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 0xe5f2c147d1b346ff4fb2911e18b8c61668787d3888f8f3be20da751224a1c765. 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/d1de7f24-7150-4e13-be72-51ff58a02084.json and https://artists.proofprofile.net/proofs/artist/d1de7f24-7150-4e13-be72-51ff58a02084.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
MTG (EU TACO FORTE NELA DJ 2D DO CF) [DJ PL O PSICOPATA Remix]
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 0x1622bcb93d7116c2acdd2e42b160036733b1d00d3ce9eb2bdd1f91e4b8707f9f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:29:11Z), 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/QZTPX2344297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a9cd8668cf657aa57989e7e388509b70ad5efbf16156fba0c9d4cc69a08de. 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/QZTBC2357672.
Ela Mente pro Pai Dela, Ela Mente pra Mãe Dela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dbec95bce1a13ff3a2a4bcc03bd1c38c12bf9fe8fd2dc04f58ecd8b0b913b7. 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/QZMZ92420171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0362d014da9fb61c917e86d2bb9d496db455c84ea794e8eea8351f27f34f3410. 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/BKJH72400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a040bd9fc5e9abd93a459fb83a5ed777881d89e09322fffae03191723eb69. 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/QZW9M2415854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec25ba8cce043fa246f7cb536d69972e30c44bb73ffe1185525bffd2709b1b4. 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/BKJH72500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc8c528a097610a6af23fd77cd45c56980e4c4d4cd70d9f0c5adf9cdac152a8. 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/BKJH72500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769fc0367a43b26918eac3959c7434c14cbe32350cf0604bf49a748dc7e18107. 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/BKJH72500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af8a7be635c552ad99b1cf0876d3afafc650ed405e864e0df6308971934132b. 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/QZW9L2430610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229823a1de913b9cd9f4fa6624b25d2d7210067c0badcdd6c5aa75b518700292. 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/BKJH72400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a70cf4e7ed7ce7f57099f986333830d3e1434b32a18eac2298dbabcb71a7ae. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZFZ22469563.
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 0xe7e944a385bc8549ca8d6781175f212c0bbede7661441295d90b76095e96d2b3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BKJH72400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b08d2c70a7434f544241b814e2b944b23d76711528833a318ac2488ad1a669c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BKJH72400115.