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 0xd62642e0c50da4fd8c3d2f7ddabbc10311a2634808b58993eacaf4756145fee6. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39d010e3-8ea8-4f42-81eb-746608e3f860.json and https://artists.proofprofile.net/proofs/artist/39d010e3-8ea8-4f42-81eb-746608e3f860.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 0xb68891e746930a222e9445dafad3e36f1d579291580c420782fc85dd3528ec84. 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/SEYOK2401268.
Sometimes When I'm Falling Asleep I Think I'm Dying
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716705de9105e1bf36867e6bb726cd9bf3b62d67e7f697f7c3e4b5c3d9d73c4d. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/SEYOK2401269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128146d7199227d05cc786214f339142eccf58e1701ae708047cbcc43373b6ff. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEYOK2401270.
The Shackles I Have Given Myself Are My Treasure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a389aa60e8e337b7e82012fb1b24a644c12eb36f628a57cbe0f033fd11a9160. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/SEYOK2401271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad9487c486537cb49ffa24282cf4372d9869058a2ce6dae06c950ea7d8ba8a. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/SEYOK2401272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924471f48bdf4d5442b550104e31d3969b8a3665ff2ea8ffe2fe7fd74bfcd754. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEYOK2401273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeab28d2a3b2fe349263bd2b89ffb1bbe6167295c2864effe2f9d400a6d2967. 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/SEYOK2401274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf391b1dcab6c3c366f15d5da6f6cfc1e4c65a6e0d88a2613348529c909cb08e. 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/SEYOK2401275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77087e2a534b0932afda02b1cd6fccf87cff681dfc1db9ccc94c302d45c2c79. 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/SEYOK2401276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31373cd6f90a6251944e87a5e99d387984e19444e5fe008b30e0c43c3cb1c58a. 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/SEYOK2401278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa62853a24c76d34c836e54e2065575862a984ca75e140f34c38588b0df4999. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SEYOK2401279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed0d82a33d6c4f36a048f5cdcd53c694bddabe1ce0e298c1bb6ce3133695282. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEYOK2401281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f73cd21045c01c0e4b8380060e2f81a94ee640a2e7f420af2728728b9005aca. 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/SEYOK2401282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cbc366ea86d0c820ea1c948608c3621c053d2e910e3a7363e44fc7a3e61a3c. 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/SEYOK2121730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992c82a349131f38ef048ccdc9c782c77aae9f8935675d7c1ba93bac38a050db. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/SEYOK2121737.