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 0x6579c77e83d8c3ebc1f74a2d2970e8c965e686d75aca462d7f1fa401653529e7. 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/36c06c23-9856-4daf-8a7a-8fb5489ee913.json and https://artists.proofprofile.net/proofs/artist/36c06c23-9856-4daf-8a7a-8fb5489ee913.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 0xb7a4e0d132b1002e23e6ee7381fa2c458c9c2318c429b12ba9cfcecb3bb56779. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITF251300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34045a1761adf91113463aa2d5a4bdc62cc7964fbc99340482bce44cb953fba5. 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/USHM21366888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9584c8f8ec1f945df9e6287beb918291717d8baf58690c53c24ca036ca5cd88. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USJ3V2086112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49bd0bd6cf70a61ea01d91a279d14a6ba42440c6a15619ceb4260739d015cc4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGJ1487631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ddbc8dc7c633b44b133d4c14209211500e9892af0006e378495b111dff84cd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGJ1487630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9bfca8702246f0d15202a81fc3105c0f11143f70ca2cdd57c7f30cedd95781. 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/TCACG1529920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fab2f052818d945e3dc4a678cce8308c4a841c924547f34aaa9a5a2dd7e81ce. 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/TCACX1703336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766a43dcf956af9b40ab20140d24a0f392efc66ae2382c3aa3dd92414129f899. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCACX1703337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84c9bab258efbfdaf3eb078239054e7312372808770f6af067a67e5309714f8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAED1966147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070fa5b989cae370972bf7680abc1ea6005ffb6fb79526c3b6babb3d4a68b72. 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/QZGLM2193158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bd0cfebd93712db283cafb438aa4bcb71fe68379c331e3b0382fd650d1406c. 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/QZMR82200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d87c858b99fcb5c30aacc4d068d22f55b05c656c533b64eb21d2684d55c73e. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:29:17Z), 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/USLZJ2263066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33044b8b9e34049357832bd282af019426e6208d8b94631abfd6619d214c20f7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTV32220815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5518f4143f64f9cc6d8be965684ba503aa7824d3e31ad0a83fff48abc7f11. 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/QZWDD2294776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf909fac13eb2d9ab44275f6d7b20dd80b555151e181ae5612e0066a5b05737fa. 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/QZMR82200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dea004e2e7ca6f0f16edc9ed17470c65a1fe9f71540ce892e1dd17d834869d. 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/QZMR82501477.
ZAPEROKO La Resistencia Salsera del Callao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29732efe5c80165985fa70315cb4d097967874cbf425a09fe04a6774c49b55ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ52062532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef16f67ca0232885b8faefd697b557202bb7c87df198c22bdf14f3baaf3814. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2318980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b69ffb27b92909bbb3c0613907cae56b99055707e6f8915f7817119ac342fa2. 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/USA2P2223080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1e4b61090e4dae3fa08a8fa271952c13b66ff8fdea31fff680cc2839066a3c. 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/QZFYZ2039434.