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 0x95e54c258cfff759a661dd7d9ac7e3910ba4d3eb0cfe8149bb371a9a01d0337e. 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/31ef34c9-5c14-4e1d-8a9f-57eec1191dd1.json and https://artists.proofprofile.net/proofs/artist/31ef34c9-5c14-4e1d-8a9f-57eec1191dd1.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 0xa44e8c1e2f9ada09dadbfea51afcddbdacfbf4918c6275f53b89e9a6ed6e67a9. 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/FR6V80072417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79567f2804fa30f599c51c5df9c3b3b191bbaa99542e3496136a49c7abbd99c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ITA610600434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bbd61a25fca52ab7faf484a9dd10e8221dfa7e68ebf3118828f828c272d501. 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/FR6V80474632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e43ae0549ffaf94ad34069d5776b5ac95c06642587503104c0bcfda77143e2. 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/FR6V80474633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e523165ce0c50f37fe1995561e6d0882437c35a746b5863e72fe7f7d1b5ce7. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR6V80474634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908d08e582c5852589909f6c6100e93039329c704340e734c492969dcd70ec88. 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/FR6V80474636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d834fe4f5e50939e02c45db40cacaa47d21470bf7244be4ad8dbb14771ef76. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6V80474637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06023ea23593bd643bcc941d7e0437abb01136c425bec47b3ec3084cb29cd4fe. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:24Z), 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/FR6V80474639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf485924aa78403544c4cd311601fcc9a06febfa39cf0b376ec3b447739bdb1dd. 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/FR6V80474650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb879fd8ebd4ffd4d0cbbb45fe1977cd7b211d905d94b413b2a3f26192e7d7a6. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/FR6V80474658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcb82b38aed023107a0e4a6d29b773fa55acd0c643062649e5fffe33dbe3a1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR6V80483442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4b14d51d9e05ba51a900d3809f670deaa8172458ff23e65676ce1accd760e6. 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/FR6V80483445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a98b09e424ba23e653549bed4f75e6249f1de8955891543f0ae1341686ee002. 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/FR6V80485213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf455679afe7b002e92c81c11c48f5a6e0e1efa11ca67d08cd80df04535cfdd96. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V80088850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d044bfd61eca6baddac1387c8eb0f5631d00f4357cf8105be674971fed6954. 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/FR6V80088814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd14ed34438f709a7f3bc9c27dfc18820a18e2c008c382e4eb1d1319a334c1b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6V80088815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc41f6a1fc4374156a29d2b534ff8125549f45a2d4e0223d4675962b67c7bff2. 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/FR6V80088816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51bfe57a689a17d36e5d5222c349487fefd0093656956e9b9b2a7cca32f206b. 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/FR6V80088817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5b7ed49d502745c5fc439659a8d1d858448cfb35843492aa82701e97fb7f83. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:32:30Z), 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/FR6V80088827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c06e7fb0e5aca077281918d09287e555a214b57961f1508dca9aa35fa2238b7. 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/FR59R1834534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec59b277b9a298eb0e30b724feb0dd695941cf93e01f8861829d5185a144a260. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR59R1834871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea936e5a44562d275ba3acd6baaaca2e8e63eacaf67d392c161e252b0cf9d4d3. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR59R1834872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d5e73809f58fdca653c77aa6719e6cdf2bfe22e7933febe5a8f7940239e4d6. 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/FR59R1834874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a6842409b55676ffe7f35f72110882be91c854978c98d7c884152b559bd344. 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/FR59R1834494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35aa80c8baf1b56a4092326d2b9bc6e62c2523aed3356aa766ad79edb1d5166. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:12:15Z), 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/FR59R1834496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffccf63af066d5b5eaa7ae2ac5bd5237f4a7a232db040ab324f871ad228a1d9. 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/FR59R1834497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7025e0f6f986ee139b5fc53ddd5936d058962334fe4b01cb72272d8c236b4684. 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/FR59R1834500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dff63f138798c63e3fbe1024eefacc9483433055234818d02325b21a91e3b72. 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/FR59R1829808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ad8972166e61935fb14fd29d353d02ae6ea0bfbe45cf96d0086bd9a319b372. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR59R1829795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba980abf156ac007720f4f4dacf3cfbee38943e31d5680a50bda5c4a7856811. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR59R1829796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39de21d99141e8a1c9ae345f28e67bc0b155af656beb36b0ee15c77f4d7e0b67. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR59R1829798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36caf328750c7d369236944e4eb31b97165463cfd6298f630fe58fb5c0ea1413. 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/FR59R1829799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c201727aec7085e776d134acca7b513105108c5e3e4c464cd136bba52d41bf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:38Z), 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/FR59R1829801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b5e6cdd6ee6989a5d0fffec9bdcbac1ef6b739fa1bf83520089f539ae6a48. 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/FR59R1829802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e34a0949dc0e8f6fea8fa1ba09eed591086bf38effdcad534923ebef738fe4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:50Z), 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/FR59R1829803.