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 0x0eb1d8afa0f16734edadb896179277bdcf625085d059d053a5c21984df3df535. 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/05129e6c-b965-4f7c-94fc-661bb1b0b67d.json and https://artists.proofprofile.net/proofs/artist/05129e6c-b965-4f7c-94fc-661bb1b0b67d.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 0x732ab3e4970e31f1078a214d91a5c57570c4dfbf68c25dcba4096e2831ac26d5. 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/QZFZ21961292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9bbe4dd3809001ca791f35212fa5087bfe999bc24763ea9d3f8e87e7a55396. 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/EEOY32300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74ead60c79d46dd951d322f74cfdace7fd7f702b8cbeaec27ef8ad514460819. 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/QZFZ41964498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d299dab3ea7e3bcd7f70db14654de3b240cabd8686f72707dd5fc31b13dd710. 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/QZTAT2296204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad09a98475627e29825d0d6aa13077f1ab6565ac9fbc9ade745ab0bdc2ab761f. 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/QZNWR2297882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4639f029cfcb217735d741ca99268776b231a8c4390dd0ace53a6e5ce765cb. 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/QZTAT2296205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3dddeb07a103740027b8aefb7930d984c92ff810cf5ecc0bea7ba8e40596e3. 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/QZTAT2296206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4665f5003b448692645b7a5a5837342a9d38285a0615f2a6273e084b153871ae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAT2296207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a80f9a040e8043a9ba330a1ed00aeb985d80277a1f7e9d15ce70e54c25f1f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAT2296208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a4fea42ebc27505417d9dc4bfea60c7c9e64a002828571068b236e103ac613. 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/QZTAT2296209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b06004e7fe7145037ecaa4af9e90bffc041ef45fba22553841b11040fbb2ae. 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/QZTAT2296210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c98eae68434943950ed6544dc8b175c253db1bd6a0bf4b8024b6dd4346cb18. 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/QZTAT2296211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156182b8192e389b31a071dbdf93db40e2569ae078b1d242610b8825de6c047e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAT2296212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d53d3130956560ce0baddaac63e869881be8374b650977a60e1cbaad118d5a. 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/QZTAT2296213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94e3df55372a2821c75c4c7f23767bac5ce5bf14754ad4a28aa63fbd6073e87. 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/QZTAT2296214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543fd283868dd1e11ac9ed2fb045f42554a6c36dab1c2ec6b4ede3aeb0cb4db6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTAT2296215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe3181d64595a0ef4c733ca1d6e2f27f852ebd9897b06ef688f6ab6a4964cfb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAT2296216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bfe46a43dc7c2de299ff8fb0d85ff794daf00ece64f8cc399e292cb32ed485. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6H2103069.