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 0x58d9b4529a52f24ab4006fb6f2aa306645c6505193aa818bf3bed0a7d5988a81. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc3ce906-680b-451b-a3f7-4fa48bbf5662.json and https://artists.proofprofile.net/proofs/artist/dc3ce906-680b-451b-a3f7-4fa48bbf5662.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Skanless Summer: 80z Babyz (Re-Rock Edition)
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 0x1c26da63f2514e81a6ea99f709ecca85ce7709ac915337ca84ff7bce5cfba842. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM4TX2370443.
Toast (feat. Washeyi Choir & Jay Worthy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e8c039aba33e57213e1ed604be9ffb87fa343f99814593f06b6b4dd073d58d. 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/QZK6L2228482.
Toast (feat. Larry June, Jay Worthy & Washeyi Choir) - Re-Rock Edition
Toast (feat. Larry June, Jay Worthy & Washeyi Choir) [Re-Rock Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c26da63f2514e81a6ea99f709ecca85ce7709ac915337ca84ff7bce5cfba842. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/QM4TX2370443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b66ceee2b8c378ca2a301009c9f21c49bac80326441c6d5a717b3f8f2a4df82. 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/QZK6Q2410351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265f27162fe4c93f34e2508e2f46be9814d9fad8bb801aae216108709b3a4048. 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/QZK6Q2410360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156edfadabd8f17624d17745b0454341a95073ac60f2ff1148ab18a7d2d39ab3. 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/TCAEF1941739.
Way Too Far (feat. Conway the Machine, Washeyi Choir & Ceo Wacko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79b5555135b941aaef01f8ff9c0d2c590a6358ca9749255d0da58624d9ca169. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZHN32129715.
Golden Era (feat. Crisis, T.F, Bart Oatmeal & Washeyi Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca061cd38df3f7227f5b961a82687d57af8bd7e74fb8915c2d46a49991a4013. 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/QMFME2398591.
Paperbagz (feat. Washeyi Choir & A1 Krashn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40759bc6acc1df9593a84312d17a0396673f51a93f30de3d7045d40e0088ac4. 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/QM6P42474283.