1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x9760f8b07b18ee275d5716ba4247bfcc9ea60399575a26510d977fec65579847. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4d26661-be2d-4141-a032-58aa926941a6.json and https://artists.proofprofile.net/proofs/artist/b4d26661-be2d-4141-a032-58aa926941a6.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xa5370140776238f053c01860c9ef4f3a3c1fe8a1c2edf6b7fcd4efd5606648bd. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:18Z), 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/QZHN32023369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87287a36bada58e42ad72799b18ada1988b80b20141a6e71eca10f41abf3e0c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZA56E2100394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe10a63da952c527031cd53253ae357a7e2bb7a115683b2c71826d9eb679a35. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ZA56E2102434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3b3af14a15b2e891423918e5206945d7a508cce6dc36b9af15c6d8c1a9d3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZA56E2302104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa01abffc9c2b63f09c6372fc220bdc3f61b73e7ccb20180bb50b0fc4d7d5072. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ZA56E2304001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c9a5b72b02971a31023e3d339530437cdf0b37a7a105122f20f11dc01b6fc6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:08:50Z), 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/ZA56E2306371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09627b893f7dd45bae75d5dacae56cdb50a7af51e19c02b53067130b28f5e630. 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/ZA56E2306419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77930cf5a8eded31877abee0b7c1f41eae59482ba4faf1e22b7977e1023dc20. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPYN2460102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd8876191cb97c60fb15d6b722e24be9ad077db8eb8c6681a056a0465f00fe. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZA56E2416693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4885458a183816a28d1d33e2b721ad1fae51bd066e9c449ad1dfacd352023af. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ZA56E2416694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f291753c0aee03180e40f2d976df6bdd4cc60b0ada2434c3d1cad36d5fa1a01. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZA56E2416695.
Chikokoko (feat. Atenda Chinx & Chill Master)