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 0x1152dc3371c79120769d900e71ab7d9f017ea725d311f7aa7401bb14f50a7127. 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/1e685d6c-f794-4b9d-a3bf-57a5b7fd210b.json and https://artists.proofprofile.net/proofs/artist/1e685d6c-f794-4b9d-a3bf-57a5b7fd210b.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 0x3acdd00b74a11a467fefaf87a49f166293187f3c609a053d0f7d92e6982d5fd8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:04Z), 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/TCADM1813262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256c3840232e46a5640f402b64337ba7b82a8a1736b386696e7cf47b231dabd. 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/FRX851801540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53030d15b181456af7204d8ced1b423b4dfbbbb59eb3370dc7d513baaeb5f82d. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/FRX851801342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb0735ea712b9990575414657457e56b5185c8a0f20819c06881c3167811172. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/FRX851801574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dba6b3f2100ee0ecbb868bb7970ae8b97cb52e7c6eae1513cc853045f5d232. 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/TCAEM1965128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dfafa485327362b7083bea7ac6f457dbc04a6e3dc12b4bf9d8e6bb8bcf2aa6. 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/TCAEQ2055230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6fafa581c431e280e7e3155d84c4d069e4fc9e221ab6bdc9679f405f51fb76. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAES2012959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6d57ff3201d5bc7888f080fb5b49f007ca5bbd514598679560053452bccd71. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FXQ022000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fabf018151216e9d49dc364cc6eadb95d6d6ebfd432c41f8b2034808efd7c06. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FXQ022000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04399191c8ede57abd42b951b5e1431996403710c903beb7f05abf4a310e6126. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:25Z), 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/FXQ022000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a779aabeb411e868502c2e85551920f35e3421d088d4f0d60f6dffeb613d1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR2V72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40acc098f9151b1cbbb0d4d4eb5ee3874f027f30f86e6f7011e30d8e72edc195. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2V72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93ea07af044526a9ecf356efeb68ac237e707e3db597e5e468ecb8098a85a28. 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/FR2V72200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc117573c7d1871442421a2e695e6bc2fe1719e3debc48a0c0e0eb732cd399c6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HKE712200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bea29f3edf83d44aa4f6230902415586de55e0ff7d9c00e85a2cdda19970231. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAIY2403822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7077458e05547b0ebe964219eb8932af6933afa138d9d7fc337b7809142ee7a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/FRX452510300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba0cc39e399551d73ce19803b9d07afcb45650fcdf26fd3b1508b7ad3cdec9d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452559600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a8ae71f51e039c9d98f46ccee58f70d9a0205d9ee44c1ff3a5e3eb6e38abd3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT65Z2512545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c25c8c06e4fd99a67121c486417c2fb8938dbe33aa3dc1d8b2b4cef86951a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR0U92000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a67b688a6c262d341eb22e127183ee54d246679c69cc4ebc78d1c97fff5d550. 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/NL5HJ2200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac33907991b272060e0bee790a59f23846199d2a1468e9e85ff2e909bee38ed. 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/TCAHM2349188.