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 0x224448b8a5bffb3321e7703a49578e71c8ae93c4f81f04079d1892d8875ea33e. 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/f1084be6-f07c-4246-969e-89bb35d41e3a.json and https://artists.proofprofile.net/proofs/artist/f1084be6-f07c-4246-969e-89bb35d41e3a.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 0x8db9217f37015b295cbfa67cb5f624e0e291b31e4efa10adbc9ce3a0315cf5b7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4R2201399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd1362daa3aea6aa967f4c57a1fbde336a13a3bb4a7ffa086f573e57f64927a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGH2320289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35830a97db7a330aa4877ff02a5a484fb5f2e9566b30fc4e62b8b54cda639b50. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2320290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcb020d851df7ba35ac38e38556064186b710a5d40aeaf441fb19d46a3a93ee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE52N2305009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a84a5610b0e719ccf8512a464c02f0e081dd6a265e4adc8ce7be01c42fee3. 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/SE52N2304703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad876be9f85e1979fd71cc18908e7ae489c16a69e84f403252b2fb9bbb68d4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE52N2305804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1926577e72134b6093babdef4bc5dadae5920a5a8127b762272a1b2c1dc8ae4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE52N2305809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ccedc25ea1c57cb2bc3430cd1726a820ba6304611fc8cfd22505e8c8da34fb. 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/SE52N2305816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5425ee694a26ff4dca16a656c15f5494a0b0b6f924c2c1a0608eef9de2153654. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SE52N2305819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758b349eccbec96b57ed5b3522872c73773c7f307fa1f27ce4dc4da264c8d407. 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/SE52N2305831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc071444cc843793047e7d9fe10d62efce41ae5e0208d538ba0ab11e327ef75cd. 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/SE52N2305833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3180e5296af996556ae2e3ba5bd338b07b631c6a2d7f50c259bd343e032ca227. 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/QZAKB2333412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d362168324799f820aae062eb44f205f3c3cca71cc53f5eab590715c45653f1. 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/INT982313615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47590dcb77d08fc5cfb3713f58571deed5c2ab56e7e37f66db43e4a17905134f. 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/INT982313618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ca19d0abe735ed91b18a7d57f9c06ab47ed2faedae876fd7ae2b4ac2daff87. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/INT982313616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30668c8d55deeaf9b8da2f9694de6440c289cae875114670ebee908f830756. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:26Z), 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/INT982313634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c073038728ca5ee2928d04c0c33fe9a50247a6bad19f00405463fa125c70e0. 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/SE52N2503302.