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 0xfd4974ba96ff8be832495acb58a1961643bd1daa9dc24cbdda8dd004b43ebb00. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/354004eb-c535-4e28-94ea-dbf189161adc.json and https://artists.proofprofile.net/proofs/artist/354004eb-c535-4e28-94ea-dbf189161adc.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 0x5f467b4bcf326233afdbf9a48a6d445824a6730b7ecea165da73b7970fd4da7d. 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/PLI292200661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6ef6d637025086b9048a22df4aef063c5c86bb6a1dac0f12f543a10f1a58ac. 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/PLI292100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d8efe7b0ab3452d634a4c3754491e523ea8fcf956285deb398358c1a3b66b1. 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/PLI292100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe71b648f4782244d0306dfe1e03ad546b0191de9536dac0217f857d0fca82d8. 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/PLI292100276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef97a15240129864bdedc0e992b33a40dca1b1690c58cdfb2655a10f53cb723. 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/PLI292100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08538bc89ac61f59e13a69ed20a20ec5943971bda8f63e10608febe051fda915. 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/PLI292100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da4eb150a26e378b4d63e5e995896abfe5ed99ae178716c69be605332b7c85a. 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/PLI292100279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8f784f3a7dfe4915c65625189f7578f420ba9f895db7483021a3caa76eeee4. 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/PLI292100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca87b9d9a4d837cfcd071f866d4ab2772ad8ae37eb5589c474875d23162d64f. 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/PLI292100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5271272da65d2cb21389c969f19baebc11e5afbbd0c36a2a08c0a6d2981856. 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/PLI292100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe288d8a989163c5a14b8a3e95178a40c8dafc270d936f2f63d2f79df05281. 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/PLI292100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25674163a7a073edf73963c110b970c44a881a0973c0e8c0f941c1871275256d. 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/PLI292100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4459723cfd0f89c1d508d0781e96f527d431f2a294f07c582b41960456a60033. 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/PLI292100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ac296c8dee985bef8e695f2ddb86987a6119a10ba5b7eeb3d60e73693dcde7. 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/PLI292100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf5b90144b9d9f468d52950a61d7788a1a279f5384a60b810aac7b22de2fea0. 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/PLI292100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6840a566dbb1088188ff54688aa46f77d9c8aa168017f3f0c849b94b570c14. 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/PLI292100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0b67dc2c2fa7d624be5e1a942cbb331d885346f3e6eb5ea9c6923b29de5f5b. 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/PLI292400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b44217fd5364eef6fcd8d76a466ce5ce15c0cc69e418bb91719cc8a7d9c4ad. 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/PLI292200641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2317da3e530a876aa1cdc53948d931a7a33700f26e5703812d1d13e5177c02f. 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/PL70D2200257.