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 0x36aad2c95a030cafc4249d699b1d58d7c759c068add17400e5ae56b6b992d454. 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/8eafad26-597c-4ba6-a271-29db93d99caf.json and https://artists.proofprofile.net/proofs/artist/8eafad26-597c-4ba6-a271-29db93d99caf.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 0x92e201f338eecc8e41516bf0e8c8fb712542823e6b4ebfad861a5c82c31a8b11. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BKA7Y2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ed762e63ed609e523538e5ffadccc39386d0538f834ba38a9cfe46f64e157. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCCWF2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d0c6503df5baaba3b5505cd0521d15104795fa3a465047f4f98e8dc5744e5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2441484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036965ceb4caeec03dc99505710be2bda25ee4093fb1b14e81a13d4221d0c562. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCCWF2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa10d72fbb8d3794d410cc3b66ea75c70e77713f7dba78630342c871b910b4e. 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/BCCWF2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeda5ddb0bc5f2d9a7509730ff0974713c6b5824fa9b334d2e037db38872bd1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCCWF2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e1de4c46135bdbd950d7d27f3d422f04c61a7b777ac181948feaf91db14f1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCCWF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e44197ac03919b18bb57f2228b039091010bf936cf1031ff6f07563f129b8dd. 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/BCCWF2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb05c3e61988fbad4ade0b778bf286666be2a7b0c8a786652082a3776514668. 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/BCCWF2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264ae82426d729f0d2caf786eae22f35a40dc91dafad364f77f9dac772ccb219. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXHZ02200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd082c7c77097d67cc46cee8d561eb56927e5ed69e715c24a5ed1c7b9527c93f8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXTB12100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a91de8a09de7bf860371ea6b6af121cd1da2f77d8b43ce5d289c102594898ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXTB12000194.
Geração Fazendinha: Esquema Na Fazendinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc5194861f61027341b4f775d1fb3118bd936eda2a4b00eabe3e5a415ab6452. 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/BRWMB2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c363ca9c2f28ce3bd59d30eac518504411beb0c519b1fcdfbdd227f46378d4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXD7G2280622.