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 0x8694d1fc150f2433ece2913ea67e676fbe2c67cf7549852dc45e9b66b361e9c2. 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/f5575830-10df-4ed3-9fcd-4a335de0acb2.json and https://artists.proofprofile.net/proofs/artist/f5575830-10df-4ed3-9fcd-4a335de0acb2.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 0xa163e2dc556b098a9554663f53348cd83264998eeb5999de403bde6745fcdbb1. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/AUMEV2286285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ceda99fa88fa95d81eb131ffa5f2e92047ce8628c73d589657345c4aa459b. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/AUMEV2286190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07c0e6655cc169c2eb10ba84f192565ffd870dad8e52325b7eb514fd747cab4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUMEV2286193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d3bc83d2ba99f01e6e9496b7c0dd1bc4d681d46edd2e9ef9761d9c8af31704. 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/AUMEV2271926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb2488e0b1662327ebdfd2ef459e0c4e36447da3d7f0740f0809e399c02c8a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/AUMEV2286199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4011d8b8c34d9ab8b7a65db0c3ebd7d23294fe5a80aeb56ade46870137ac62. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/AUMEV2286201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9cf568b8ae2ebed2883a9ace8542335398550ab4bee61fa8008fd6abb97619. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUMEV2286202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ae1ff584fc618e35628bee22f854ef5d3c91ee32b308b0b80f6ffab1cfeae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUMEV2286204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399d9e2204cabd3031e6239eae46a45cf4dca6146606d8cd97f0afb367cb9e52. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/AUMEV2286207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9cc4ba99d9847bf82c12d8b1edac4eba3c6b6f3667f8604b5770fb5ce36cf5. 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/AUMEV2448828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a9cf44c49561df9bac7996d5c2a1d9c53ad2bb02d826c592d4672bcd12d2cf. 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/AUGBT2459501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad6ec2173511c97fac7426e944e4c68a1a048cf6ad92dea88a09424c5af73e2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/AUMEV2512776.
Trying to Feel Something When All I Feel is Nothing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4608019aa7506564b3b7b2889f05d3afdb620513e2bb69bee65e008280265. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/AUMEV2512779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03f122cecc5c5b90d048cc262cdc495c1d3d70d4a91e71e0885254e11053878. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/AUMEV2512783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8845537e1d1b7543990d72acadedcf6dadb8e3b2bad495daa925277455a189c3. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AUMEV2512786.