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 0xb9c84c91b4fb668fbf2c1e21a03962a9f33abf65a4693a79a17112d1cede86ec. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6773a125-a2c0-4eed-9092-3c465903ca4d.json and https://artists.proofprofile.net/proofs/artist/6773a125-a2c0-4eed-9092-3c465903ca4d.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 0xd679dd4e6a83886b59933c5d7e219e207960dfae510f4f5cf7d83e3c4b26464b. 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/NLCK41079979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc373f2d4b579283e39d9713172d6d2b09b32ef19c90bbd497fe078dbd139213. 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/NLCK41055697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d18628ce82cd00558df059e09c76c813dfd3952e72a0c61aefd847d396713bc. 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/NLCK41055699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe140f27f32eabfff15e46c063b9080f8a6071d499322b8e274e26aee8d075e96. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLCK41055702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e4a8bfba5ab9399e49d31dd38abd7be6cc7decd436a535c6ee3479ace666f3. 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/NLCK41055704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67eada66f7556002abdc3e3035d1d2af8bbca2cbf10db1f9c4d048ac4ccd9cc. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLCK41059003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea223b41ea6ad2978d5f1c36b886dbf1788077bcb99f6ac7dc82ba53dcada66d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2147645.
UFO GROUP SERIES / UTCH v/a, Vol. 07, 08, & 09
Leave The Past In Search Of Future, Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa3f2587b9dbf1f279081c48c60fe49aef9c132e1c4321ef2026aad8e2422c3. 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/FRX281955793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb44a7aea29c5db054b88dab0d264c3a33c66a1f72d47317086444b596828d. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FRX281955796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b04f7721dbc2ef2f61120be96d88c70c84174aedbe1c3a84dfe2de8a27444de. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLCK42415811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91653957f990bf4c0eb6ffbb21ec9d0527eb00797884528cabec4ef12c5893af. 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/NLCK42232736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a4a313ae92cb9cd9264f1b0d18f80b10add0f69ff3753daa3d80fdea347720. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRX281987526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf38d2654fa71457b4331da7acfe2c2cfa427c840cf5b16282e32e8f36d311b0. 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/FRX281987527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e2a24bb84c3d2a913045929eac5b179bc112a1b4b9a8b22d7f73e6eac9d707. 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/QMSL31990063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9785f49d37e01857a22b49f2d3d94ad6a353908bdd289588d092ed46b8763661. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLCK41056661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e90787ba71250b94983002d1ca6b25f65dfa1a62fdaa680142fd47c609472. 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/QMSL31900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf933bae5c5bf6b1ea55e15256284b3e0fd018abd880f4d91e06bfc6871434ccd. 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/FRX452179243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49daab90af9440b592ea888a6f3a9da2432cbb915e419972e3dfa89def7f74a5. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/FRX452148046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33108b3e1b388a8535b6476b95ca86711c6a8b58ff0558683ca3e79fafe6f73. 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/DEBL60312962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3ef0113fb00f8a7323393648fef1eb923d30f7366df758082ccc0cf62e2fee. 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/FR10S2136483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92991c7ad052662bfc0028ee6368aff46572a62dd5f0e54b00050a0f15d1ab24. 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/CA5KR2012419.