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 0x1a01367c0c05a954e9ed88154f6608c458bbe0328ea8c37b7edf06b1da86693d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2991eaa7-3e40-486e-af86-1031c15f0dc6.json and https://artists.proofprofile.net/proofs/artist/2991eaa7-3e40-486e-af86-1031c15f0dc6.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 0x1a093a8e68662856a80a4361c9939d2f72003dce24d09a800aeca866172fcf2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWQ2471329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c44355e32ef1f75451d2872a2ed2976a040cabd718f6e3e9f76f7f440417a7. 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/QZK6F2404656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e88333c9359002f09f9c74ffb7c0754734da78e66ee87915a24099275fa1dc. 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/QZK6F2404657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7552d0c25ed8053fe32bb7fd6791b36af2a6e33dfc522670a42e4750d9c35580. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2404658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb66ecb36c4401cde2f9f729286f3f2349c07c1cef1e6f84c69ea3c755677e8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6F2404659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57580c6e2e1b2b36a433d45a2628ee5513deb02f2fcf888740274ef3009c289f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6F2404660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1629875eed3a0dfcfade0db4ff952383723f9d1a443057e1b4f8924bf7f7e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2404663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f8a301db4c8ddf7f063bdaf060af3126d72aa4090ce6e175aeae2adb299b87. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZK6F2404665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45ea72a5018562081d84595bfdab2cdc804d0181fac190357278ce09f39c731. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAW2456147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22299c4266c3d303b79fa7b12600be9971a8d4b19e4a2046de47f8112a3f4ace. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6H2219314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f7f467ddde77ae945344c4728c786dac98005c44897353807327bcc00c8399. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6H2219316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf8f9698bba03975f0efd92592bb0cfa578677375b12fbb749f75e933feee0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6H2219317.