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 0xe7482af1b05b53e5de489d1b6adf3815090c70956caf356951cdbfa5bcac385e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8cc48f0-a59d-423c-a055-36304666af2f.json and https://artists.proofprofile.net/proofs/artist/c8cc48f0-a59d-423c-a055-36304666af2f.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 0x26bfe740a5d24d02d88b40bd9cbd54fce5671ad9bcc0e78b32507db8e9fd0957. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOYBA1501061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5104f534ada0a9afe50c1c34397dcb1fdd779cbdfc5400bc95bac969c23d3e85. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/NOYBA1601011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f53a0058f912556f1e08ba7de862da613dc321b5bc86db534d079fd62fa417a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM4TX1944672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f25fffe8c80ccedbe9bef14f1ccff28b9d002f7ce24c1f69c352006c2d1248. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SEWXY2101401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a2f25312342b39dd4667d5411def529879135417b4413cc17a834b59bc8f73. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:49:21Z), 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/SEWXY2101402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa29feb06a8f69e457478e7364a3f771a6e2638a7c2c5659caf08af89907d02. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:18Z), 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/SEWXY2101403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b097d6a932461b4afd08dabc07cdfb1501082f39841abee263b546753569f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:26Z), 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/SEWXY2101404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8cc9982e42eee40417ec23cbded1ddcdd5fccd8fd4b027c9a54410eb463263. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEWXY2101405.
Noen har det bra (andre har det enda verre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7f17ea63d921cb1fc7be0d54ab154eb364613017914ee4755114c23a8a2e6d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/SEWXY2300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73bc7beb027e6b4b06002025f9f72aac7babf90afe48d0e210ede374305b454. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SEWXY2300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73909b544b673f18b916e89574b41560cf6d0737b40d321d1122449791253a43. 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/SEWXY2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13f1438e9766e906c5d931286d9b2e04ffd0f00d401512dd33ae736eb3d450d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SEWXY2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5c7e007b86bb3e381be6fd3c2dcb234f7e064763efb2cbeaea59b950da6a4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NOFVV2482010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd7a9be501ac8f45efcef9cb1be9b492adf68542d546fd086d88f3839dfed9. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/NOFVV2482040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ac7c11f7fa9df95a70f34eb8a2a8b4df43f16896199096124a579a4949df15. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NOFVV2382020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4514ea69dd8644e69b9e32bd0ba5a23136b22ddb6a3e012a6f2b7940a67bc. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/NOFVV2582050.