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 0x8e1076a18db2edc5e1eb0d764d2732a0f589f992509cbe331ca8d9e935a8a913. 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/207bc53e-ab29-4c3b-82c3-40ad2c04b7ae.json and https://artists.proofprofile.net/proofs/artist/207bc53e-ab29-4c3b-82c3-40ad2c04b7ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
פיטר פן- התיאטרון הקאמרי ותיאטרון אורנה פורת לילדים ולנוער
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 0x7e70e20eef9282572c4930b30240c23077cbf12609f623b76025f2e0ae7e5116. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZDA52287340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fbe44077d8be9e1b51b442435dec4237793f0023155983dba5f6b948540410. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZDA52287342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3f34032a3f65fbb8fa7045c4e09821bed3f5282bf979fa8a36a7adcfe03e58. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA52287343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d935d2e87d7ad9a1b14a197c0a72990cd7538f348130690952f9642494cc9e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDA52287344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c682f0359d938eee72a29ff4d3b232a23b52c613770b32569f313a4f07efe6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDA52287345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c2c07733845134737f25a44d99ee57763f1606c17a689f53bd6b6ac2e65d2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:23Z), 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/QZDA52287346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df8c5172e76836d6645f1a9cb6575dd70fed99703db0966dc46d2893402366. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:50Z), 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/QZDA52287347.