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 0x7469b2577580fd2a083c1c3e26be0d31f123446dea1f70184be69c3a8d25ac84. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5945dd82-44b3-439d-9e1e-e04030a42f2a.json and https://artists.proofprofile.net/proofs/artist/5945dd82-44b3-439d-9e1e-e04030a42f2a.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 0x2fde3f3cca779c35f4164e9baad2e01b947a10918d8a1f4691c7082b2beed2d9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:03Z), 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/QZEQU2053403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d5cae8c74f0f298720265f134d35cdd5c41ffb429ce27c59ccfd2f6c4c931. 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/QZEQU2053418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e688d49941ffc684eaafddbfa05c12472f96b68cc2545dae613a6cf9e7a64b3. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZEQU2053402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68790c526bd8f6e39204c3a5ce9e2026e242dd90701ff4b5b00c2a382ee0e1e8. 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/QZEQU2053405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9747c5478f82f1cbfdf0f6b77153d6f288f0ec2fece9a10fcbb3b971f2672d2c. 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/QZEQU2053406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1749fe62b1c95e76a9512aca1aaa386c71b31fdec46a9fa99d328a1d6a33acb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:29:30Z), 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/QZEQU2053408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1913f8c66a3fdb89adc7de5aae1e55a2aa166a58731740e48a28ba87fb3a1b73. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:38Z), 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/QM3DF2192178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d37c3b5f45d92c65e6f58a677cf49322592e52eebce64288e9c07a7a6cf082d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM3DF2192186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827e27b524dc85060f639950ee253483b4a87a8e24a29d809bc8fd958904ac84. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM3DF2192192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbed259c6a0ffac15e8bbdaa241cb84d6470ea7fa129a56d08ef392bc473eb9b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:02Z), 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/QM3DF2192193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23701d96fb7ec1ada68b89ae5f0d849f51673556c60ea60c07cfbd72d0e606cf. 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/QZEQU2253494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23701d96fb7ec1ada68b89ae5f0d849f51673556c60ea60c07cfbd72d0e606cf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZEQU2253494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a0b1968ef35015d7b6e39144f563c9d69778360fc86a8e530a245f6ba5a42. 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/QZEQU2253847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a3bdbfda859837618c89e2b7d48e098158d58926a23debc9666501dc0d0c55. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZEQU2254246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae862bf5396f8035d7c2e7b16fcfcddfe1fa114ffc1d7fa808bea85941ac599. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:27Z), 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/QZEQU2256061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc955831e2051bced90a83e36131094039fe7e541644985b2cfc5b01c57a7d4. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/ESA112306246.
A Queridinha dos Paredões (Respeite Nossa Historia)