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 0xd83c6f09103680664df5e7ce78236ce6697043503983a8918cc3488cb4edd1b0. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7886a2c-6bf7-4d53-b570-02a54dc33e83.json and https://artists.proofprofile.net/proofs/artist/a7886a2c-6bf7-4d53-b570-02a54dc33e83.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 0x2be5c5dc1950b3334de22444a277e3571c7ca6689dca17797b955fac797e5544. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW250301122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba9045a33fd2a4a891b933ef04d1a0111c45008f16667fe6f7dcb6a69ef07b1. 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/DEW250301139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba3bc159dfad7ebfe19ef8f6d2395b45faaac3220135808e830365833e41716. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW250301148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1da48835a650bfcec35284c8d94cd262611dd278434ebc7a49cef47f27568b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW250501208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89abafd4b330dd4efba4b503736df0f981cf9493c57b8cd8a0b730acb871b0db. 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/DEW250401173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f26db71b2c3a7d38312ae013b9a3653e878da9a34ac99592dfbb65208b14662. 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/DEW250401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19fa90fad4d33e96005d21fdc83824ad3475d835b971d01acfe57af14235240. 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/DEW250301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501364aa01292397b05282c5931afacb92add68bc51bfdc5bf1f5f8a3a46c564. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW250301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dec976cdfd1e27177b2c902a447157e4588e14c8398456b865750f5d0e59ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW250301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba9045a33fd2a4a891b933ef04d1a0111c45008f16667fe6f7dcb6a69ef07b1. 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/DEW250301139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853889ccee9d20959e1ddf6c5206d7b16339be6e0f63c88ccad99a62d730a788. 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/USHM81417439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0b5412bb3528e459b5edcb60b4d57fe30d62969457ccdb1cc3b0e496f99b00. 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/USHM81417440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187c9fcd6aed105c6ea91c8c59bbd7f678039bbea6579559accc2bebe8955ea2. 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/USHM81417441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f21b6a39b8d962fac50d0d88fdf4ec97bf19d32d330e9780836dda85ce6631c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM81417442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c77bb91bd625927468b147e90b108ecae5d8819aa655848866624f934f3832b. 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/USHM81417443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f90911e10258b202a5c15e22999638bd2da4428454d208d71d11e988b52470. 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/USHM81417444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751636022980c98b0536ee543d130de630bce76a49ea7b2710a5c702723d92ab. 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/USHM81417445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004021dfb3d8754e1999b46d134e5881ad5b36f0b082fc0b794d5432a40e527e. 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/USHM81417446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ff4247751fd4bff13a41cbedeaa7703c55b7da76bd25460698d4dbcd2d23bc. 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/USHM81417448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fe053c1d078076701976e9b4e4ee796257d16d5d5009539752f0c66698fab6. 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/USHM81417449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538d5d8c46cfd6d6fa483ea576c7b290be4e845e4ec7d2257ea5921ecc4f657. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM81417450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891077bc8301326a83ba7d13700e9d419417638c2994ffdcf3bcf7d0831124ca. 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/USHM81417452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330a975150dc5d7c5110b11c31f4dfd3c65dfd0ad01cd370bf5ad5c168aad6ad. 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/USHM81417453.