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 0x5eae289009bc6efc3979efdeeb937a96f5b36dcf9eaccd4f2e7db7ea98e079bd. 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/798ab32d-6ecc-43fe-be15-da65c854931e.json and https://artists.proofprofile.net/proofs/artist/798ab32d-6ecc-43fe-be15-da65c854931e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Under the Dorogomilovsky Bridge - Single
Strong Wind Through a Desert Willow - Single
Jet Plane Passing over the Forest - Single
Chocolate Falls Mount St. Helens - Single
Summer Breeze Through the Corn Leaves - Single
Ocean Waves Crashing On the Chilean Shore - Single
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 0xb055b661e54237012ac48e645604d4b6a899329ae7c0b6935e96d8f844506f38. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USA2P1603779.
City Park with Distant Churchbells - Single
Monteverde Cloud Forest Reserve - Single
Wind-Chimes and Planes Overhead - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3f3946aa683a7da7014b4b9b07982263242a8c8732cb35650ea4c4de1b1eeb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA2P1604021.
Frogs and Toads at the Edge of the River - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbeee1c3c9781d8a5fd07201307314fa7740fb6f85250f2bbedfffda07f48b3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA2P1605094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4e063bb5040da73600e3fc9a3c6484d783c4699ee93ed44296819778d56c1d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USA2P1620110.
Thunderstorm in the French Countryside - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6a4a17b903d8f5afab75b31acbeb502950901fbb49eef28ff83a71a9fc5c2f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA2P1620107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c38efc525ef8337982ceb05fe19902f9e43fc7c23d3caa12a1133d2b34bd50. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/CHC881600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5daae13ed18d1023a455eeaa9ca4bc2c3e87e31843447e2183947a4e0b5fd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CHC881600040.
Bathtub Filling With Warm Water (Half Full)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59d835496bbd9093f56892e61045e1598498905a634d14eb4476f747c366de. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CH7811104305.