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 0x681690bb8ad93c2c7f5cb3032deb56c32e005ab2f9ef67e6a6e47c7d948a190c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6173beda-7465-4eab-80e5-8fb0947589d9.json and https://artists.proofprofile.net/proofs/artist/6173beda-7465-4eab-80e5-8fb0947589d9.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 0x6528fb1c5068437f8c9b47b1c64c7785c95f444227afc272e190781ad115f71e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2350843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9905b04b4640d6f8b674466d633f79298398c2371828702ff7eaeec247f36a64. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2350844.
EXHIBIT B / She's Like A Whopper, Sweet On The Outside, Poison On The Inside
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78844186346a3789f6e693e0b086174731b76d17176eddf1d8cc9279c7df8f73. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2350846.
EXHIBIT B / Your Music Is Bad And You Should Feel Bad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169c811559722a89d02dfb12fe385edf899c6a00a2082dd95cc34e6718d2e6b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2350847.
EXHIBIT B / The Life Of The Wife Was Ended By The Knife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb2f4fdfb51584a39609fd5839fbf16edd3b9a5c5118dead434495eeb0b02c4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHNC2350848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5547dfa091e57886f42c64696b4b83a86c274b324d3ee3ddcf312a4b62c4b2. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/QZHNC2350850.
EXHIBIT C / She's Like A Stomach Cockroach, Only In Roger's Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c132b29299a45ce1d8b0677fa4e163cbed9743eb7384e54c62ca6e7dce98fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2350851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb4b4c52b809cb2945bf473ee8c359ae8c408cb7297bf34da797d2c6c253bcc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2350853.
EXHIBIT C / You Should Be Women Yet Your Beards Forbid Me To Interpret That You Are So
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfd5feb41179653d700d232fe2a239bd008c610b87bf8fd056d4700cd6a42a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNC2350854.
EXHIBIT C / I Sold My <3 For Scene Points And All I Got Were These Lousy Girl Pants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cabb01be1291d6b85aae7f9337e23cda9c2e1bd55b55fbb231e46ee1e0699d3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2350855.
EXHIBIT C / I Knew Something Sneaky Was Going On When You Pulled Your Arm Out Of Your Sleeve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265ca8d2fc9cde84685c8c1902bb065a21a6c50849533e687eeebfbf117dc35f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHNC2350857.
EXHIBIT E (cassette) / She Almost Won An Academy Award For Being The Youngest Person To Portray A Person Riding On A Whale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab029487e610f379a06633e84e62200d68d717ad4d80219f5f9536575438b1d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHNC2350872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407fd27bb4714adf3c8776e9c874e71664fbafe3bc7f9d1b58a99c6b507b1f07. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZHNC2350842.
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
EXHIBIT C / If I'm 12, You Know What That Makes You? A Pedophile! And I wont Sit Here And Be Lectured By A Pervert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b9c3b7703abe021fa1de4d2088f2ffe50028e6408c04c9f6d7fbee3eabc873. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZHNC2350852.