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 0x20788ed54a873c6b8c5866c08e7aab858feece793c7449d7e10567bb75acc0a2. 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/6a13aba1-929b-4bcd-bdea-5d41f78ba8b2.json and https://artists.proofprofile.net/proofs/artist/6a13aba1-929b-4bcd-bdea-5d41f78ba8b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete Trojan & Talion Recordings 84-90
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 0xea27d3f6d5b2b04d7b99ac894cdd8155b0dcc0f21389160205d22c68ec5347d2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USHM92275747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45678acc74e130089fc67fbbba3daa050e3199c48ee77ea77c2e65d1aeaf4ec. 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/USHM92275748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccafffd8f004cedfd7e706bfb130f0d7d0c711c4aa4b8c2e127653697ffb8f8. 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/USHM92275749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008047ac84fe0be0f0c683815fd0ab4779e6d8e7dd94719f02b89947b016d26. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USHM92275750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5903cd6cd18d4406183862181cb80ab1e3c715ca8232b5c3de24b172b0849975. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USHM92275752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f2a896bc7ee5d8ba77bfd04aab8887046811821eb846e8cc51a640c3106f21. 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/USHM92275753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6d9a53c23ce37c074e35bcc6ea7943e97b8c7fc76e6eace31a719ded5bd1b. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USHM92275754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea27d3f6d5b2b04d7b99ac894cdd8155b0dcc0f21389160205d22c68ec5347d2. 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/USHM92275747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008047ac84fe0be0f0c683815fd0ab4779e6d8e7dd94719f02b89947b016d26. 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/USHM92275750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb5c5c20e4d3af58dd8fba5373a328a4bb5ab0b90fcf336063f965b2f96884. 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/USHM92275751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5903cd6cd18d4406183862181cb80ab1e3c715ca8232b5c3de24b172b0849975. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USHM92275752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6d9a53c23ce37c074e35bcc6ea7943e97b8c7fc76e6eace31a719ded5bd1b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHM92275754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104908cb8a8d3340d76860904a4fd9ff30c3e94f099d847395464110c35e7f6b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHM92275755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b4f0f3ae21047b000ee811514bf64e320c967aa1f0be6542c3b39ba69d9906. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USHM92275756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f4baf5a6062aa74d7dd2a25cb3b01ca33539d9e5e4bc651374de77739cf3d7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM92275757.