1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe1ef3f390dce348c0bf06d36d492a58fc6005227505ae62734ad98bb88598187. 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/3cd78630-3b9f-4888-8c86-486a5cfade08.json and https://artists.proofprofile.net/proofs/artist/3cd78630-3b9f-4888-8c86-486a5cfade08.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 → block OTSBitcoinBlock must exist at that height 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 0x31f3fd93babc24f82d9b4bad9947bb177839174e9f36975cf99d8ec05c08dd74. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:57Z), 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/USHM81413908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135265786bae3f97b1ea6d764f4d2978b853994d3e159d50c26636005abf80b7. 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/USHM81413909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461bd2846b832ad99c5c7da1230cc3f8f7eef667046d990292467bfd49aedae2. 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/USHM81413912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e337ddb71e9144b76ce75325ed4089b90d5c5eabe6c55406df9270c309eac13. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:59:20Z), 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/USHM81413913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4bb947e01de885d456291de6397ee156a86f3929220bd5fdd080d14fd474c1. 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/USCGJ1893597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516b5910b53b017880aad1505e664de1e78abe7975761c15c254e51487a46f58. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USCGJ1893600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e1888c872d769d8cd43a80fff8b200e38928eb0dfd6103124c6c25bb5bb58a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCGJ1893601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7375b7521b66e0559846428a677f5090684c9700f72887e4ef875104e50e08a8. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:59:03Z), 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/USL4R2039348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd71ba2013b7bcd1315fc01eb32cd6fd6a3c1d3f3f1b51efa404ce17a61b8e25. 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/USL4R2039351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c874112c6c87ba8775028524bf45cdf9588bdd48b8c0214c6937b77611be3d1. 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/USL4R2039352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26693f04ab4f78b303a2a7e0e7595ec6857d55a6156b27c71ce16860f6997a5d. 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/USL4R2039353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006123a49cdf97a79dc72b0f435a58fd56e436193a838fbf9a1c4a997f19d6b0. 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/MX3742200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0feb2d649f294fbfcfa08988031cd09ab1ad32e19dc0cb1a61be1767e13da5f. 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/MX3742400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b880ef3ae340bc77dafe6137b5d6b951e304434704dfcfc9cb50407e20bb6c4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/MX3742400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7268d5e75b202a6fd353c1115fe5a2f464bb9873f133008a0d486149d1e0c53. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX3742400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1146dfa8faebe688669179ac67079040e1fb06d66a8a50ce9941ad051dccb22b. 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/MX3742400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700a0b88d2be375881458f57e577a64f1a34edffe1fb256bf5fb73ae7c8f4e8. 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/MX3742400095.