1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa4369c183c45019fc150b62caf3e9ab92042c5889add823eabf0f33ca6ee27da. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f414f124-a286-43be-bc00-473ad46f5a0d.json and https://artists.proofprofile.net/proofs/artist/f414f124-a286-43be-bc00-473ad46f5a0d.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 → block OTSBitcoinBlock must exist at that height 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 0xaba7746604e46acadf3576aa3c6ce230f02ec3f7bce14bbba5ac402cc724782d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2375528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c876890b5a4078cfd3ba548880899be3094c32d173fbe94290b81784964afd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:05Z), 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/QZGLM2446894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbdcbeceeef5071d3278c56eb93f8546403656bbe7ce8a5653d3159e2758a29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZGLS2452982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc893218a239805497a4d7dd8118023f51c4f2f139076a1d27aecc44f8bc10dd1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJZ2415913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55eec007cd04bf85d18d00703ed146c6971d778e68aacdf953d6d9b5570250d. 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/QZNJZ2495942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa378224c8ebee01355d0a762545397b2f239e7261f03259ac7b750c76f790104. 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/QZTPX2438727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed538751af8dff0c36d64e158a7b30908769c7b3df485bf17ebbaa81dad1497. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTVM2464006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1429e529ba7aaf53b0e962d4d64dae3a59aebc158466d10cc58dbe48f4bb2a78. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZW9L2479862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4a93b5f8d0139acd80c9402caa25ff7f17505e022e1cc100b844e0bbda64be. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US7VG2545049.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cf7358e9440d5d3c087c156334e5944122b5d8ce541fc4a98a71217715670. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZN882536303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da2b803475cfa1bf703c201150c501b2aa6d138a0dd4e5c964ff00aafdfa6d3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARQIW2501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf4aec6ae3e689e776d9e4ee15f77c111f9bfc70bba5910c212a94cc297f2c5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARQIW2501485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7bdbfcd369785ba85ae0ad899425627ad95ffb7323bbc9c8b0b27ee653c7cb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARQIW2501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb97fa5745156de16c660a9815498eb8ec5e3e451009987e03082ddc732b99e8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMZ92537763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fc9179a0b71e77b47a9b469382f2589515bb8dfa11b8229a63bfa3f1e2aa8a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMZ92537689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5548192a4bcade901baee89d892e12fd6a5a57d6ac96a556e162f6ceb43e09. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:43Z), 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/USHM82517569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cb4c2c3db82076cbdadc9a974d67b79a565dc8b74b635eec6c71a395b615cc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:11:13Z), 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/USL4Q2514490.