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 0x80cbe2911e88c39d66b73843a2367aa3d7cc84535ff7d8c9f51e406a2c778b9f. 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/f9f7ce46-6201-41dc-8c46-f34741896257.json and https://artists.proofprofile.net/proofs/artist/f9f7ce46-6201-41dc-8c46-f34741896257.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Juice Galaxy (Original Game Soundtrack), Vol. 2
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 0xfa778d193ff4d60bfb07923c46f24794bd83cee0729e000ff58361b4bf0cbc60. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX4R52351267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46c12bbe74437198efdab0b6bdcdb10693e04798fd4f63b9c65aa32777c602. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX4R52311438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6a5face8f9c848f6723a4a1e73cfc650f341099beda799904ae29bcf127841. 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/GX8LD2474917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daad0fcbecc7e0274325013e2678a30f7976112e80a321f9094e9af7bfa8f6e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GX8LD2435779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb20410433edf417453e97dc08cf6f9e8ada0068c2fec96accd30b8e1057b46. 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/GX8LD2422065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f382be096ec47da7e750e0f77ae11faade36a7406e7a8d4aa6a2726151fb522. 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/GX8LD2435083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0281d8a79d0d1ccfffcd7553892b4178eda6c7b7c0cd5f93d01075e950db8066. 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/GX8LD2442044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac01117ac7e9e1e932ca2db01cf4793d7c7640066f6556477b896870a45bd8e7. 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/GX8LD2450602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe213dadf541e8af094ab4cafd92e1d85fa0967585d43bfd5980324b7453b145e. 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/GX8LD2432066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff457476343a8921001a29469971bf3381a8b560202de4be185e4b691b5ace0f. 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/GX8LD2416021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33de06aecbc2c9fc87470677bfbdc00185d17d9313e895b27704637e8c855231. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GX8LD2403321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fa97095622d89d9ba49884d74c9a12a5a8a27d15c61678e049bca6f330a865. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GX8LD2492803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17c4b3feb0d8b42c9f82251706a59852b1037f115394d53d46febf7a479d88. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GX8LD2439923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1686da28097745b3772faf4324e4264c9c344f5783bebb7ec16d2c0ac6d0643d. 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/GX8LD2420114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924c93b7808ff2d2360344251bccb9e6272475cc411f144bc77ee65f49eacbc0. 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/GX8LD2414129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05743129b9c0b7a9b838e4c6911f0e2ca6ed34f0fcc779f96e97b970b9ac216f. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GX8LD2430984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385753399bf9a7b7b7818df6cb9d9928740023bbad9e2cc285a24150cc5b2e1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QT3TB2408397.