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 0x340ecbb39c441d298572e3a575714c39717e0a34bbc55a3bb081f503e88588fc. 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/9e6a40e2-7690-406c-b446-905d143b8c4a.json and https://artists.proofprofile.net/proofs/artist/9e6a40e2-7690-406c-b446-905d143b8c4a.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 0x5d4a04676e8b58c9e1cdb686a2180c6cedbbb0d3a8dbf9b5e9b2f785dd9d52be. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAEF1903836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5964a142607da2fd60536599f8faa72bcbe6ea1fa598015ba72c17a5121479d3. 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/TCAEF1911427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62c239a1972e3236b60be82e3b9b6e49e808ef5263a4e29d1cbfbbf9e59dcd3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAEF1907418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc017a6310d2ec69b3bf5b100ecf27fa3fa69c71db4ff2a7085dd36d26a31f30. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAEF1905507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5ffb2025e1a96121cd0f8228dda1a70d8eabecbacd4b77f0bc6e8772a4de70. 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/TCAEF1904231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e7d3db99c81621de3e82ee897753591345002bd9f57a4e8e9c301b72fafe24. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:48:58Z), 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/TCAGB2272318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a0e2a139a050f763b7da7b8fea770251b037a2a4ecff1cad6f8244b08bf41. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAGN2241302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ae3a906778058b2bd092738ef58c1963d0f2bf6e0867f40c81b31582525c4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAGN2241311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79be49e79b3ca84a7ddfd92cdf4c7088b556bd87b387785814ecba4f6afb0ba. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:38:55Z), 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/TCAGN2242236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baeebb1d28316c0df03d74097c49bc8e836b5c87204cc72cb76db67067ea7b1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGN2242242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc206392dd03ab7f074900f08f6f771680b6b0dfbfa8ebe24e06fa3b7fc08c65. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:53Z), 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/TCAGN2242248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06545ca1f6fba3ecdf6eb2225bdf8c28b4d72442da576a5bb9592b1553a39e7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHT2323588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4320f19d0b29491bd62d5c447e24cfa3885e2b108a76704cb856533d4bc1a3a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:44:17Z), 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/TCAHT2323460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6ee31975b672bb0a266df4a82692019a1fcf16489d2f91df7ab18a150fc028. 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/TCAHT2323561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c53c76bb6e9d40e4a2ef45828b99ed59178dcc88dcd23d705fe66eae97394. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHT2323553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991360c42a0c27d8afec1494567663d5a80f7473b2dd11c7fa0fc365dd3415a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAHT2323565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69bac67c1fcd0a81709297095f3480583e82f146cd5915d39da4c43adc80612. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHT2323659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ec000ed71fbf82d05c19f5cad3f4f1c50fd58a588ce8f4660989e862ec842d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAIJ2456773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4de3f964623921f749ecb9e2eb37636bba85e2fa6641f2fa29fbc4194c7879. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:29Z), 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/TCAIJ2493401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754e3475c95e28569f0f1ea8f50e44cf6de92e14fadf4857669953e3230e44f7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAIJ2498621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e740c6601b8516c42b8b977317a60ca7c1661833664579c393e1d2b865c8d5d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAIK2498642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c17a8ab59728560619876c7b6c63a50067caaa0d2fd28461d42e91f40e8071. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAIJ2498655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a188efe34327ae9625965401d455664d41549e3ae5ed0dcb05631848d69c8f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAIK2498670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1741036cf7571c1adadf7a6be1b473671929495da78cce3df534a5b3cb3b886. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:30:40Z), 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/TCAIK2498686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9931c59f1166bc2daf62df2bf23b109ac1d1ad617730af63cf5e0e2414d69d3d. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:17:34Z), 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/TCAJT2503978.