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 0x7ef10bae1fa3ed6b71417e330a2b9923ff0a118b706be4f35b8f4e8436dc2b7d. 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/0db021c6-7429-4e62-801f-f65a3706406d.json and https://artists.proofprofile.net/proofs/artist/0db021c6-7429-4e62-801f-f65a3706406d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
MANDA FOTO PELADINHA - DJ TIX E DL PL O PSICOPATA
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 0x8a2c3823e56d2ac0e2d838817ebb0b1e97e56de20cf70b1d689abfd4c290391a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZW9M2442298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610541c71077b44fa7602a9ed06cf1c2fa533f1cc5cc6d6305796a9ff1cebc5b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGLS2590399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8670651b45fc781ad83efd727f2b1bb56b2955e80c6f78ccb6777629d892c149. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMZ92562516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5944b6f8fcc45a12340c5480ed8b691a45f13cd7ab2e26ab369060234a2cd7. 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/QZTV32500754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8475a3eb166a6c10d0ef9084ccb5d187237d4943359f8113e86a8d4f1525c8fa. 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/QZTV32500369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076ad2047570fd26257b6474d34c671d342123c0ac6cc0dac54b43dea84c872. 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/QZWV32590964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8bc328a94b920314ce052c51f2fb5698c70c02c418facffc60421121d7b013. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJY2545488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d25b7eb0d1551e51a70d0925ac8ad0ee51297673360c36570c568544d28b592. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJZ2525019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ce806a83abf62717091c8205bf5a0c5b9256cdf9b6e9feb51523d32d50daf4. 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/QZNJY2565416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182faaad1313e8445c28e9596d04a1d14f74d6bf5800b4d9099392f85297be6f. 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/QZNJZ2584563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d8549f0a303abc544da8de010784bd921d2b6f1b3f34b9fe0e54a81ade298b. 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/QZNJZ2524729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb1c36b3779772e1263978999559033805b77166f02d85301a980dd62fa022d. 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/US7VG2549986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5603da02a5f282153dcadccba64828b671dcb29dc0a3740dee1bd95c9c3c42be. 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/QZNJY2441797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f94e659b35f90373abccb4a7ac1875771d5b116d18eed3610f3a3e9402f5d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKZ242500044.