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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033a99c314491382995a022e891767f9393f9cb6960f6dad256741dbeeecab05. 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/f9c54e54-4c2c-4735-9e9e-231d533285d0.json and https://artists.proofprofile.net/proofs/artist/f9c54e54-4c2c-4735-9e9e-231d533285d0.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a11a070d3aa322eb9c5a9d706b9422b37c645d2ccc915760b3e16ab1310a37. 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/QM4TW1969643.
Cheers To Goodbye (feat. Spencer Charnas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d24501e65ebcc31b67a552fb9b0770c5af217b8126ba7eed630950a3751e47a. 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/USA2P2328611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d24501e65ebcc31b67a552fb9b0770c5af217b8126ba7eed630950a3751e47a. 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/USA2P2328611.
Suffocate City (feat. Spencer Charnas of Ice Nine Kills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf664acbad4440c014fd84e8db159fb887d80646fcac2765372ceb634a9a8c07. 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/USDPK2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f2a79135cffc8ace319b838dbaa585f729c86e30de07720bbbcd3249d23bcd. 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/QMRSZ2301405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf31e142cb09284ac18af5e2c0c9576bc1de9a8b9269278a27ef37ac3c8eeba. 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/USSTT2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a11a070d3aa322eb9c5a9d706b9422b37c645d2ccc915760b3e16ab1310a37. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM4TW1969643.
Heart Of A Champion (feat. Papa Roach & Ice Nine Kills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ea24bffddd1fdb290cf7ded1a7083cdc4f0a70b123c2e7d3a0bc9455812da. 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/QMRSZ2000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ea24bffddd1fdb290cf7ded1a7083cdc4f0a70b123c2e7d3a0bc9455812da. 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/QMRSZ2000323.
Heart of a Champion (feat. Papa Roach & Ice Nine Kills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ea24bffddd1fdb290cf7ded1a7083cdc4f0a70b123c2e7d3a0bc9455812da. 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/QMRSZ2000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c674ce63e3d8e277f83ec46f5211227314a84fa36f488c34cb2e7c2dc16439c. 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/US3X59405201.
Johnny's Revenge (feat. Spencer Charnas, Dave Stephens & Craig Owens)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2590c40a7a77a330020180f5f02c71dd9287305a60957b380063ed190567c77. 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/QMRSZ2201313.
Retaliation Generation (feat. Spencer Charnas of Ice Nine Kills) - Movie Night Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d135a762850719bb727489e1ba18c00490db5ab663c7bd2e4b4f1aa2378dc37. 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/USDPK2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf664acbad4440c014fd84e8db159fb887d80646fcac2765372ceb634a9a8c07. 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/USDPK2400052.
The Retaliators Deluxe (Music from the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf664acbad4440c014fd84e8db159fb887d80646fcac2765372ceb634a9a8c07. 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/USDPK2400052.
If Tomorrow Never Comes (Feat. Spencer Charnas of Ice Nine Kills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb86ec22ab996be3b67b8db6c0ff396b367347db9305996ce7641b2ed1bf436d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USDPK2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d448bf6bc44fea95798b051fde349ae6c78eca1093053f4c28b182aa947f51d. 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/FRX452136980.
The Retaliators (Music from the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb86ec22ab996be3b67b8db6c0ff396b367347db9305996ce7641b2ed1bf436d. 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/USDPK2200021.