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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159ef15ac330ea5307b05dcdfb160f449c70dc5b4741c25901bd35972e256f0. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f4ef458-6bb7-43f6-9151-37bcc7249c0b.json and https://artists.proofprofile.net/proofs/artist/0f4ef458-6bb7-43f6-9151-37bcc7249c0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Colmena (feat. B.Yella, BabbyBubba & Joven Fresquito)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8f731a76f023f9376c066f624c23f70e42ab4cea5777a0c99ee46871cdbc2d. 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/BK4DA2405196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eb0d50b9842164bfe6044309264bd8c5542363889660fa31b3e080753938cc. 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/SE6HN2384756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d33d58ab83aaf09ace6674b4da77d974786d1e02663685d956a24ca5971cc4c. 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/QZNWT2328386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3e4d8e51a99a1ecd7999e3a03f91b5772ace5460a56238ef73f53b7f89def. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZEB2457081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6830f54c4e7370f7a18af9cb1eb716534518b6c0dd8e71fecbcac894545006. 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/QZZEB2457089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ba290ee3468f8c59f167aa7682012b81aa8d6158282ced6e692a6b1a275e4d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZEB2457085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0387f104d3968299c48292758af8b231f84044b55f56c8e115ec1fc0a05bfea1. 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/QZ5FN2523288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de51f19e8859c7b2a0ad541b50fdb133de87b37ff11028533c9c77283f5dc09. 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/QZTVM2484730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199a3cc66ebc2a4220a817376fb2f1678140a8f52fe3f2818b9a61e128f39063. 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/QZTVM2484731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556d3b397dd7722936584606723c7fe01f30fbf308bc631bb457283ccc07634b. 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/QZTVM2484732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2915ecfae7b9d6fb3eef4dc7806fe1f82e378506be3ce25e001195c9ee4db7. 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/QZTVM2484733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b4f64d98721f5022da221b061c4fa5a166584021daf1bd1e51b4f9a9bcc38. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:10:32Z), 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/QZTVM2484734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0535ea82e3a58a54ae07152adb5f19d77f5dafbb8cbd3567b55c2324e4728713. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZTVM2484735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bae33fb722897a7fe59579f6c1a1fc6fe361e0cc895b164e37578a029727317. 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/QZTVM2484736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4e522ea4d55dc9461778a4a4efb89c4ff57f1d27830cff68fd2ed8740cf86. 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/QZTVM2484737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dd01be23d1c1fd9179b0ec002e4dcfedd96404c527373d1819f2e702d6634e. 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/QZTVM2484738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf72c07941217da20f8cf86541edac1d6426016e4ff75c82a8fae355f167610. 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/BK4DA2463100.