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 0x30b441b40f8b36adb582d02e36cd994dc1f456de30b4062f5ff48a1dd220ebab. 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/4b93c880-d4d6-4eee-81e8-271cf3290bc5.json and https://artists.proofprofile.net/proofs/artist/4b93c880-d4d6-4eee-81e8-271cf3290bc5.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 0x3bf641720543a39cfe3708f71f59044ee168ea79cab3e2f3d73e4d308983efdc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPK2052727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ff5af181895e4ffbb163bca2ab095e044c72a74271d88422aa601d3459bf0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCJPK2052701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8c29097663d0848a3cb5658812ebc16fe0067fc98eb8acc980daa808897840. 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/TCJPK2052711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ba472135f312aa5215541a2b8f2995a25062f46bfc3b0c68b1e20459f9d72c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCJPK2052723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d92ec5d49d66568d82129b49c0a1b5a12969388e5c7e684d1c4a56a49595a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPK2051035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb549af30101a7c27968dbe6e68b4dd36f1c54bd3c6ded89c915a4c3a28df40b1. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCJPK2083062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe405ac2e8f4b07c7373a235979acab7718bd2ab454ecc5bfbb964d93011e3a. 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/TCJPK2083047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb549af30101a7c27968dbe6e68b4dd36f1c54bd3c6ded89c915a4c3a28df40b1. 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/TCJPK2083062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c257a0e1a1e489905f6c60e28c4c13248cb10f04cc362629a1190309dc283. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPK2083065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba0b49c10fb4dcede953c72b2406da2b07904c076ae3d9b9d6abfbd79cb0d8a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPK2083066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f637f138930498688a86781d5b768b2e146876972f910f3c1854c76bc13aa. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:32Z), 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/TCJPM2049398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bf2b88ad42043d8b62d8ef2be6523f07d060f86f88491e8f167a36a8458f34. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPM2074095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ab68905d875d3906fa221ba8d97490febeec4281a2c21d67f7edd841fbb8f4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCJPV2304098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaaff12bc5e08cf95479e48199f57fed3810b4b9d3c1a7f65d363053eb97ea9. 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/TCJPB2430263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfb3a187678fd9dbf581895e1e911bb180d027a5da1c8408f071c733874807b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPB2430265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8761bf645503ea2ead3ca8dca5163975da535e510cb8f050a4ee58028e8de69e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPJ2572100.