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 0x88eb80752fa49b1424d1506305af4fc31ff890a2ef6dfdedd0b7424c19514016. 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/490ab14a-c3f3-409f-ab72-f9b7d31be0a2.json and https://artists.proofprofile.net/proofs/artist/490ab14a-c3f3-409f-ab72-f9b7d31be0a2.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 0x62ebdbcdea8c4475c242011c0343e849e2c0e07cc2f1dddeeb8b6c272e387734. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:49Z), 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/USMH92332497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a037304a0d3136a077263a357c14e9edfa0c529946a7ad43a2c603988d2e8f4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:06:15Z), 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/USCGH2258828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b397cd3cb839af620d2392b3342e0956ebf8b84c3caf529897c91e12d91871e. 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/USX9P2335216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed2890fb881cd95058df07f9a5ac85e1e73b8fad5641c38151d64d82e4851d. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:34Z), 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/USX9P2335217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa031ddee4dd4ffde841fbc46904c87629f9f0874c99dcb559341f112901e38e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:37Z), 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/USX9P2335220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb061df5c44d39fefc3b7fe7a452d0f6c58c6e8b8ba18f6381f23b117d4f49078. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/USMH92332571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3457f187a686daa9cbbce8e826030bc290e537527cda8534dbf28e5738a02b8. 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/USMH92325317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902831768c5d4ac7fa6829ed7651f785caa812e39ca28cd5f71be7c36642a9a7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:18Z), 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/USMH92332573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792870a6e606f56d027136ba9aa5ddf59d5439ceac1fb833355b392e81a4bcb5. 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/USX9P2335403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b2278aa8fcae33761bb5a23a2eda85f9fc61826ac2b467624a6af0e2ce7e3. 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/USX9P2335405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571dd577592867987537bad02607f5e27a561e9c26e1a7665e4034639627c466. 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/USMH92332462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ede1f51613f17854c5c0cff9082a221150f734b3b2763560146a9733f74efce. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USX9P2335299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddaa8786222331c36e3b91536ceb5cdd3c3beaca4bc49f214a8b514619e3ca2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/INA2W2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde393ad02f36ac743ec1aceb45ce602e26f84ff599dbd40f4d0eb8b81eaa7ca1. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/USX9P2335445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4194ecbf720bfe915ff64608c2b322411837fbf17581307edf9be8e0180f9939. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:10Z), 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/USX9P2335448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1224c6b05e0f1c3fbf02f01cb9ef1cc9a13dbffad995efe49c64b6b88dfa7e40. 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/USX9P2335450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0c50793a38eee7ba6b7861a3d4b146c482ca1bcfebab3f45267172215e1b8e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USMH92332523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadb072240d11e700d93048c8b361f708ec4c4ed6d76ac31e87602b899277493. 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/USMH92332527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7ab4a4259eb04079c68c40332804ad50b59d410e3f754ebfa573326628c32a. 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/USCGJ2483728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aba25571d4fb519450a0a24bbdb90c206d1752547b75c1b2679235ec444c3a4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGJ2483731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3b2d18eabd1aa1c2c915f193ced0b2e9900e3cd5c1f67b751aa7d75d5497cb. 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/USCGJ2483732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89cfff48b40da828977a02fac5c90820355840a4985134c12730da05ba82604. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:07:40Z), 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/INA2W2500019.
I Fought The Good Fight And Finished My Run
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced95a455d06c2a572580cffefc0d6ad2226dc6eacf4a2172c6f0951212234f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:23:21Z), 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/INA2W2501383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf905631dd31e6e120c88175286d2892a0d667cc7f1ce91962a825a49c172354. 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/INA2W2501393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9cb0cb86ee762222675d2604a0cf551542a2ed130c2eace8de1f581462efcb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/INA2W2501392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf871f379fbc5741ccae50a4e449056d0c1bc705c56e94f41949f7c09b26506f5. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:13Z), 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/INA2W2502811.