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 0x4ff089425c3a3920adb970f208f639a6fadfaf7a6de3b08f3ce0e965944f68a1. 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/f06bc815-983a-4ebd-9ff7-336d88ded938.json and https://artists.proofprofile.net/proofs/artist/f06bc815-983a-4ebd-9ff7-336d88ded938.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 0xdaf46bbb2f026ad54e8a8ec08130e76d9ae5b9b11590901a94be4e8c686a4e6c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBKPL1958019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56c65bf32dde0fb2fac5bafd59d38636b40a69467f94976ce766b8e162ec716. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBKPL1962599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd9837bac13b0f419b619efaa09f153f92fcd773067eda35e7ccf8ee5bb2d0d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZ93L1947474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e453e54437ae9084761d72bfbef65e8cc36f3b7a5847002ad75b14d14c619ff. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:40:24Z), 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/CAN112201199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007843304282a75e46708b03fb6391c1c670f4b839ae22cb0892dd2d08f6fe04. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CAN112300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0735c998dc590109f01e53237655238e966006fc4bfecedca88a479fe999fc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CAN112301294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7772bb0f27039d86f9b40af698e7eb9a19dff2e8485923c076b4767978b7659. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CAN112400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ca14c6dbc9ad48deb15810598d7e00f8c68fc4cdc138c36aa8782d861665ae. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:41Z), 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/CAN112400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d2db90ed85774714044a7f7d4e21647b2939ff7943fba4bce5d1a585e2648. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:07:25Z), 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/QZNWP2451250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a15d12f57b5c1322c9b368871bb75faeb07632a57e0da8581cb16496741496. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWP2551579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d2db90ed85774714044a7f7d4e21647b2939ff7943fba4bce5d1a585e2648. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNWP2451250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbbd590dc7eb369f6987dcf6b92c60d929fdd106e70a0c03d3e2d71013cb8f8. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWP2551689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a15d12f57b5c1322c9b368871bb75faeb07632a57e0da8581cb16496741496. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNWP2551579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403e4d41a6f9affb250f923dc3c6fefc89c4fe99e97e2438e255c75b5631fe44. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNWP2551462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b3a42844dae362898332f3a8782cbdd9c6ee2836e1127de5c8163f9408674d. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWP2451325.