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 0xcb928e004c3f9ebac4596f590078f273a4745a73ce7e696dd394d54141ecada9. 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/fdb3d248-55a3-4b67-b628-dcb0b054215b.json and https://artists.proofprofile.net/proofs/artist/fdb3d248-55a3-4b67-b628-dcb0b054215b.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 0x5004828af2be830af32cd1d8928c2aca3e844ee10988d52b9b94f44abddb83af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEUM71903817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37f1b1bbb12466d2ae52ca1fa0e294bb7975d13b8e8436b11d80c9296c1a122. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEUM71906748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87cf4771a39314a0dc56fcfb62fe7dfddc423ba957144a3ebe61bd4d63c07c2. 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/DEBL61800942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb781e7403b5270efb8d28b3fd61aab9e06d419f99db30a9cd5ae0eda0d3d3495. 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/DEBL61800953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2606936dc3509d04bd848eacb957c5d966a9146792019967a019e19620516. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEBL61800944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d45bdaec71b7a67ce74e9673f6839ed97ce464ea06210bba168dbf65ae0ee8. 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/FR10S2236597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8bf41313549ab7d49a63c2b75ca729b9bef4d4bc8890856d4a4743d3e8956b. 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/FR10S2359213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87cf4771a39314a0dc56fcfb62fe7dfddc423ba957144a3ebe61bd4d63c07c2. 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/DEBL61800942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb781e7403b5270efb8d28b3fd61aab9e06d419f99db30a9cd5ae0eda0d3d3495. 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/DEBL61800953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac10f2e2757e2550b7e60f8c22c2cf8d87cbbc3d52e25ac93beb67256bb7b5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR59R2279446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873420285df6b897d64350e80b14d84be4b8b629e9fadf0fbb33f603a6b75547. 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/FRX202272897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d45bdaec71b7a67ce74e9673f6839ed97ce464ea06210bba168dbf65ae0ee8. 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/FR10S2236597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1992fa166461f81e4f939b623fe0c273ebf05eeb91e7fa29961c570cc74a8ab0. 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/FRX282399513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2606936dc3509d04bd848eacb957c5d966a9146792019967a019e19620516. 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/DEBL61800944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dcb79af36b51452ab43d8e47379c6fa531bf4e7bd7ec26bd60da1b2073f6b4. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRX282358465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39a7c25f2f59f64b6a463154ae870add049e00f1add1f21154575819893c67. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR59R2201525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1843d9df21a4690a65aa95e8cd6b0acc1090b7dbe59d47ac4950a523c8b9ed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBL61800949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8bf41313549ab7d49a63c2b75ca729b9bef4d4bc8890856d4a4743d3e8956b. 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/FR10S2359213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f2268a8884021577f757879e5063c69adb3a3bda627816ad5a9cd7837ea1bd. 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/DEBL61800948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f159e7c2402d99e147b4e2404f6a849be404da34003011b9d8c1a39458b53f4. 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/DEBL61800950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821994974633d5377e6c638917ab0ee92a81894b9b4a868d2bec6afe0b1305aa. 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/CH7812407178.