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 0xb205881000920d789845b12765a8d8ec8ca815a897c17976d521e16c20b48eee. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/454fd72b-5c69-45f0-89a9-8d2dfabbd823.json and https://artists.proofprofile.net/proofs/artist/454fd72b-5c69-45f0-89a9-8d2dfabbd823.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 0x8637896b93cd7c387ef96407214a271ec70201b820d4fb6f5bb5005b763e646e. 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/QZZ772459839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c2afe5c79c85dcdbad272b66481b481c85debc02c207f52f719d3528afe2dd. 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/MXA3V2427267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf204b658fa15dec411e7291e2fa3cf5bf28622c04799bb6b1debf12f0ce22840. 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/QZTBB2349207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d816f8b5a5b809969a9ff3134e0318166d63b7bbcdb3af79917ecfa6be2f8c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXA3V2427268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddde537a71bbccfe557bbb86bf3b7927512979e84e0c3c459cd311846e5c4a18. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MXA3V2427269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9544232d490cdd928925d87669487cca6a48895d8d956bc50ea638cb5a7891ff. 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/ZAUM72400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097117978831d055f8dd1e0f8e77b1d61bf1b0f8cf6baed68bf56688c0c10cc7. 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/ZAUM72400950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76aeb265ca301fa823ebcd15c0d2db063bc09d27f9de83e339ff320b832cc5b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SE6QE2061745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d323884f0c9fbd9690f861cf8d737274d76635a1d045af418394f1170c69c3. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/MXA3V2427270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09845a0dce1d43b86ea80cd24242e52766078358d24a6b1c587765b82a7a7996. 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/MXA3V2427271.
Vulela Amaweekend(feat. Leemckrazy) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c1879f0d031e34ccca1ef30cfdac5bc591178d48a4297b1b5e36e508ada53. 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/MXA3V2427272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26a8c72ce27d4b656aa2c433eb07b610cbf71998eb136a2c1238c120278c65. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/MXA3V2427273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e17274dccc6269c24051946a50295513b1535408bb4f6fa0c730859c603d62. 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/MXA3V2427274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f67b7ecc22fa806de92f85a8c2d90220ab69db5e0bc5229c022c96a9478167. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXA3V2427275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c511321bce9bdb8b4a2e0fbaeb3f083a025b77ddffc95e34a812a64bd0e81b0. 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/ZA52S2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b19e9ca240a05f25e01fae897671d6820eb16fa1c5876541c116c8888b9bc8f. 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/ZA82Y2100353.