1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcee85ed28557aeb6613df390eff0bee3fda82171df258c1081072f7a69e78e13. 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/6e0a78bd-7641-4f31-b4e7-d9af12c2bd2d.json and https://artists.proofprofile.net/proofs/artist/6e0a78bd-7641-4f31-b4e7-d9af12c2bd2d.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 → block OTSBitcoinBlock must exist at that height 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 0x5416f4817d4a98595636388a89f4d0bf2bcd8591448855554af6cc742de8ceb1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USJ3V0905762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2e178c9791fdf1b90ba9c6aa513d35edff61655ba026d3b0fdfe47185c17dc. 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/USJ3V1212972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99710d2733325ee7e231c4d0d4a68332aefd93f9c5a86a0c6023fa647374e9ff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH1760299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09494ed502e54d800f56339d6db739bdfff911c5df9dfc3adf4ed0f566fbb93. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USJ3V1453957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d4483d228cb1576984d1931cb8c31c7208ee70a1eae62bbb66762b151ea5c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4DW1844157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ca5fa20bdf02828d6fcb294a387e8554962a8647d8e807405a39dd1cf23bff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4DW1846616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac08a6f20b5aed53e591b3ca824b6688ec846e4fc45877a903fa1a875e7d99d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6J2136025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aeb4e45cd852f56757c581f58f9882d76d5f0a7b0cbce4d4a3a9678ea5ad00. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6J2136480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7549151e23a7757c81b5e41356bc1cb0cdfc3a1ed6a6a3c6513f3446a1fc4039. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZFZ72332787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf7541c237b8645329719264d641e5680938cc5b6892dc56ff1c524255f5ab. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ72333260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4daf912d536d08ae1ea7f8ffbc5ff9df8a771cc51cc75e0d53910121b3746dc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ72332429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6df4ebbeecf422a36e0d3e3c685b90dd94f766c2b520c2c70d5814972aa50b. 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/QZDA42353167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7d60f7e95a1f566effc3e74a85b665ee2bf25a278e08db0d03de036906cead. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA42325279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f88c889d69f5aa916cc4c0fd0b1c1946247b570ebccb2b287408a5e725bd93a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZDA42325009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4fb9e293c29e51e364461de392115070971c1be00f634cffdd7b198ffd0880. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA72386023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414acdc7ecbc6b62e4bab99ce764639cf35cb25c02d0ba171a408f43fe692014. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES62383642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9ad28109cc5773e66fb5c0ba1ac697064ae090a448e55538c1f82334bd159c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES82368384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256c0ec98f8181a69a62c4178b3bf84eba0539eea6b1108266a9c56626848520. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEN2329797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca571a5ecd5173858d02c636a8d4ad174f6e46827158fc1a5e373a58453ba820. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7Q2450519.