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 0xcda5493098ecce983e55e7f6edabe59dbb7a487d759fc244e4b6a02fe2255d3b. 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/ec168e4f-5179-4b6e-b5d7-8377c5606ee5.json and https://artists.proofprofile.net/proofs/artist/ec168e4f-5179-4b6e-b5d7-8377c5606ee5.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 0xf43f5fa5663691deb36916b46dad6d16205608167689c118ae65b2634dfa5f78. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJC2432002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f5fa5663691deb36916b46dad6d16205608167689c118ae65b2634dfa5f78. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJC2432002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f5fa5663691deb36916b46dad6d16205608167689c118ae65b2634dfa5f78. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAJC2432002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48b94dd657e3413b32c3d6bcc1e7760f70a21f5c797abaca5657ed29b83be3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJC2493980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc6fd7dda7076257b6a71f11e9e72733e31a230ddcea4fb0281ceebfc557077. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJE2478881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d282e37f7248b338031bb4f03bba5dec223210974e955fc93836272a71b7ae. 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/TCAJF2479165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3652913f1ed3186a4362d410adbf8e286f1acf3e3d831dcaf9158b49fb0d49c4. 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/TCAJE2504305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c986830c7e5e522415684cb5b457327d893c7062137601e95d54a75a30f4a6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:32Z), 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/TCAJF2504431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc74a121cf20bf2b3cb5cd3f4b615763e5208ebd5d8d8587e361c518d0fd7c3. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:37Z), 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/TCAJF2504252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342f6303f54de60fd826b7e0f0898cb6b65070bc1ce13bf3bd7ab90a190eee7d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJE2504481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586238fe978e16877b22d0266c6081f74210de70623a3f71e446af2552e27467. 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/TCAJE2509067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0220b34d321a7c3c5da47e3f4db649b4f298ef4d4ace0bdd7e3732d89137819e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJE2504736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1706bc0e7812986e93c58eb57b667411a1bc29b0f594d003e693a9af3ad09ae6. 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/TCAJE2504133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e0f3c9a2038e523aba5a93c2602d510912723af5fbc46e749dbebc59a1248. 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/TCAJE2504206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32c192ccd6b64c0764c1a498db4ca8f7d05d97802e8d7d4635e1194c38def2c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAJE2504578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e2f824a0362e388d5d5231f1f3c5d76c09dba087781c19f2c5ec20535dcc35. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAJE2597454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1cc9e5f6e7899ef8320e4be57eaa210077c67de0c1284994990c99ed007a27. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJE2597466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a2b7da1b34fff5cd89334829e02455f9a3bc52e59d8dba72ed80698991c3d. 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/TCAJE2597475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f7e76677cab0c295dce774a13fe5bf439137e8beaf16c265fe8d16c3c4039. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJE2597487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309e8162447a2660540e8468ea1b30b3bd1ab462ac7dc5dc582defae974230bb. 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/TCAJE2597497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcf88090b1b9b30178afca1c7b58b1ddf2c3c803f638530ea2b0846218c4e89. 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/TCAJE2597510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abd4ea3a427951b55c0dae361c3debbbe208745ba69e1d44292e657ceb5bf58. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJE2597523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61510a2d7f627b0e75650a3a31163fc38f994d267a239bb89881554e00624cbb. 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/TCAJE2597534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeebd306a9036a9acc1f9288d7ee6e9d0ea6a754faa8197c70e59591bb675c5e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCAJE2597545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc00e8f998b5be58dd45df84e068ffb6dcd4a73d94c3e2234d80fd19b580f2e6. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAJE2597559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5210a38205b69a606d172217ec642a8ba92e79379962d53ec10d4e549be8b5c1. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAJE2597581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a5fca1a885564a21a824ce804b46d6ac843cfd3dd864a2d5835d88eecaddf7. 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/TCAJE2597599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aff0a31a84a35895f542bc6c1f7e46b294dcddc46c3ef4c0ca7c2ec8d4a610c. 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/TCAJH2518980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a5c29eaeba0ca09d7413ca6eb27cd5b1ab99f30646fe19912281c1ec01855. 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/TCAJH2518348.