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 0xe0490cc60c396c093b103dadcfcf3f8ed6a20179bab0e9c67743f81c589472c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96351361-80bd-4eb4-9c12-c03d0a645a51.json and https://artists.proofprofile.net/proofs/artist/96351361-80bd-4eb4-9c12-c03d0a645a51.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 0x228dfa11dd2bc19bd05508123eef01793d83bba4828bbed05f2730bd4440eaac. 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/TWCC32201688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa897b589331accfa7e328cfbc56090c3208c8a2217011ef41220bcb7482966. 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/TWA532101868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85252721811abccf87986bf89ec0ac2b1bf1bb25a4f0f5386c9c79b1654238be. 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/TWA472373028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887b33347c6ec085debafa2bbb899b145aae57066fc7cdfe2bf9d2aea61be44. 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/TWA472373030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f52d0e767872ece28be413a02733ff82ff6b932757ebf46109db0a0e73e29. 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/TWA472373031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64ca5aea7bb73b046968f5aa36a989ff8f1ed42eb91e4f0b6577f346e78804f. 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/TWA472373029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c3c52b5d974d3d29b99d6ccf12cff4235c1bb24960163f114d1ebe6a0a013a. 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/TWA472373032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490bec28e32fdbdb7c4e46ce1aabcc20fcae9b2c0a1263608ee4febf2db11c2a. 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/TWA472373034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900231e64b4b2895b72e2e2b44f9dd97d5f33813b8346133be5d0f8d49deef4. 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/TWA472373044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f02eaea446e2e1829ee438e42e5f497c6bf8813c6579694298a55f8f27c15. 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/TWP012120411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba6e6aa01d2d02ca5efbe34f8f67f7df4fcb7dfbb4b73168d6b82a153c302e. 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/TWA532101409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff12d2b45e573d3f3c8afd786272d96ce6dc381b9928f64edbd4466b80db7ef. 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/TWCC32107121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7df3a0e431fe001cafab0c34c0893eda48f33f9159a786f9e50ad6cf1fa406. 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/TWCC32008155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f44ea46000245e119352470546311664a6f98f85e98860f70340a5f30757de9. 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/TWCC31901974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844657c055fd6198f07d24a033be283958ef247f64202d91d633357cfd9adf39. 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/TWHG31800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c38b29b53a0bcc777d1590dfeee37e47bba28772e962bda3f1893e8c54b515. 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/TWHG32000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ae32333911cd923254270e8ec222e3e4b7b66feaecbaf484ed3fc19252778. 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/TWHG32100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff4b9f78717e2ac0ea7d8c76a1f93b44107b00646f1bfe48d335a7eb589697. 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/TWHG32100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf448c7ecb415d081df05be55b19d17187b0968148db5cc1512d7ab5599f307. 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/TWHG32100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85db8a2f6fc0105f56631357b159a2a8339784c124ebbcf3d18b8d3acb778e2. 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/TWU712400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8256ff69b4829a80ca96d2e9da1b3ed1942d2d5e1f3005df9bd9aaa9650fb226. 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/FRX202120359.