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 0xfc595343ebb5a6662d7b27b110c3c53d4a095b4f061fe2dce8313b82262ad571. 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/cd61484c-7fe1-4eda-a23f-68545ade5459.json and https://artists.proofprofile.net/proofs/artist/cd61484c-7fe1-4eda-a23f-68545ade5459.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 0xc8a4d79bd5c6c6f382d07df6c2f945fc00ab8663da8624a8a7570bab3b670061. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:23:36Z), 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/AUBEC2345692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e0326db8912f463239b90334ca9adc9b70863ae139fff4e91b91e671d1e266. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AUBEC2345693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13beca7266e6aed572c7442e2c310be423fb8b8821f4db64fb803dc35543b862. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:29Z), 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/AUBEC2345690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c8ef44ea8022b37084aec3517e759c4e3b78c146ae911a3f57541a2026bc3c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/AUBEC2345691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dd2261b71ae516778953ba2a143c6d61d66af8f902bdbcc4c119665d95958d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:26:50Z), 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/AUBEC2346174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4809be8f0be25e9c785ff34f05e7c7a61f147318c5952e5b5af32fd801c296a2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:23:26Z), 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/AUBEC2346175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cb40515aa13f7ef2e3904c64b5ee45adbef77814cf8ffc7c1c9d8e36836acb. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUBEC2346176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d27c8616a65bc87fb6a2af34bf4eaff9cb7b8278dd15f485d173eb08540d550. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AUBEC2346173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c09494b55a2044b179b40a9be35e62dbc026a57ceeeb832f958191c920b23. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/AUBEC2346172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb870efe925d2d68495530e95b59af745ff997d99667b55f5970237d525b6d1a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUBEC2346363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773730b31f9891df04333436553adf51e0b9568387b10b04d90360f9ffa4c045. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/AUBEC2346366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc66652712a10c149e4f4c73babf26dd02e65c59e3b1d360b45694cdd77947f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUBEC2346365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c4fc05930b7d86f27f0098806508bb358d4eb27a8845045c2876354513501f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUBEC2346364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90d7a3c4e2ab94f0fa8cab25176a7cdca318b27fe7a8463225e16d1584f92a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AUBEC2346362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85238cff2b787aeded3ccbd6f62c897506a32d2b97ee60e02552403c4c078893. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AUBEC2347647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16605715c1c33d3f48c4008cae8c5a8d7ae43ad280a2ca130fe0b8ed4bcb1f9. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AUBEC2347648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ef1bb3f8b52e20838f245539dc00f63b11c1cdbc02c76b9bfb355a0baec321. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/AUBEC2347650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2b13d046ae6e86857e4b2f7cb2d7bfa63f68a1f70bf7cf29a48610b43c6048. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUBEC2347649.