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 0x5ff089df757f842ce73d3ea0e196b4537800d3d9425053647678a512c0749735. 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/3eeb4ce9-12aa-47f4-8adc-c7e28486ea2c.json and https://artists.proofprofile.net/proofs/artist/3eeb4ce9-12aa-47f4-8adc-c7e28486ea2c.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 0x47b2c3be777c0089fdefcc053e8f37698592848deb4047c7276fa9c3810e21b4. 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/FRX202059018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2243f55002407f0c07ca2e99a97c0dafbf19a439b02c3014cf2319e7402e27d0. 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/FRX282186602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b4c6057df660a6f43c6fda67be3baf5fd11408ac038b14bbb3848e986ad355. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA72126826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b683e232f2592a2a2d98a30dd591bf950758657ac72828bb452221cd8947f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRS182113432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba8e98ba2fafb7c4effbaab0327f8787433432f92ae15892ec2c635d78f42f9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX282238957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbc55001bdeb1db000927f2dc2cbdbd2e6acb16950b441d6f8fc0ea63312c7a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:45Z), 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/FRX282275144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc687cbefa9ecb7221a2fb379250894289f16a1a6ec1a0dfa5dbbbcd73907a964. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA062270477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b9822b2841a629ded867b94615a24a96501d6d8e8f01c114d72feecea9681e. 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/DGA062270478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea463cbef451b3e853074f77bb8dcae4b0cbdfc73d6c68219dbf016adec4a9fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA062270480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bd8993c5c7e8c4f659ec389fd9f4e54c7c54527e281569be178bc9e5d49a72. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2323306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9468301ae6492f27f9d9c3defff4e1fe112a9de7fa66b11a19e78d4dab0ae88a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMDA62310295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4885f22cd8c2a9ec438b245d36bf602b6dbc80db1e830d683b801e7d2c703e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TW2463107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d92c175788cbbac0ce686883cbb040fde079e76dfefbb3cf222e30e7fd729. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TX2437930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcfafb5418148220ad64952dc62a5043b51d24bb2b4c63956b9178ee5910231. 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/QM7282491618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb54a79bae4829d4e3465207ce2926def2e01f770e5472432f59eb45f835587. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA62423185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6f29de401b6563f74bcce1acca0a107fd01360d01806585016ea9e9aa849aa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUAGT2544109.