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 0xf76f1014d3bcb34989e4f1424612db11f549b39a3f7fc3f64a38509c7ab602a1. 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/0d123605-4447-4565-a01a-4b27cfa6702d.json and https://artists.proofprofile.net/proofs/artist/0d123605-4447-4565-a01a-4b27cfa6702d.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 0xe546b0c259871c3b61ef2ef91cc731db2af2847123cf626d51a99962c5b9427f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE3GO2311901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a75e4db5c6d49ca8c94020d277d1669a7ee3184c3b39c78815f233688756f23. 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/SE3GO2213601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cf2cc7bbc00c635b93ff6622486b77cebba71262c80cf1ae07b2910233fa1e. 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/SE3GO2209701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb5300c69ac48c8e0b1d5440615baf3017ba3bf13df9ddcd7b44ad0170a968f. 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/SE3GO2209601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435e7b89e707abc2ccefb6943c058b3263e35472874bcc32d8879b0e1021b8f7. 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/SE3GO2209501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2108ba1aca3f3adf47e05797e3d49de6326f5d29e17d99a43a974e98b8c242b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE3GO2207601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d4bec0457bc9454b0b2ed7e5f62320f4a399a8c1dc47dd6ddd15c03e25fd05. 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/SE3GO2207201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6e306a743abf8711f0b392ee4a4e724b29325cdc576c494a58af4e481ff285. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE3GO2204601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aad2351a7fa335ad46fdc48adf1ca19d89fe93b3f9ec29d78fb5b5ed192feb. 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/SE3GO2202801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098c94432f58bc5701d1bd47c743322ef636ddcdd35c0eae47c0f3be86a8e761. 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/SE3GO2201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131ba4a7ae4215324a05ea829a6576d20a9328710be6298608e2f40aeab22dd2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE3GO2200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1288df55cd8317a8ae170159ad06bc029b6afe3a5dab5aeb730b7db987da1c32. 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/SE3GO2123801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a8ca2570d731cf8a238c183b779d9ae7b14662273b79456ce9eec15cdbe541. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE3GO2123101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33b5b425fa1f3b97ebafc5570900813fd2e4304c16b89cf34feafd1f95e91d3. 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/SE3GO2123001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514870214d4debfdc1ae7caa7dea05034cca393484a97fcd0ef285f546c61de5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE3GO2122801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aae8eb90d8c89c52b5635c7ab364e80be8cda85242437f4f4a6d26ffd1c863. 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/SE3GO2122401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442aeceb2207cfd12a89f4e86b8b30852d0f97ba9081c97e2c355c67975fe46c. 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/SE3GO2122101.