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 0x4e7726ef47e83d1df896d7e98309b876e5189f0fc1041f2a2301deb4348c7c22. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d127bc62-d3fe-473f-b805-693414cbb717.json and https://artists.proofprofile.net/proofs/artist/d127bc62-d3fe-473f-b805-693414cbb717.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 0xefa1b682e679bb186ab3f11b5d1a6e84d0ca76b6b9a57f68bdcee7099ccabc04. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZTBD2392981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0509ec65ec2db20b09daba5c60d0d1213b94a7e2f0934d3cca7964bc5b1a4a47. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/QZTBE2321154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e40266210b770523945caa828a5d8774e0ec65c6d2cb578fd6db78d1ade572. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:55Z), 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/QZTBE2376806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a78fcee5a1de4c8e326a4f9723b29b2b5bca81181bc0aafa6dff99afeaf32a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:44Z), 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/QZHN92401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd8810f0cb1aa7fbdb848e000dce3005db3fe1120f754e2a70c6fd94cf33e5b. 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/QZK6L2416068.
How It Should Be (with Hitomi Mochizuki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0715be14c18be03056c7ed088c39f7a94758ed046768949a83c25a53081b21c3. 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/QZK6G2448450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cda4325e83345197f5b5a09f6175f7e896f7dbdb3785a9bc79f6a28c0c3c11. 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/QZTB42472403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587268bf6085331b94125c5523a0b547ef64c4c08d7b52084215d61bb3266dc2. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/QZTB72451253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1f606608408fa4af5d4cb0c4f59a4a22d9ed7de3b51743b9ee359ab5825da4. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:39Z), 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/QZK6N2404976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0715be14c18be03056c7ed088c39f7a94758ed046768949a83c25a53081b21c3. 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/QZK6G2448450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cda4325e83345197f5b5a09f6175f7e896f7dbdb3785a9bc79f6a28c0c3c11. 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/QZTB42472403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd40aba0f2b412c3989e1fbca8760f4c19bb2c75505bb29ae6b99c5e6db44cfa. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/QZWFN2433264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005ddbbec657fd500a56bf5dd8f002f66912f15f022ec12c4ce82966275f04ee. 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/QZWFX2414309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb06655f1a4edce5d441ed93cb9c9e2f40cd5d213b9b4432c0ba2113ed76084a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:05:41Z), 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/QZES72564738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d1c3b3769a77ee608bf6cc7c39787bb85e1ded6bb83ca1bb9ac45d702aaef0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6J2588971.