccb7006f7d28cd76c336d0. 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/CA6D22000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeebdf385f2554e912549ace8c1054b48e8c641c2a441c7abaad6b464a8c8a13. 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/CA6D22000552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca7e6c58bc5af94ec83a7e3749ade17f13387d7e3c3eca03af382e920de0b52. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA6D21400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d3b2272bdf53956621528df1e36a381239b0d544b864db9497927b79af468f. 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/DEEN71100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeebdf385f2554e912549ace8c1054b48e8c641c2a441c7abaad6b464a8c8a13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22000552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e2d6862b6a2b90a957bd33518002056aefb03b9e41581a107e49604eddd15. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA6D22000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1833904b71463aa3ebda426f3570687381b3c08c2cea687a5e9ed874c8b5a86e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL2087318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023ea05716bfa8eff53740df64785c723c64ec09d1398ea49523b23d02f8f074. 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/CA6D22300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeebdf385f2554e912549ace8c1054b48e8c641c2a441c7abaad6b464a8c8a13. 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/CA6D22000552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a946acb1064b2d297fb682b7f3abd7d9ad34bbe02ab393e69d8a1bea4e65679. 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/CA6D22000353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7078f6eab8b8ab5fcac61a53353bec10e207a108f01f4707dced7447bc58a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CA6D22000275.