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 0x48488c9461e72eeb6220c9470593906d3b295229d8a2f27534b545e052ccdf42. 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/5d8e1dea-4870-48c0-af59-fbf2efa73480.json and https://artists.proofprofile.net/proofs/artist/5d8e1dea-4870-48c0-af59-fbf2efa73480.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 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 0x31bc25bc76dd3e6e831c72d2975148651502c7d69477c6702baf32df964e49c4. 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/QZHNA1981040.
Cercando te [feat.Bravopie] (Original mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7346f05f9c086add322ee877a31deabeda787c66500c3c1ea0494a205a96658. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZES91893187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c7f4787380ff36736e7eff9a4b84aabdc74144ef3e309180250f3afafdc6fa. 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/QZES61983458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962095e86d62d375e305268dc06ab64a3ee6ee93420aaf76c8a67fa894c91439. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZ4JJ1805749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b8c95410554be33a9a29cd166a5ebb8011f523334a65e83f9c486504e5c0fe. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZHNA1990364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fd2db6ca555922b276f26b3492f83c4bd69ecc84339574ea6d3e29be4fa59e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6K2160111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e54ec4f38a9d01c0fddc3ae4443650b5657672a74c1c2a5e9e51c6b8366d6dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6N2233716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d65fd4e8686b305df788a60a5c5c8c0dc0dc20351b574116535d285a7186ba. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZK6N2233717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb338ba0ab2159d20eefbe42a6e99a26b463a4b788d14f1776a78911f446322a3. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZK6N2233719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4322f9d36157250ffdde7adb8cdddf20e635d691da9db17ecaf1ab0404b3ff48. 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/QZK6N2233721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d39e23926a0bfd7043ad76b6c01191ae6f19bf45bbe919c47e17f87c714cb7. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZK6N2233722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6943065846af601a41152a1fc4f5fbe70f5d10802fa1592eb7817f4fe3aae4. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZDA72542071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bbc864e3cbfc94b1ed8e595b12c25ca82bfc0aaabc3dd2b38125e2ff23ff6. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZGWW2125028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51ce03aadb3a5ba3b357efb51ef4cd8b43a0cdf1e777ac4b4a6a8ce0371b74f. 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/QZGWW2125031.