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 0xa066c81f02d6daa7a83440d4fb509a9d30c7301d6a37a0d7cd9252a0bb27cdfb. 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/a5f469b5-372b-42fb-90bf-70514006d8b9.json and https://artists.proofprofile.net/proofs/artist/a5f469b5-372b-42fb-90bf-70514006d8b9.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 0x63e66baf884cb3f7b8984dc910b7375699191213cc98a2b9f5aabfffc368904c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ATIU82500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351eadb48a8d9a57f2ea6d777493ec7d17eec05c1e4fb77c3c7e60e237c6bcfe. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:43Z), 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/ATIU82500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226fb068d8dca12cb45c494fafacfa3ce065fa394edc4c1471fdfdccd4720205. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ATIU82500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b98aa6adf171ca9ca45446e56696aa8c48517a47e63ad440a095c0daa8c675. 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/US83Z2542597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc010b04286e1c277741a5fceb9158c5375e9f25c04e5932b690e1ee40724092c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWR2242274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ed410f2499b0ab637caac6ae4d2cd814514a92e6352263f1b2c2a4416b24d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWR2242275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2799a3a6d760efbf23575d2d748b543194a58e6c560b3d3f86bef88051a142dd. 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/QZK6G2232587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc51142429b328f94b3c09737f5975987dbc27835b49314416434edcaf159ed6. 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/QZK6G2230927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f441d2fd9a7d0e970acf71c3dbc3ae7f231ce9a0d9ec719108abbfbb60605a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWR2242277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595747d4df2c677832143e66ac7246197de2dffcc9d971bcdb4608e6c9d6343. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZNWR2242278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968c1b1cf9cf8668deb4ea9a7b90bb1a0c14a8a44b1e71df3142a03f96db0e7e. 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/QZNWR2242279.