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 0x82f1466c55c74f747a7daf1dcd065e1c058ce30fff20ce572afaceabf581904f. 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/20106375-a7ab-4edd-ab08-7afa074d1c4a.json and https://artists.proofprofile.net/proofs/artist/20106375-a7ab-4edd-ab08-7afa074d1c4a.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 0x9aec0f99f54b8b822883a68c49648c76d92994d0399f251dca724312aa39f819. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZEQU2029142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed378e5e371b8a75c88eee1a329f05a4925b5948d9d93d8a53ac93e844cb80. 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/QZEQU2029183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1700cc62e0870a59d19512f69307144facd88dde0700f6df0b29609f88991ab. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZEQU2033064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211b10166cc36a95d0c2982ba66a9a3f18fdd8173448aee1b5a4513d20bc82a6. 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/QZEQU2033065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e9a643bf27c54536c6ba942dec4047802abce3e337cbdfef5eff7200eec418. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZEQU2033067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fb07b082e6b435c0cf0f47c60dd13d91d55c8a28c679f25e3fed30d58745c1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZEQU2033069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0630581b671f8c6005843f012c90088d65a89684aadc992e3704325dd4909. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:36Z), 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/QZEQU2033070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4988e03fd1a78dd22ff6655ba1005451e8585834677b6e4b917d2a68877ed0a6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZEQU2033071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8adb354bbe7e5e31c1fa6ecdf5d5fe19a96dbce49ae536c6f521b7c1c9dea4e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZEQU2033072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23da694a9276453afa70f0dcbbef18820aafda224dfdf0709e53639141283261. 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/QZEQU2044265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cd41e98ffa2803f31464521a20f1faca770c4ab8e1128a14244a10e599e135. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZEQU2079631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3177906e401044de399ad300427ab597d78645772de2c94099cfa7f14515eaa7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZEQU2104165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5fde1a731168de8de4fe0c106991ec2e8dfc3d8d2b7c6a04c2870ebf740c17. 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/QZEQU2149826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2990a59b380e4fe2cf4312f30df359dc88e062a33c545197762d36978b49d822. 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/QZEQU2149827.
Sequência Senta Senta (Verção Vaquejada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ce5b587005c819414ddd83eef78c82e46262b0ff6f6350c267b02fe511d64. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:31:30Z), 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/ESA112319973.