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 0x51078978496381add0929933ef25ab2fd306b0ab29294cc8c264862dc556c005. 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/20f7613a-0cac-4a46-988b-e1027ebacbb8.json and https://artists.proofprofile.net/proofs/artist/20f7613a-0cac-4a46-988b-e1027ebacbb8.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 0x5bf1bcc81107351519f276aa20705d3f37a88539db3df1fcca238ffaf0cad1da. 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/BXULA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb81c2d184e40fb4b5737750b64e013a7db883924d7d6961b2053f68ec0e03d0. 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/BXULA2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274618be3609a336a69110658efa9d28820666c720700bc9f9b6b1043324c7a6. 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/BXULA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ed3e4c4c2167db1fe3467d9625afc4a3279ef8688417e43b983d8f1cfb5d8. 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/BXULA2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e47a6fd5cf4ed75c23f643f33f5382e4f5673203b989264d9d29cf3281bed8. 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/BXULA2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4cf3c93a79d7a7c2344bd7b78f00198c3adf61a9aa33790844eaa3c7dea67b. 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/BXULA2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc97059399d888f98a96e9736896fbb76af47b514ca352fcaacbcbe9f99dcb6. 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/BXULA2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff07a00535565291d7608178e7ddb100a7ce0cde08cf2df5796c055eaf531e7. 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/BXULA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dece4fcf22aeb9e1610b7865355d172ef669b4d208f64ed11c6347f1e7aa4df. 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/BXULA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584913b7b9de53054aa7e4737376b598b2683ce3243255ee96bcc9fb361afab. 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/BXULA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec86342376fe8fbc612239725f5289662fe14c2b46c9f02feb04f886f3138a. 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/BC3JU2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4857aba6ebecad312aaf33d60bbfed011cb56c006ba249217159b3c63a4004. 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/BX08N2300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72fd58d887f2e61b9a858bd05a06313ca0db0f2bc1479328e38a19c8231a63. 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/BCGSB2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88aa44ba02d66cc61d71808da50eb8794c35628134f439c8a58412f5018a84b. 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/BXULA2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a313e716ecb41d817626706a2572ac546caadf8d49b226747ff3d4ad3b70779. 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/BXULA2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6f308dea0c5359b4cab87de013aef2d1d461f457301d25806d8b5bf0f0e1da. 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/BXULA2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e995fafd24b42bd86f1c34e56e1812a93fb8d551cda0320e2918433f41c136c. 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/BXULA2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb75637655e1613f10390410d91026d8ad98b86894d9febcb75988db13bc6e71. 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/BXULA2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3297a245b95f6e0b7f21438543e1412d67baa8a6fc3371dcfaceb5e660e8f51e. 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/BXULA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917bc498dc85cb73f92b5f3dc30a1eb3063a20f116bba8e6b319ff673b48ad3f. 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/QZNJZ2192290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5632c12d768f64f2db2bdb2faeac8fa441191fce1b3baf32a7342f406976793f. 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/QZNJY2147587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd551ccd5805769c7eef12c5595da991967978781dd92ebb2248a4df9a987601. 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/QZHZ62185556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e723d3fb67a38f4a09621853f3f5f28cf3c17eeb2e63df6703dbca61bfb639. 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/QZGLM2128540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc970b319d5505e571b3be57e956ed6b00b7d07691a8326ff93eafe09dd2aa06c. 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/BRY8H2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e398d6a65c160385b811e46928faef4dbc88ba5cfae00bb42ab56d7b64a5ffe. 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/BXZPH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4a9e27294bdac227d6a660c97ea4a31331fe51a5a0d7e06b9809f6608a5d95. 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/BX6Y62400088.