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 0x35f009efd7a4ecb79452872e7a39f3a54810470a84869c8a5195dc7d927e59b4. 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/50f57c38-68e0-42a4-8695-dd8cfbeb4c45.json and https://artists.proofprofile.net/proofs/artist/50f57c38-68e0-42a4-8695-dd8cfbeb4c45.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 0x80d1f7b10dcedc5ed163b8a85e69cbda6e25eeb1cc3e3af7d8f44958cd274feb. 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/CHF032409156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fbe365a29d381eb91010815773ed47a5ceb6c2d74de97aeb93aff1ec24eb3a. 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/CHF032409157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2676b03f7527326c5068805cdba4393b0a1f648f247f5b1b80919e404ba16190. 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/CHF032409158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ad82723ed9f7e40e240ba3011cca2956786fb7ebe1f915b912a7c683f7a711. 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/CHF032409159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735aaeca6c908c9350171f3f5e82aa6f7818ae48c3b0deb4b9a42930c794bbb1. 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/CHF032409160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe931b911ee6cba12e9a6faffa9a542e067f86ce7b2ae3905b342177288f06dda. 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/CHF032409799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c5ec0d66c0cb5eebb01e5e65d290e7b04ffbb8a66e6338a8a49213d0e36c28. 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/CHF032417221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4880fcef7a85150a186e977948477a057489bda08d8a03c06769f1f84b76ad. 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/CHF032415745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65122e928e8fb23471df00ba7d80e5ad513ed035fe690d5a7a57fbdd2bd840c9. 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/CHF032412986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a7d61f3e9a8c25cf22a0e8807d93096d1cbdd61c87688252fdde70fa96c054. 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/CHF032412505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c620555c95486072859f8b326d7d331f8fe068721abb8eb5a1b331dcb83f8c. 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/CHF032411056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da8e0f95b77f95a43748d1f0dc3b030803fbba199a385985d8d617e85e8ea82. 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/CHF032408836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09fa7db6cb8435c1de699cc871cb3cb2bde74295bc2be6b3a475b8be6c1e9bf. 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/CHF032408157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefc924c8112c892f4d5654ff1d4506fe7a0777866d7699d3b34b5efd2637f4e. 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/INSK92300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2df6464e035bb9a1bd90dedcd58c4dac3742f8d5e0996d1605eca3d70ed9d9. 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/CHF032406886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa68d34c94afff9d1911b045b181273c700e196bacb03dba90a1a61d68682cba. 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/CHF032405716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f85b2dcdb2a26210206a3af7bbc2e76ba723fc0512013a66aa234a1374f2ef. 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/FRX762358839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc001997c9580546b879e4f3d1744eeeb8c3cdef9266bdfa9807378865ba40867. 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/DGA082235390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8fa06b7fb9f80c894ead0e2e24f7a84b3a37480bcd539ab6153dcb93f749fc. 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/INK492200203.