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 0xe0f56482acb821cb93feaa3c7f64ad9a231d9c7cab9172ec5f06b97ef9f3cf73. 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/27f42d54-2f5c-45f4-b34e-bba0c882daa3.json and https://artists.proofprofile.net/proofs/artist/27f42d54-2f5c-45f4-b34e-bba0c882daa3.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 0xf88c36248679714fad5bb5da2ad56ddea7f97363e42f397af16003ed9e28fcab. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZRP52203145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88c36248679714fad5bb5da2ad56ddea7f97363e42f397af16003ed9e28fcab. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:29Z), 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/QZRP52203145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae27c726d08b40efe9935ff0e1c22c67416ad4b5819fa45365e2d79f1623b1c. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:32:23Z), 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/USA2P2323254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7adc831b979ea35b03f626acf127767070614eddf899f20e4a724be6b320aba. 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/USA2P2327690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247b897636d5b0a3ff6d2e95f71240525fd29f489254a028e53c580a00fa0610. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USA2P2263964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537ee0a0895c3f9acbadaa0e833c38baba5af43e8886b9e0d23388b99ab166d9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES72206143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd3caee11fac0a5fb69c977791d87aa95c6c5f706f1303a2d3276f1176d0bdd. 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/USA2P2326206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ec7e367c3d1c775f815e9830d27f10ed2c644860e30309ee13ad62afd8bcee. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:33Z), 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/USA2P2337306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd3caee11fac0a5fb69c977791d87aa95c6c5f706f1303a2d3276f1176d0bdd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USA2P2326206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9fe7e9a880c179df90296cfde1d5d2247dbda985036c6ea5aecda3f81fb3a3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:24:48Z), 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/USA2P2346335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965c82cf10fbefeec70d335d1a5e76f3b48e411854be1f0e50192d1a23733749. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USA2P2348460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66810e52b1c61f4a4d3468f69f9a101079042e9d59fc1764cb752a9f5b509875. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USA2P2351948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e7f0bba797eb634b3224f4b8b16485efde59a3496755f97d552c748fdbcd86. 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/USA2P2361126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eebb7b0ed36ce8d03e9e4c19120e87171c4f92503bf0a5fb8d94f3345be7ae. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USA2P2357698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31559f158236f8627594ed4eb1fcc1e9b76372abda1e066d77fd0946ccdc0d36. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:30Z), 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/QZSYP2408927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7112672391765af67f7db5ed1ba2e6e1be6ff6bee12497db614cda3ec37ea9ef. 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/USAT22400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205e2cf39d0503bd684d7da38921c992a8f3f3d8d00fb465ae58473892041a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZXT2350912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7112672391765af67f7db5ed1ba2e6e1be6ff6bee12497db614cda3ec37ea9ef. 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/USAT22400860.