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 0xe1b40e4096691e49a662dc0f4334f124dfed88edd89decef7c42ded2d96e843c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa7c8ab4-6a3c-460c-8197-cd7ee747ea96.json and https://artists.proofprofile.net/proofs/artist/fa7c8ab4-6a3c-460c-8197-cd7ee747ea96.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 0xfe0d453f14cec39790ac5fd2933ba008e5cf2794dc100f053d14f9d61d85f50a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBLPF6808227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd999a3935cd13dbdd0896993dc1d87f23221638acd419c0ba6e5e5ae38099c52. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:38:39Z), 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/GBLPF6808231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f35a6fa1048628c09d6bde50728135cb2641235e97f83823e1b7a295ff00c37. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBLPF6808233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420f72171d3477787dd0c2b271d2fc79d675decc7f5e024eed6d6e4c8b4243d8. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:28:56Z), 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/GBLPF6808235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997df7bca85349a2a12d362773417ed49c12ed169aacc4c16d74d5f1560552d. 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/GBLPF2402119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959160807416a137c535d327e5edc342eafe8f25a3ef1c10d9d0c9256d403665. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLPF2402121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66069935d3ac23ec4971e54d8ef4ea25c79d4f46bdadac5c1594a887b1ca2bc5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBLPF2402123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198b18cc842642d779d7b9547e26d182421067c272fae0258491d08cd84edc95. 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/GBLPF2402125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0df69d5b9d805314053e08ab3ce2bbd1f7b67e37b0d171f2bc19dbb6cba0e5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:57Z), 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/GBLPF2402126.