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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dff23933ec4810923693f286bcd48ecc13a4bbd5ced73a730e800f7feb819ff. 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/e96cb6cc-0086-4474-a49d-77367711fa18.json and https://artists.proofprofile.net/proofs/artist/e96cb6cc-0086-4474-a49d-77367711fa18.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e9b1fb7524d1eaeaebc0e94c559a0ee56c9579ebf105b203652f12932f8cb4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:44:46Z), 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/GBHQT1600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9933ff067c82b67636c20eed4427426bc7d53c651d197cbf3ccd916a18df125. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBHQT1700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cebce3f3b99ab05662d005c4b5349b93b849ac20f9a9bbc04326021b0140b6d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBEXH2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dbb1197446ea00cf221d55a892bcda264d1619a6ef381babe3a2e4ee7d7a8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEXH2401908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9a1bad47b49eb5ea88fc8fa9c400716b78ec81e039e75e2b4690eb9818eac1. 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/GBEXH2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aac81898a136a1261046c27e90e88421ce3eecf6b1865f4a8751507011c2892. 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/GBEXH2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc8ca42ada3d8fafdfd2c575203c7608361c04081ff1e4c43bdbe66110bd1ea. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBEXH2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9a1bad47b49eb5ea88fc8fa9c400716b78ec81e039e75e2b4690eb9818eac1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBEXH2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc718a7e808d8ff1fd377e5439c656d9cfce0bd758700b4bff2322ef6e64e5d3. 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/GBEXH2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd5ce60b78ecb6126042afbcd0bc5cc27382465f867e09193c8dda238fd5262. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:01:53Z), 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/GBEXH2400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df0cfead04956b6e7c088fc55e65ef71f74506997a0300e6a2ad34c506c736. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBEXH2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb97077871a6ab0eda7f62183d56d0d2ddbada4d9efc00d30017b5a1c4bf9c2. 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/GBEXH2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18c901401bdcaa3bbc8f02e8058d935a2fa84b8b57c30ef2eb5660e2170273. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBEXH2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f335e8c520af91395e45f6d0b520973cc3156967369fae67b3a161657c5c096. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBEXH2402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6bc1d94271b7fb37bd12834d4c03c3bd828704c25335af26c7a06d730c717c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2098296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc120bbfdc782de4088deb1fa7655657c59c52a3253c5e9b02750a9605c5c0248. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBEXH2100216.
fabric presents Leon Vynehall: Exclusives
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52441fbbc57860172511f73c0089278fce0864ac8a7322c9ecef87a237c5500d. 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/GBEXH2100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e9b47d1c70c2b0304f3777aa7c2e3a7f741837cc95c9b4fc4c330823e2af7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX2253240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284508c0b34717b738cd0932df5876b234bb5a452f6eb33f862cec4958ddc027. 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/DEEC31810454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e7d35d8a83ee1cc59842ee2da6c08a369ec91000b194689893ca3dce0e867d. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/DEVY92300053.
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