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 0x065e6b9e2f9cd489d4bfebe889237d5bb3075b17efa5398ee56a23f41cf1b828. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e170af-5cc1-460b-8fd0-31087c300b02.json and https://artists.proofprofile.net/proofs/artist/34e170af-5cc1-460b-8fd0-31087c300b02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Water Rats No Estúdio Showlivre, Vol. 2 (Ao Vivo)
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 0x5df2c69d53f085d3fb5a08e678223d74b508c2057263a93cf16e52dab6c19edb. 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/BRXNZ2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c4e9aa58046a5631435a5dea5bffe8260aba946a119c481e2f80593c9ae305. 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/BRXNZ2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae727aad6b3afd77a1f6053bac5877b424084cdf7dd2d761b1ede12ffe15ee. 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/BRXNZ2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad858a3e6e608eac65e78ceb6a1a530a32cb20b73ea8d1b26693c0ba3c655d4. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/BRXNZ1700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5559b895ce140c9c1f0cea177785cf8a0c777028f213a4000f02c5b2f4ab753a. 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/US7VG1458108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c41148606917cf54990cfb6f13d4e35bd2c1187a60920211e8113f7a90bf1d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US7VG1458110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafa37d8fd8c298ee3b5752311cd07868cf64779ccd8b27637c5f62d2c7bc56e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US7VG1458112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a746ebca233a9f18c38efdc959c8974d5a7440a88e2234448e26b743c8fa37. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US7VG1458114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe01b317a2ecc3c7df0c6e819df73020b232bd6866289420c9749c3a83e6692. 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/US7VG1634370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b1e0e114f157a978400c4f6bf9605f7af6e51c662333e74d6a153092b9c1ac. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BXDFR1700051.
Water Rats & Magaly Fields: Processive Generation