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 0x9a9f8fa10c267593a542ee3379a982e17abb17c2cf86aeade445f86d307de812. 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/385d3c67-3d11-45ae-ad44-e5776589e30e.json and https://artists.proofprofile.net/proofs/artist/385d3c67-3d11-45ae-ad44-e5776589e30e.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 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 0x312a9de8d99d03037c29f77f22c1f169705deb132681e06ce199580b5882018e. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/GBMJG2230956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1f66d63ef3bded21932c05ff6676b4ee2a5f343d7d6ea33daa9927b476e727. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBMJG2230965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18bf8673f2208bca3f4b281f71d70416319563b3c16f38fc0df401a29871771. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMJG2230967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca003bb9c4c9c3edbd7ad6869ffb07db4fe7153f4ef0de82219cba6a38751a5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM81833920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99937fb5f96ab04edc3d116df9b968b74b20b034cbf78318962b2233641978d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM81833921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9ccadc48a69a58645abc72a188bdaff5b090785080f8267db9783c96a3ea3. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/USHM81833934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7453e68566a106fb9857a57329855f768b45a0a442d6117c7ad23ffecefc1bfb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/PAVA21200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde29d4a1421e210a2c5e850cbb8d34864df4a34ceed12facc38e083931c094ea. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USHM21307808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd57c613a7c4784ad0a842d023e2527f348c04abd02095b13420403a921d8ba. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USHM21307809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d5bd4104d41b601caa0cba5d688c1660f7238eff98cca846769eecf639993. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21307810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b25338aeb09b04e3cc220dae54d6a2871c40ca91e9f6be0dafcf1d0b51e1f3. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USHM21307811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9815becd1ca12d0ec78feb5641edcfd12622d7140e0e7b8d076cb9239034c63. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21307813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e56d8c9a6916f8ecced8d1c255b7616baeb5ecba28430dfe8db29eac981a0ea. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USHM21307816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66008f74963b4bc296347f6bb0aa9b73a6915b7c83c7fc65663a9c50b3d2a49b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USHM21307819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182432f9544a1611af4975c41204398ff6b6116f661fef17ce8fcf006fb1c898. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM21307821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639030c6faa0dcaf880bb132044c5ea6d9177123f4e495f4809659edf53dd76c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA22433009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2b3f4003487ceef0cd0cc2001d57ab2175a3293e39bd06e66d8fd1c3a79166. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZAPG1855617.
Rabanes And Friends Desde el Teatro Nacional de Panama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6977649fe29e747156e9dce15d11adeb607a0b33503149540800c6205b766905. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US7VG2038743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc06c59f76307dce161502ac5a9211255c4a8e31beb07f0e91c2a4e471618ce. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZHZ32189912.