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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48266868d3fdd3c961e4c50364c576b92e697a8bc24a795db460204a5125704e. 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/dfc98769-37d0-4e23-b616-44fd6c7ed466.json and https://artists.proofprofile.net/proofs/artist/dfc98769-37d0-4e23-b616-44fd6c7ed466.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lo Mejor de Koli Arce y Su Quinteto Imperial
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e8ae9c8d51b177e5df6a3e2fd06af0a175ef17b23a85513d466caf781e0a6. 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/ARHXW2004765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc776b888889324314e98f5208c9265120c0b40ff09bfef0949dfbea8b42cfa14. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARHXW2004767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8c3f00da73767c2d819c1f60004d9d4b81650e5a2a3e0047e7b517ddc9dcff. 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/ARHXW2004780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7493592a966f5c8b03adb3040b389629504340dd0e67ac50ebdc1fe2981758bb. 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/ARHXW2004789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41e451edd05b8d54f535107e99d4587f344b5492c91566294f30f450dac2374. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ARHXW2004892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cf4cf49f7527c99dee84889314576813cb48704c785ed55fd3ecd01b06e62e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARHXW2004893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed66d1ff1febe6ba1d6fa06d9f55906e1e76a0dbb014b48ec6e570547a3f7dbb. 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/ARHXW2004897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9555a37f0e248aa2e6608207907724697bbb165d3dfe7deb1a571806e04bbcc2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ARHXW2004825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5e5ad59c2f97eaa4d6e58ca21142e034befaeeb9563ce0abddda111cceed42. 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/ARHXW2004827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa08e5a8d0c7282b39b51f5777f9dda51c9a408b0c712618ea2f0645914b12b5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ARHXW2004936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bf7c794101c267e8055bf1c9b22b33cd38e1b4d078ec85491a23b7860a47c5. 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/ARHXW2004942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bea323c26f763b24a9d2a6030a5eefec4afca724ad527bdee6c2feee2b14f8. 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/ARHXW2004971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fdabe7c7ca4beac1c840e4c902a7726f6618eb18a726aea7d4b3b8149d4b5e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARHXW2004974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3affc431cb3a84904b0a171f276cab82ac61cc82ccd308a6ae189b6a693143. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ARHXW2005033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9284ea8400b01069e995b25d2db465027057b2efd64d0d158d821005125cf2b4. 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/ARHXW2005053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d357fcc2878397ae853c52c549084b9a8ad1e3cdddd9c8aca35a4675563f13c. 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/ARHXW2005078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5863285f27ed4dc69622455501fc42a38b5135276c40883034aef5bc23858d. 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/ARHXW2005094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b40c294cdb6069a3effce134e129e6adb0bf55644a30ae031ae66e4dacb4d. 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/ARHXW2005156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f58b1b12a3b59e7c04ba2d14f85b1dd61f40f21d701e2cb077836f650b7033b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARHXW2005159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab633027afcb3fc25f2ae0836ceb6abd61e9e19e180f59ed5e64e429b5bf704e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ARHXW2005165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2edef4b0587127d57d1a62b8a9eb5a4bc1fc1a6fa8f1c99879d8ecd03976f3. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/ARHXW2005170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eaa859bdf11d0fd605a89400f552ea32e96ad60a37e3f9fdae2cbad2fc5504. 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/ARHXW2005162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf29ec8691d1bdec53f93fd832f6b5c27dc081cab507ff68b21e24f85312be0c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ARHXW2106013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12920b2e3c85540770c5fad40e7fd73fa9557dc756909090f3cc5bd4fe1571e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM6MZ1847300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0987237e154d2dfd95695be1e115aec3a0055827546fb1db951080cfce89c353. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARG991030727.