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 0xdf9462c5c05d1a8ae01883ee444fb0c300495ebc21e4b547c725da62bb06c357. 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/87b545ed-4aa1-4422-b51a-f5ffdecb7548.json and https://artists.proofprofile.net/proofs/artist/87b545ed-4aa1-4422-b51a-f5ffdecb7548.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 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 0x9f55526249d07f92b09258f1d3cfca3ce2c1a3441b3e5f4de6ede506e46b0be1. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/FR9W11412233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb434b567705152c2dbc7fde949c942e51754c3dcc4c24ceed8b819b39e338a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR9W11520680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457805937d93e604b7f1e746121a0b4cfa2e7af03686e689a2e4b28670fd7d67. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W11801298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526f963b8f2f6b79ce4185d24e2ceb5d4833680e04e29fdc3f9e35d53a715500. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR9W11801299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fb16e7a052b5ce51529dbff74b0b6ff85cfe75fb330dc8bee0cdd678bf8373. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR9W11801302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51287e9a2f9cefd5baa55d23e4068ad98936debb4ef3a9825e156b3a79f9ed19. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FR9W11801303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9144d0eda5f90173ba79acefcf610346ad0fb3a05b0cf14a839abe63f0706e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR9W11801304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b927b79f33444bd44bc43041a6d2ac978dd1f6b327de08b56687c987688319. 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/FR9W11801305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad82ff1b01bf2667b31cba4f470282d8b7731bc9ea3b90a9d524cde11fa347c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZ5FN1889802.
There is no Calm Before the Storm - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328d2605283606022f6c3da80867e3a7505b1910056dc0d00e2c1625b8bdd825. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ5FN1889804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00627120a356b108eaa71f65f1c5dd04724391ff0f2b2175b009e34bc135a29. 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/FR9W11817281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d5c53975c97092c1649bdc275f6cc7287ffcc03f87c1ea11a93d1b594b8c2. 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/GBRKQ2120977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da6d0818b4cd1bcab961773bbc153c6a4145adfa5d938c697b3c3ab5acbd1c2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR9W12146782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f7a9ade4bc70a75845d33aa3e749de6a649e24ec22fe915c28b1929b37c459. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR9W12146785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b2eefcc79e1aa84c3c1741e557b40bd92386ac2d77f81c543c42d134a42769. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12146786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cc79401c63544ad75cd5698b4f69a286921ef8dfa319bc5471638d58ced665. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FR9W12146787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca6ac8a1d76c487383bff79668239aa913b92e51392aab093a3040e28fba3ad. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W12146789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17b289153d0acee788ad3c242b95cfc0bf91c8584b7086274337afe18bf34ea. 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/QZWDD2418841.