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 0x40f1b6f8a96eefb4c1b1f464936455ca8659071a9d5c789f7f22dce2e392ba89. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9c61069-6927-4e5e-abcc-05027f84e4c2.json and https://artists.proofprofile.net/proofs/artist/d9c61069-6927-4e5e-abcc-05027f84e4c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
new normal (original motion picture soundtrack)
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 0x2f5b059c719e556040ad8de91754611803b92823ee23852e44ede5354d9bbbf9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWU2132137.
emerged (live from the national theatre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffed124e912ac89b0d035da25bc0282312970c604419f0c165bc25355ad9b61. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZES92266032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b2f99f5b9908717ac839bd4650f3b54c387947e2b8b39843e71dd5b3adabd6. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/CZE052400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf29fb3105cc4b1d579894f441ad8e773cb0aad93e1d06a8af4c3afd93f9c8fc. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/CZE052400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9846eb2d98cdf976dd82e30433cdb306f41af0b1923724c6066ff83087bdc264. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CZDX02400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc430d1f80667c19dd380e7017892faffe2edfd1622a697b4cc7ead3ce0d60383. 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/HUA612301521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5bd739428526b299b1c38704a60024fcfc4c561b7432cb42ea02271ccbca3. 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/CZAC22410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d6a02a63b8cf16ceecf2763b20e51a66d5ebec15e6ab07040ce385756a4e4b. 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/CZAC22410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b46de73424894a2ce99ed58e55f761db3a80b8a5565791938456c560b7d45a9. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CZAC22410007.
the only way to survive is to take photos (T-club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b4db0ede721f5bfc93a12401b2402494f95bca748ac718a3752d20ff3b9c66. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/CZAC22410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4c388dfa72f350ea95cc50f52be857e1c4c6d1969be587e6e880e32d026c03. 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/CZAC22410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32fb0a490f854b20c9f76406b05dc3f734260b22d6f51a0a92dcc0a3541046b. 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/CZAC22410011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea6a0afa1ece40ea19d8d6fb8cbfc3bc720d816d6977b1a2c0b3ffe8a64c203. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CZAC22410012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d00232fe4e9e20af92f0249436a1a6abb001d0488773e6cc6e50019e0518ba. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CZAC22410013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af65fe20e155109f70df4b57ec94ea5711b8a98f4a165b362569f06f822293. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CZAC22410015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f03634f16e66bd886e7acc8c589160de1c17c04f04494587d4e93c068dcefd. 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/CZAC22410016.