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 0x785394201e8fe6a6429c81e184b3daaae9b2624ff618bd7ada7cf9121adf5642. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84bef073-8a83-40a2-b446-5ca337e2a9f6.json and https://artists.proofprofile.net/proofs/artist/84bef073-8a83-40a2-b446-5ca337e2a9f6.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 0xa0ce49846539bdc9c7faea9156511a1f6e91d1b5a50d17cb31aef0913f0dbaee. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:54Z), 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/SE62M2245714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73126f86058c42f19394f27f3d2e4a292aa6940aef73a7303ace5ddc33f68620. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:47Z), 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/SE62M2245715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752713d16fc7bfc9445fcbf5e921fd0b4c7ea5759a4d18069a5b84b06be6a99d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE62M2245717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4472bf945f721a8bfee1080bb358bc0715e290f867f9d9c83347231a2576d8cf. 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/SE62M2245718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf166786316d9a0ec461a3dd8fbab1c7b511dc3d2901bfb59af3281144d8b619e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:46Z), 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/SE62M2245723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca08a4aeddc54ad766addb9dde03eb0b63fb7e00489d9c1f6befeca80cd371fe. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SE62M2245724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8782849ed1fc8c6ff3d5c5cec124c419303d93608845259143283b9af17e9788. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:14Z), 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/SE62M2245726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffa52d07b12ed988fe5d25b539f5956162c0cf8ac1768b61432ccf52e8c57e1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE62M2245727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f434b964d203b1b66d24eb7ef33f665859302b44346ea94572fa8cca990f7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:25Z), 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/SE62M2245728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8f8bd74ff66b7183d0199b264e401c648514eb2deddd5e80fa3593c39a20b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:01Z), 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/SE62M2245730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bf076291e84e93b1be52e21803154db43cbfc4a4bd8fc9244a02ceaf2b3bfb. 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/SE62M2245731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b54dac93d4030ff26bed766263994d9bdf59a93ee0b1261960e900603d5e9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:31:19Z), 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/SE62M2245732.