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 0x00b75382b14972fe42070227047c06652e1a1a8e79bbeb92e6f57d2b53fbcf40. 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/9564d799-da62-41f4-bb2f-c41e16068128.json and https://artists.proofprofile.net/proofs/artist/9564d799-da62-41f4-bb2f-c41e16068128.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Catalina Dubplate (Boombassbrothers 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 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 0x645c92fc3f83b9b326882c5e36f4eff424de8aec8f0d6d9b614cc83b91f7a9c0. 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/ES18B2100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43dcce5a584d2c61cd614ff022e3054db40ab1ad73bafc54eba19fef17bedc6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES71G2004364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eac7bafaf8fa69123c4f5b3bc04a376cc6228077cbde81e360580c7562db504. 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/ES71G2004365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0bc4fcff4ed846880f5ea3aece6bd94b3bc4b2ffd8c65c941f05c5eff64c9a. 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/ES71G2004366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef37ee9d0ec1cf19afe5004fb9790eaeb1c4b2e1e204cfe956a2348cecbea06. 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/ES71G2004367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553f2b5f5dc452a4073015a19e85223b898952354aaa33e913d4f2ccc458f69f. 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/ES71G2004368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bd5f8bf044910fe051824010cfd733aea343517fb09139d169bface62a9533. 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/ES71G2004375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060ba02d770ec75478d19b9a0bdd94b8d1e5909cd483208546d854ee9acc0185. 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/ES71G2004376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd3e00a795e04cbe8d2cc20c78a39fdceac63dc906ee1fae1ffaa671242e018. 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/ES71G2001836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e693d08a88260993d3122772ce6395d87374db5e0d6a41682839e9905f2abaa. 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/ES71G2001837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab053447550c1a8352ba13baf35c698b3a24ec2aa4563da581a6c9853f8b6ae. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES71G2001839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe810c3c3752443c8fce69c8f26ebc5b3b41ead6ba8213d6550f9b7fea82463. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES71G1642999.
Dub Pistols present Welcome To The Jungle (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78c7d13b493682f6ddaf6600fd1df4cdf08ee7a68b51b96c037ef63ec26c5e7. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBFG92100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fb09e1a375d2eb8864f391c0481c7e8ca1e406a80cf64b50095ef8f214f7f0. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR26V1606503.