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 0x1cd1b90a09c3a83c22ec2eb6fc192d932eb83f0e26ee0cd151063585d4c62226. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0e6cd7d-3592-485f-8be9-de8b2b15b0f3.json and https://artists.proofprofile.net/proofs/artist/a0e6cd7d-3592-485f-8be9-de8b2b15b0f3.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 0x1ed4eb4bf80671f3175ae6669177081e2152457e7b85a359492b9aa7a0191569. 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/RUA1D2406101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe734d2a1fbf300618ec9b3018b91376474caa8c6c60751377d7711e52821744d. 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/RUAGT2438405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c1106a1215489bc9b1791732719e8d4e34d8b476c8102e4a88f671f6666c6f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUA1D2503509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1990e079a77ee2bb7ab00646d2afbdfd19643e4a50cb55f5aa281bbf780d89. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:11Z), 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/RUA1D2517113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53cd34bbeb6c84063c6bfa2b8c50598412e21fbb174fe587754094151124b49. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:00:25Z), 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/RUA1D2539611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59424b2d127198b50a1d114e46df9a006c917b759d0e43494fd05effa2658e76. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:40:58Z), 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/RUA1D2569335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2721652ac4770a6cef0ada9b8c5b399eff54053cf051b08b726e04a5fad0f169. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA1D2579432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4acc64b4fdf438266cfdca80ae655728863185cde13d7ec4c160d20f87fdd0d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2586690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45859fc5d32656143c98fe870f70830a6decdd1fa634c5acc684b1ecfe8a2a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUA1D2593657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a506a8b39f5d306881a4f631e54235834dde0e2ee8cd9934609364d05cf6da. 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/RUAGT2523642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ec282f0d2b26ffdaac13c26d212431f8a8ebdf759c0b9114950b482831077. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/RUAGT2527506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15412114ca0e8d60aedb47e529d289575fb4b10225e031b6dff5822850f19bc. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/RUAGT2527349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba661d65588526715b0d3b4a603eee8de2ecb439c552ca8451992577275c5d4. 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/RUAGT2544141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aafac98805c649103a895d885e5913ce844a4d7021abd44c685917480dad10. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/RUA1D2488818.