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 0x1a898232d43124565e6eb90b3c2fd1b715e76df85eebb42b41bb917837ba012f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41e38346-dd99-415c-ace5-4bf7a0ef8362.json and https://artists.proofprofile.net/proofs/artist/41e38346-dd99-415c-ace5-4bf7a0ef8362.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 0xe1bb06e74135b2afa7ad9eb9fa1a9ff1c28abe036ddd37c4e2a1926abc49d26a. 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/QM24S2003221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0068f77678abd5e7e5b9166848c2a600b24bc3100c3a5c10c7550ab5e630a868. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:19:07Z), 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/QZEQU2401564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135be9a1f24118e9ee17ec29ea9f5aca0333e2b038cb4e8bf1c0569204e0b98a. 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/QZEQU2401268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135be9a1f24118e9ee17ec29ea9f5aca0333e2b038cb4e8bf1c0569204e0b98a. 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/QZEQU2401268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5017114bdc2b975281790fbf6bc6d8c519e6cd663e290e073b2fce28d9bad036. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZEQU2400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a97629d3a03fa1e60984a4d5af40ca30fbc230f0ea3dac7f8fa5d06fb0f428d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZEQU2400811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050aeb4f6856220347e76c0c39b2c86d88265c926615f3890b450c9812e6fd93. 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/QZEQU2400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5017114bdc2b975281790fbf6bc6d8c519e6cd663e290e073b2fce28d9bad036. 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/QZEQU2400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93407ec6fa8f3eb2b9ef34052e42c5847bbf6cfa33b831355bcbeaa995273608. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZEQU2301390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0476b07c0cbd7b1f70791c29a612d5803a0a40a152e8001d474b7e4a8c3ebed2. 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/QZEQU2300532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196a605474794fab33c26114c36b6e79e23ed5d2fdd9ebfaae7aa396e2bfc958. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZEQU2300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a7498c91825224597c06bb97ee7173480e508e5590936637983c61be9f96bf. 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/QM24S2200272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85123d7ac0caa9cb8bc150e11d8ee5c3492c50279c6019d29f7f2402778ee2b. 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/QM24S2105150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f563c1a7de5285c60c2a44bc873ecf7f2859bb5fa0371fbe0f56db31b161ef7. 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/QM24S2102129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dd7df3471e297dbce523da3c9318815eda9acf8ea938a93600956f5f9e50b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2006408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce464d870424ca8d7598f8ccb882123273e0a93a98559f1eefd847cd317133. 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/QM24S1921930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c52f315f78b28849a6f070d82a09dcb0848a682ee0fcd9163c64443124ea2f1. 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/QM24S1833143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf4830d7972f149fbea8137108434199c34350ad9350ab4ab6ef49e9bbb399. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S1817940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c2c8baf59e687f40aa0b1f9f07c0fca466fedea00aa2604bece6db8a4387fc. 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/QM24S1817941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6269836761701ad2f20e8201d84eb2c835155cd6ddd2c6df9e5fe8ac9c682d1. 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/QM24S1815229.