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 0xe3dff5215ed412f678b9f69948077c797932650c4f0195008708b4779db519b7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df17c1e4-cba5-4e42-b067-c725108e3fee.json and https://artists.proofprofile.net/proofs/artist/df17c1e4-cba5-4e42-b067-c725108e3fee.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928aeff176519ffe48eb0feb5465097a5d2fa7c221ad71a6a01431d576318bc9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:50Z), 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/GBSMU0105382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb396978afa0a99e1ac88a6520ae90950796798d4f8af35fb4079c76688f97a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBSMU0105383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109fdf2e0cbd181aca26fe06e467884bf1a9281d5d02c113a2df984a6baff29. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBSMU0105384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b66496b6c2e56445e72d6d3afe90176bcce8b506f089a15f3aa67218f197181. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU0105385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5da3ef207b8462eadbcf97bca662adb66d21e6324c10f2640721aac0cf933e4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBSMU0105386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f6cd3bd07209d3b1ebe95ad14effb6dca88deb79fe51a1fe9aa109bf43131. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX38U2315197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888228fc784852b40e57f68dc18296f4be88f1c34f679aec95e4ecab2277f23f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:45Z), 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/GX38U2317890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1615d7c196729f304979e4eb9de40abb6763df63da1371f939d6c8337dc9e4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX38U2331537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec6193e761313027e753fbbe1979d1eaffab8734c8aa2a244a97ffba454cc52. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX38U2375650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4f891eab73ab323202ac1380a752a33ac5d227ad2b043b7efea6588759a56f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX38U2340098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5738f65fcc3992ea7e15b539489bf78a96a97b52b6a790d8896049d5390949. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:23Z), 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/GX38U2332142.