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 0xf812c9c929972d4d0663abac65797fff5680a2c16683636f49321da3a9b661cb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10136517-e0d4-428f-8e5d-3593eda6654e.json and https://artists.proofprofile.net/proofs/artist/10136517-e0d4-428f-8e5d-3593eda6654e.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 0x4f29bb7b24721f3236ff5862a3e2574182b0f9d059a46f19c910c18b41986efc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXKG22302344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409c2b3283b6db1bdd9d779b9e8cb293ff2b8524e6b98920aaf975f56e10bfbe. 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/BXKG22301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ecf4c0bb1bcbd3ad019922d31d1142af5f8d0483c74414dfa0f364eab7acb6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKG22300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a699dc531d7cf2491f9044c6ebc53db0a3b62746862949a8ca51243759178f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKG22401929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baebfcbd34f06ffbd31ed690760a55763eaaefa900a9ddb9469edfa1ee24682. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJW2456760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9d2c1e574cd4a704ccc810bba1f2d99940e9c826b0415b25b13008631f2ea9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKDFK2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd560a452649d05761852a4cf1727b65a0581e2ac7e11764169c33209e6ad8f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKDFK2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4df8041486ad69852ca691ad5d6f97d8dfd9a67ea403981a4d654c4462a95a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXKG22302568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ca4b9e9a7b0bf61df45553570657454ccf6db5013251e1e5b69df2d08f9db9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXKG22302571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6554e4fed64f8fdfafc8a15d7c2a71bfd73357dd26d6ec751097359cef76104c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXKG22302572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ded3e906a25e3f2982be8bdf7bce86035cced9baf7ca2106e2004f0f31b2c4f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKG22302573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa61f4aa407faaa36a1ab4919fe4147dc524b33f6b75b8b0f95dbff03a00470b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXKG22302576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733bc1551df6e1761d743354adc807cc063c99ac8f523de564ad24558f4421d8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXKG22302578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f822cfebc941e085bb59740508a1e5da4097a71b68716a31e8eb124511ad60. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2440639.