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 0x1700a7681f99259099d1baf9ccb3aaa2b899ae01bbd638d36226d5c2618da899. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b8f97c4-33ee-47de-997a-5d3630ed320f.json and https://artists.proofprofile.net/proofs/artist/0b8f97c4-33ee-47de-997a-5d3630ed320f.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 0x72a4802e07356d94d34a6817f5aabee6fe589a4fc18756dad8e6f0fbe82dfa3d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ22384698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1767122caa4b934c1a44d5772637a3ef3fddcfb55f7350790fbc17063d381e86. 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/QZFZ22384700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc071aff3bf3ae0600dbc08deded94a49c3e0bd634ddf3b60c1a94105ae323a9. 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/QZFZ22384703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e7d14195ffe6f706bf3ae4442dfaa45d077c923cdef05dd94f9c8ddb01e26e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ22384704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf1be81c379bda66aba9f790ca185cd0aa01e978da150c9f5972029c29df774. 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/QZFZ22384706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0542acc4c377ccd2d5eb517090aa9e8407fe0f40ef2c1ad2cce963878958ae3e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USBR29762664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130112f1dc48afc4a8a6abec53bc27a9236d5dbbe66dd7023daf9c7e9045e744. 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/USBR29762666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb3fc55440ca5dc7d4ed14388468186e29f0bba35c644adf7385445a07e1e60. 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/USBR29762668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559b61c23c0134710f693c167968511be197409b57f7e02177d2e022618e604. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USBR29762670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022dbb38eadb89533c8c6e0edb1dbf0a3d3e0d4fda617799a24badb476c5cf1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBR29762671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00cea2a9e593bac46aa600cd2b185a193f0636234b494608e43a1ce543766a. 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/USBR29762672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb184faa439542ee7133ab89f7637770376fa298e28f167d418a57ee277f0b70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USBR29762673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c54154d42bd2481df2fdfa8b9cbfe53c465e2e898e58cf9039d8986b74285. 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/USBR29762678.