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 0x6c82b2ccff46e35245c7d6cd2dcb4ab40127049ca2127736f44a7d4e6f644cb4. 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/d66ae9e4-196d-48d5-8a2d-297ef19d830d.json and https://artists.proofprofile.net/proofs/artist/d66ae9e4-196d-48d5-8a2d-297ef19d830d.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 0x4efc5f468b5abb7b77e46208202b6cd56bacf71a2de243c1d3e248a649060c6a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR1718149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c64da1933323ee5954578fbd56ca11f0d26774a087ae8851cc803638d60800e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR1718151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a1b38d1dc10b12cc272359aa89f037bae52ab77b258dda0e3ae7782044bc5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:11Z), 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/CA5KR1718152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd202de5f9b98514034f085798901bbc526c9828120c2e3d7bfb4ee22128a485d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CA5KR1718155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a8518f5749c92328c4d0da82fc87b82d3a260423aeec10cf766424375015d. 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/CA5KR1718156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b67bf65bef1bbc549304218478f9352d1ce068d7e48d2a7839938dd850f84d4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CA5KR1718157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d15eec6ef00883ab5dc32b4fa8f67756e9789c706fa3161ef60f50716dd39be. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/CA5KR1718158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052eacf6a40c270941ab16f27d2eaaddbaff46ac7a06760b87c491680df098ed. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:18:12Z), 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/CA5KR1718817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf41f2a4468fbd8a4b1ab635904dfc26cc84b215f699cae37e61931b17339b8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CA5KR1718819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fbfe71a34cdc1190277bea86484358eb83803f12041c607bb2354ec6fd84b2. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/CA5KR1718822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9063e17ca2fb478ec105cd58e474945204458f4bff07edbaca1632d6dc532bf. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR1718825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d836a4442a566680ba42a30814739fdea4a41eb11f10250ab7b60dc5742185. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR1718827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67a6d34e8a8f1b09c04fbd4abf2a317a1d483f4a3aff13daf40ef8ec118aa87. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CA5KR1718830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a453ef5bee3fcc36539924be7e5b64e3fa9483a0384246672314a6dd38190f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:31:34Z), 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/CA5KR1718831.