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 0xd39bc34996d33cf8eb47f0c5682c08f42f349b9db4db75c2120c13a2f2d67590. 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/5c23bfbe-7a94-4ecb-b98b-18654bacb5e3.json and https://artists.proofprofile.net/proofs/artist/5c23bfbe-7a94-4ecb-b98b-18654bacb5e3.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 0x1ade96fd6f4406f061cfbb895765c64f933929cf28dbb6d520845f0c2487cfac. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:17:32Z), 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/GBLFP2006015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cd6ab8143afa767f499448ddf50e02769fe32c248cbe18c24d55744394cca7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBLFP2006016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f091ffd0b4f28ecc26cc7a32e34b4cfd285a7b8ff95890e385c3247ef141c3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBLFP2006019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955fd6675d6cd401acfbe6668369cdf7aa1cd1f1682f61281ca3ff10c362f1cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP2006021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dcbfb64d618f17a5785ad5859f3435b882bfeef7bb73254b036a6c4ff98537. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP2006023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f559115191fa51434deb3c442774c0694d29bb39e90a27d83f8d56b272eb61. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GBLFP2006025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d0decf5600c670209da98a9c24e9d6d5cd550fde2fc7717dfac9545dd63e3f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBLFP2006026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec840b1d3e262fcbfa359a9d6996459e3669e39ade24c0028bb8c7e8b6fffbb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBLFP2006030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401d82dcabdd2bdf690097237ecf4070aad017669a79549a18554b1a6fea37f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2000727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1b129aee86aa9742b89b5363a5afa30bad5f73f273bc48f299705e3b58daf0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX53U2063610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5237739c47a9ff431f434efbab833fa7b3f4a924db72551b8da5469c0156fcee. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:54Z), 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/GX53U2063611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d4a0090c9ac1b43049384659481f541fa5fe0522a7aab8174c7f8c9e69d1e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKXN22139773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f6567efd5f8d63dadb1394649ef379c093129baa5e91aec6ab16e42985f43. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GX53U2063612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68438f4693c00ec442e809c0866fe92025200a18c6a33a58cf9517b91be8e901. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX53U2063606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e03193684991bdbfe1658cb0ea4c20517924dfb48c0bb5c5e87fe17c787d858. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GX53U2063605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6738b7e8ef0aef51160e7936cc5f8a04fa4721e226e67ff34e127052fe7e65c1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:45Z), 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/GX53U2063607.