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 0xddc6e39960d951d0744914bb09b380b41ca3360b899dee9efa0fd57717226a33. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe8cdae4-0969-4711-aa64-e3f8ee8f5b44.json and https://artists.proofprofile.net/proofs/artist/fe8cdae4-0969-4711-aa64-e3f8ee8f5b44.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 0x704aa036e4977998bb06438b5298f13a72a4072d33b03180f09dcd48dd7a600f. 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/CAENV2272882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0286cdc5b5d8ee97838bbffaef18321211174c4c935d58de8b5f7df62ad682. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CALVP2087955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f09e48f429fd7f3db6b2a6a1c12e3b5ed18f32dd58f50f8991a2f01762467e. 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/QZMEM2131215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748fd6d461e0fd1cf330ad45634fa26e2b1840657eb5fc6386f2d6162ba00dd1. 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/QZMEM2131216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4984c29118db258cfc9637efbd37948d539b880ee4a3e05dc5fe1e1b8a2d38. 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/QZMEM2131217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bba61c6c686e605894ad4b51610cfc52eefce915de28694f249af0bb1ea78fc. 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/QZMEM2131218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc70d65316f23f17245793b8722d1f8721b2a65caba8f499bfc99730bdf1161. 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/QZMEM2131219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d973b593f0070fc651c2f0c6e0321f9aa41f8da5f5498763bca03ab01dff8. 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/QZMEM2131220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8755e8cb3d1bd78c91701a62a60ddb9e7d7ef6215e9ec6abe93a533e5907cc98. 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/QZMEM2131221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dd31e6cacfc981e8a7136672a8f6ab20a19c16d3ed6bb2e0cda704e7ee49a2. 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/QZMEM2131222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f894f1020f07628f8b7acdb186f064d6d9496fc856aa4c12e177f28bdd3159a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMEM2131223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c83457ca65a2edc6d9ae0fc21286ebd92bddfe4ed01440e55a1a212227b5b. 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/QZMEM2131224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429f16032fb02bac8efb2ed7dd4561c4773558b936c4a67bad33dec703b03ff3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEM2131225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b72555d529068b4e097287059c652413026fa4c9cc5a1c4925784c46a7b51. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEM2131226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a496dcdd7964fb222e02a75fdf322274b7ecaa301e8d1e79ddc13aeb72aed7. 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/QZMEM2131227.
Kyle Smith (Live at Sugarshack Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d5fe11de54ba785517453ea43693f191fe00c05fa14da05995e0087739c3e3. 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/USLZJ2237564.
Tables Have Turned - Live at Sugarshack Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df3fd5c02140c1c24fa65833dc6f46293e5a440dde818f01826b89bad5e20a. 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/USLZJ2237565.
Just Like Them - Live at Sugarshack Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c3d901786d75a898e3b7aa634eea711e2f43dfa982267d994c1a10dbb0cf30. 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/USLZJ2237566.
Keepin' Me Alive - Live at Sugarshack Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53193d1e5ff2af1c885e507d60b07ea336bea4d04cd59c6eec02de059f7b3d25. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLZJ2237567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2ffd628eb683512ac52afb6805bb28d7599b0b1ffbbf2451b053888d8a8abf. 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/USLZJ2237568.
Party's Over - Live at Sugarshack Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e752416beea13e89a614c2a648cb77e853aac890de30766fe2cf670a68a70d. 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/USLZJ2237569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3db5612e1d584a6dd43da7f967231c0e080a994074f905bb46d849d713e19d. 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/USLZJ2237570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3904b4d86b7846094867674d1b7f220ff0cd6615afaa4008b35bb60e1e229f. 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/CAENV1857239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d5548fa3e56454bc69bd0e77545f52732c6495ebadeaa587a9aed7922359ae. 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/CAENV1857311.