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 0xad6ec8a5882d685b7b200660028106db5fe71f26fc279f9f27235c3035a1e987. 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/7d7f0190-4d20-4110-93a4-12780d7bbe1c.json and https://artists.proofprofile.net/proofs/artist/7d7f0190-4d20-4110-93a4-12780d7bbe1c.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 0x91304365fc2fdfd02315e3c80f4e1be418f9419872f083bbd79025817ef2d97f. 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/COAF42392128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ac26b829013625980dd923e1c4f54f8cfbfc110951a10706dc60021fa79ea. 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/COAF42390999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c9f0619b9fea360875a22627ecd103b4e22b2ddb79ff8c03e08ef3e49a02b3. 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/COAF42390912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d299f41e9f4b9f9cd50f9b1ef81a6fcd0c9ad03e65d45fdfd92463e9f1d22a8. 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/QZGLM2256452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1146525a9bd6ae5069798a4dd617cc07c521baf0f9babfed9e6483910857e7. 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/COAF42391082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19ab7fba3d3388381dd956778490854b2fc6717ccdbf10a4bdd554a7e05a5cd. 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/QZNJX2141998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0e04c21f694f38ead5c5db0d5c808b32ab9aa49e8c738286dfd7a860dbbbf1. 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/QZW9L2254541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d99b5897a9fbe4c9d60475716575396bd73813c3c4f928edc2029fc2928c815. 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/QZZ8A2383982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb16a65a6e4251cff4df0737d3dce8a4bf672c07f52ed7f7908fc3ed971265. 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/QZQAY2258992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc7e8472b3feeb198f79429997f624f6928e660e8ee736aa3f1bca6100dccb. 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/COAF42494993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e1c2046b02d4b077c26b1b818d992fa4141f4ad5a787992e281fb75f685a36. 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/COAF42493795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecded82ca3336d196c6763f1113896cd81d492bcf0a88d3e54a2fa94dba2e245. 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/COAF42494994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96e17f8c5893faa8ff71afb078c7d00766f47180f5a160960c59d26c7c5f78d. 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/COAF42494729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade53b4dcf968ec0aad2fd628a00b16f00cdefd919609acaf987dfc851c31562. 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/COAF42495104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05db05eedfe66f99e4b112391724756af891fb8ef177b6067a93fc28ac6aad7c. 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/COAF42493535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdbc0acbc00cd6ae93b02584351d7c4a69ad428cd8cb59ad52fb9c7da22b6eb. 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/COAF42492167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d9e0be431511d8e958e9d98bfbf59dd81f0ee51cea93260b45e3b65e375806. 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/COAF42392581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ac26b829013625980dd923e1c4f54f8cfbfc110951a10706dc60021fa79ea. 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/COAF42390999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c5bb224ad90f2979b13ac02d8ce4e21915c700314856c37d80d89d03abfc68. 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/COAF42290041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544e9e0fa1c71923e329007d8a06182d4600da51f4f3e49af13c12625aa459e. 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/ESA011961296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02e24a21dc5f8fae464e3ec1dc86b05bf994342303c82b0e5701d7c4b93d49f. 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/QZTLA2423345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbec76309405573e713276897370301af1830dac3144dad07482174274731462. 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/US7VG2391468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59e9b7d6f2517dcd10fcfb36e517e758942644951b40683cfb2a686fcfbd813. 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/QZQAY2131978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3fae067e7b46d163679bf94f3c181b96a13b05a11ddccd18402b246e814cc7. 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/QZNJW2258924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707582bca3a1e57900949c7e3eb202e5a6b811a3e958898d339f104899cb22cc. 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/QZNJY2243737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacac30353a03cc52fb77fb3822cb5400989ed6eee163f6a28a34c4b2640008cb. 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/COAF42390511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07705b9e0a58d95e291ea906a45a614701c85bc1240f39193dcd0c5fd2c60a6. 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/US7VG2252318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd1a2ee61bec7ba92143b3a4a020bc549c1dc77c7161ac733e27dd1541420e. 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/QZQAY2497552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92348913a7e1e5971d0d2a63c81126fbace094473f938340ee2f9c7a404db219. 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/QM6N22455463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450f5dc54843fd3fbab6eeb183d78a3c68e661b5e66d876ecbcbafc3bb5663b. 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/COAF42491931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db361a863bac6e02af937d8856f428c09cc113e52daac91f281310e12f47550. 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/QZQAY2481333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdbc8067e5d7027f3adbe9789d24cf0f199b827eae3c124ad2777e0065fce2f. 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/QZW9L2378797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1195dbdf1d05e16fcc9a113cfa3ed6d0e3164fa00d01908d358b32336e7e0f. 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/SE6SA2178741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133203c5121b42e6b933379261a1b0a1be84d51dacc2363c042f3db853e7b376. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZQAY2163305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bf72b626130875e934e65903a8394fd703d0c00b4057e2daa3165718d07c43. 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/QZTLA2475793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fdf9d4bdee9f594deca7122dc223454f1f65835ffa1a54d55eefb1b51aba19. 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/QZS7J2556823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c14fbd863d145b7a895d879eed16685b24b20e57f454c5c0712ff426259ddb. 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/GBWUL2368599.