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 0x2c97783e61f33d82120cca86d5c99e9e49a43abc0c2387ded8b69b13dffe6d30. 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/ab0f7c1f-fe23-4a1d-8c23-d669dffc94cb.json and https://artists.proofprofile.net/proofs/artist/ab0f7c1f-fe23-4a1d-8c23-d669dffc94cb.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 0x9f0c2fb9de544e4250b8ca73176d52075f79b529b5e4db438158f6d361343320. 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/GXBDS2395110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab439c3837e60e1a8a96fa4978460bf8eef23103e025b10e982198a3767e16c. 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/GX3HH2338992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ef5c44fc924470c02ea08af4ecc8a6753bcfc5e971b9b2344e1ed6675c9966. 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/NLYK92300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60c5bcb009cb022e3e46b936d2bb08ce0f4cb86a536c0414064b63311a4b4b. 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/GX89G2405362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd978cde4935e006a1f200b3e57179c2620eb5af9181cca9a5e30e455378f6ee4. 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/GX8LD2450961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae97ea4c24ffe4811ea8f15b7f9dca331691fe14eac050bb6818208444ed96. 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/NLT2H2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30b6bd7ab7b091587c6d8572060d19fe5e6c27e5630e44917932f3b87ea3fb3. 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/GBRKQ2551893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222be762530596f5f4ff1df99df65718ceeed461a42da31d0f7cc5f568f8ae6d. 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/GXFHP2453660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac26f3e49fb50b611610eae14838529323ed872f4a79283958293f86defe9f21. 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/QZZ8A2444696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4964b3c99567436a496495f85248bdf770bc494908795816419f078d9386151a. 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/NLYK92400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca1665c8f5eb0d0f89b6bcdd2e6997c6a1a11d52e4e0a42fd977c93711266ea. 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/GX4R52486954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96026e1cabff521f36dbe1e607de019a094bd82f4bad053fac3ca5cafcf49bc3. 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/QZWDE2436393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f5474f1f7962204ca2b0cb4a08a122c7edbd2dc56bc8567e7ed39a5bce71be. 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/GX3HH2496217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0480379c39e2eb3d963ef2d280c33eb3946567164f199bbe8c4391480aeb90c3. 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/GX38U2414686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51043c0651eacc544a479743f9d275d9ce5e51c03ea438ca37b9463c733ee583. 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/GX38U2401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb827f7f05b68f32a43861e89c7b69b23e54a57c7c30683d9d505a6634f8e066. 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/GX38U2490035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb0b10dc18e8a58e1a7e731e2e324dad1f3061053f677d2986931eb447cb1ae. 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/QM6N22424213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45f78eff99cbc5bc25897b39ca41268918374a949d8b7f4850bc50034ea6cd8. 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/GX8LE2440763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d81a1d0e42f0835539dc773457770ec96471cc8e70ca48fbce0f0da8864601. 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/GBWUL2447515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a8de21aa9844c55c31d1ccf9e54ca6b5f661c718d9f73a0173f0062aa0b3de. 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/GX89G2494652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631895f5f20279323f5a67a6533d2fbb2615233f81dcfea6cbddba37ee1dd5f6. 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/GX89G2433086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf66a144932cf5dd64f653ec61f00973e0747792a09ba5b166d1ff1710663bd. 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/GX89G2490392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9c4f7d1b6be4bc620cf11d08193f4fde6076c6cfb658ea8004de2bb66ab9fb. 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/GX5MY2344191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d5ef4db042c2495ce8f32723277665e604aef986d0ed55626b27ca8c112bc3. 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/GXBDS2362355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba9276773f1b23e84afd267c1b124ee925e3c8eb7241b4b8f3d8a572ce7488c. 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/GX5MY2378939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e3dafe062a0ddb468174f071f46d14d43689012e439389e1a9289f88846df1. 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/GXBDS2324283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3162b3bf836347ed5e2395186b786de034740407f94f5a21e756e872803ce2. 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/GX5MX2327341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5adf75dca39d5ee8c246c1b4bdb86e4ad62e676833644dcf369f23219aff31. 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/NLT2H2300824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe621847c7750470bdd186302cfc24b48aca54bccd353bfd694286a69dfe7d2b. 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/NLT2H2300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a967ffdd86416f1eaec276900760abcea6517d61a0f8fe2b36d1b6b2c732748. 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/NLT2H2400549.