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 0x999360369055d567dc432422e2fc79b5cec11b8463211ff9f3a5b5017e1d588c. 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/b4b55350-cce6-4eb2-ba41-6d24caba7b43.json and https://artists.proofprofile.net/proofs/artist/b4b55350-cce6-4eb2-ba41-6d24caba7b43.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 0x98d436e273446191d89bd13ca271c8b292956e9798b28df0f3419a6483a68e7c. 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/INS171600822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2e675456529babc0b52ec52d764a24ff044d6bc556caa04ed5ad026039fb15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5133f7db3e21a3ae8fe92e8a4ee15461e9ea47de48847f15ce562dc668575765. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INS171600824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59c78a1b6aed84340da3d70228ea84261a12a3852c63d8bc065713aec17802. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INS171600825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf299ab4c4e457f43a3489f25c1f85072feaf2e51df765d6cf91a43c2bfae865a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059bcdb3214b6e9e8b9a0fabb5391aaae10fca2d400c7eb40b642b8448e0882d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53408b0eea9a35bddf4d3820a32f88f5b5275eb39cdfdb2687021ef2c881f65. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585d16ef9531547d847c1a05c473bef8a3ce02bb9343617ef0152528dbd5d15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85bb4cdcf444a6e08b60ec72a57f031a7efb178bb3c6f5de80520736835b54e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INS171600830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a7199277226a829f554c06c468a0b3cc23ff733f1d8683d1065111162a6548. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INS171600831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9187ed6aed41892964c632ff3b7210c56d7d7f2e620e1a8093b1590328b8fc83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5998a2858f0984610d43e933f1cfe8d557d0e55c6719437d3250a1bac0a595. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce282134c4d6377e0435052ec7ac6a98200a37eb41be0dbdc0f72a3f6ced8fe8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:20:59Z), 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/INS171600834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683949077ba878f83aa4154dcc266e349d7424548aebb1204ad62ed5642ffc9c. 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/INS171600835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0325ceedcae3c7721fc9781b9b1a4384297e49b91d1f49556ff8f36bd1dc0c37. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d181018d71c4e3cd3eb17100641565bebab543a169a080354d73a674f019f03. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:31:24Z), 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/INS171600837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cc5fb5fed944adc35c4c8e62b75d63bc898014e5ad17da84da1a22d97ce795. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/INS171600838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43326b2d7ab6ffb0f9ad094b61422003c776fb752010b827488af2898ea49be8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS171600839.