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 0x41df81baf4fb0533cc6eb845e5f1dc5d20b68693a15fbc61f1a6647c5afe6c47. 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/0a37687c-d8a0-4c11-afb9-b0d212c94d85.json and https://artists.proofprofile.net/proofs/artist/0a37687c-d8a0-4c11-afb9-b0d212c94d85.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 0x053b48ae1bb76e077d623923c75755f2fb6b5bb8408f2cbdb9da0c39fda4bff1. 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/QMEZE1784083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15f2f2f17bf2a74b9cfc43f12f4fde2937cc7c38840920638a1a68c81eeb71f. 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/QMEZE2168029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdcfc8004b633275746d8d1060f0d75bbdf3a0a53e98c92f55e6bf6ba200000. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMEZE1784085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdcfc8004b633275746d8d1060f0d75bbdf3a0a53e98c92f55e6bf6ba200000. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:25Z), 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/QMEZE1784085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15f2f2f17bf2a74b9cfc43f12f4fde2937cc7c38840920638a1a68c81eeb71f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QMEZE2168029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9942c53e08c6d54dca26888e8ff60254bd5895ce252f82f1f24f06a32dd9df. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMEZE2126814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769048481be9069aaf844bddf028966b6370eb89447070d840b0312a202e11b. 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/GBLFP2271086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d44996589d9e98e4e3b6f600454a853fcc8ad5611534646248993dfa871570. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBMA22306655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769048481be9069aaf844bddf028966b6370eb89447070d840b0312a202e11b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP2271086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a36c9e2d6328118a49d7816a3e3be8a347dbcc7625a0aedb40b5b528b6b85f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22312086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d44996589d9e98e4e3b6f600454a853fcc8ad5611534646248993dfa871570. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMA22306655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6101973d6af5e090965e897e7a36b32bdb1f949c017e582f1db95ae78027707. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHND2582511.