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 0x3804a25af30806d35612811d3972946b5a61e60425003fa6417cf047d895d57c. 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/872a6f96-db66-45fa-969c-d2405b78da8c.json and https://artists.proofprofile.net/proofs/artist/872a6f96-db66-45fa-969c-d2405b78da8c.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 0x4c01910af48073efcb498fcbe3bbc8a66dad20484568d1794ce6a8e7f72adccb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEKF21900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbdcee50d1ed643f01da10621272673d79e6fd9a4f01f4d8cbf80d259e45448. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872143128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52e2b837076b7720ab0e7441de43b07987fad466f6df7eeb3b204471c6f3f6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812530956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d3e96f1a7305681dc8d5f96df3fecf9cbc082f77fc6f041294f44e7ba4265. 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/DEKF21801848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200264e5bc32d80f1172719be19d67da04fbb972ab2de33d274a141c01dfd43d. 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/DEZC62386220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2746c2c21abf71555cead815d91b69565fbd17ba2619f391afca585435e29c21. 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/DEKF22100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258fb1bbf57f8fccd862cafeefa0480312c49ffc146ad00487c6122ce9d8b0c. 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/DEVY22000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a7f8e964cf826ed0406fb85da588005d99aa9a0e07fe3e5b81819dc03cbc3. 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/CH7812420623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1cef5cdf15065fcafbc3a7df2fb80f050bf6b80e0600c2cb3e7144f25b25ae. 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/CH7812425199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd9db1695db837e1387e91fa89525ed1173fc388d89d0c224ed23c1d3ccd823. 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/CH7812528297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb972fa8a63d47a13eefcd4b9ef70240d24b2bc199ae2600956b9e4d58e99d. 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/CH7812425406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d864911083075d0d5617d79da12e451033fb2ebfaaf80acf2f563b465b60487. 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/CH7812423027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72812a47a327852e5f6f553a31fbcb40d27e0463cba461bf04ea1d337adf855. 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/CH7812421317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd9db1695db837e1387e91fa89525ed1173fc388d89d0c224ed23c1d3ccd823. 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/CH7812528297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d3e96f1a7305681dc8d5f96df3fecf9cbc082f77fc6f041294f44e7ba4265. 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/DEKF21801848.