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 0x2ef0f8724384c7f6a9d270f44adade058feb766fb0abc4bca9671164a96f1f11. 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/b792c4fe-6161-4384-aeef-c015982dc801.json and https://artists.proofprofile.net/proofs/artist/b792c4fe-6161-4384-aeef-c015982dc801.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 0x8d56cb7f750d927b1b27b17a877a95720bac758117d0b1011ffe50d438994b8b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:33Z), 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/IL5841616491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744efa83f0b7217b2be0ce5e62075d5bac78f0627696e5bef29c8a03aa18ec4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:53Z), 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/IL5841616495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc700060aaec9eb3b5d833ec2ca4422cc5f2d07b2a0f49f3ab522a992af3d5f64. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL5841616496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d7676962fca53a637280b85576e887eb7aabd754426d6825ba4d6ca6c3ec6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL5842235647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4429f70e24cf85d478b9f2f94466a5c47df05424df86528e72b8a502ab9af45. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:47Z), 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/IL5842235648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3ed9a565c5c8984396e6003acc694f1faf1838c25a55ea052599289dacbbe6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:59:42Z), 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/IL5842235649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39d8016d5fe59601267f63df5217ef622e01e0c62061f1975ebc519b1cf5b38. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IL5842235653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade65b028b534c2949b955a4d517cfcaa924e7cb88e109f77579fccb0611a178. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IL5842132540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cd90f3db665c15bacda477cd48513b8e4d3627e8314005b11555bf925b1da4. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/IL5842342572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774dab4ce7268a976f3521019edc9b8faf120dd863ec25235e74968da17c23cb. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/IL7192402042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481fd69d0d8bb1bb08258bca1ac4514cc4acf800158cc4f115ae62394d3fc921. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAW2558238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e2533151f437f36e1af0d517c60ab78b6360cc9f14ffd6c69c43d90226c92b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDHM1827429.