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 0x94474009794cb704e1041cb15e3b362caf449f711a536edf35408f5752dd0646. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1d9bd0f-ad29-4218-b3d2-8677e3e865a6.json and https://artists.proofprofile.net/proofs/artist/f1d9bd0f-ad29-4218-b3d2-8677e3e865a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live Happily While Waiting For Death (The Complete Demo Collection 1986-1990)
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 0x20e9a75697394b6118d3fa3c3768af4cf3f2cd1cdf0679dced33f50f2ecd3788. 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/BEC262540501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe95885cc2b41432928371d2d5b68988c356e30bd1d345665b3ca6323a5031f9. 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/BEC262540502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a91a3261d48c55f65723f1fcfd1016d795c22420c50502863f0bc2f36054e5d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BEC262540503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc775f972aaebb0de4244117517d63e54cb8def7fbe3510a0b5a5724d1a27f8c. 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/BEC262540504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be458ad1915f7c8414abcaca0600f8900551cf26821e25b1bb4f1dad09c54ad. 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/BEC262540505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035abe19822894953ad41606d1f02c1df44d28e0d69281496a5d86b0a0d02d6. 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/BEC262540506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc342cab9fb9c722ab2adef5691bbbceb3af180c83227d8240dd18d5376275fa. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BEC262540507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd14f5dbc10e7a96f92d9ec0d48225b9235133182c4d7f5da80fe51e96666f6. 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/BEC262540508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6bbda43682951e1ccbac9b0e4b53c5dce84df7425a9f74c9174dde5285d6dc. 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/BEC262540509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd568f40c852cb851b1f3d7361cadfc66abacbc7aefe4d34cd2c32aa85bc8c76e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BEC262540510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3918e859c70b8739722ef62649fb9f2de8cad3f96e2ce2baf9c0f6d56e31f6a0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEC262540511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15be695f1ac5e5933c35ca3a0a5d9eb865c11286b729a08bac37c0d4d7c373b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BEC262540512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667491ad0a0e70f84f0e2d9577d2fb44999e83d5079d8d4d1ac0c8e82ff4c0ac. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BEC262540513.