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 0x56905b97da3eae10095a1f7a18d1755ec9dcc1ebe7680587f102f2ad1491dff3. 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/8c06bfce-325b-4341-a9af-83b49e017d1e.json and https://artists.proofprofile.net/proofs/artist/8c06bfce-325b-4341-a9af-83b49e017d1e.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 0x0a3b11142af5eea7de619b7114697630a8a379092b7830163bad743cfdd49956. 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/INS189810258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82ca946287d22c639d21ba2823c935ac940bd7bc4601b2af3859e87229bba5a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/INS189810259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8da52c05f4d297f15e81b7701c481f8b4dd05aed1fab562f788b843db9345b. 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/INS189810260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e5fb58b443664997734e0746ae8cb4c3867022e144f29e671c3e92d74082aa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:00Z), 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/INS189810261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0836459954142ee8beaab35c42ecafd86e61917ce1fc915e49fa4991d4a39e5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:18Z), 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/INS189810262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756212b835e255266ebd74549a2a719015268b5e076d76819fd4d0fbee3a5725. 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/INS189810263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65a1b9963ddbabb19e39c69f63dbd9d1e48383d6fe597e3bacc0a7cfad6e9ad. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/INS189810265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1954fbb9adc9fc2d35cea4a89347b2361c18686df2fd74fd4d7611e6bd2efddd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/INS180148385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440dcfcc97129a70410f32c12fc8a2ee85696d48641158dfd28d97e6cc002bb8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/INS180148386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b68ed5a9541dd9a40c1acd40fb35807edc59f5057eb5ae82b5feab8821531. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/INS180148388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb41163feb1ae0da07737d177ae78aa62c614d408f4dc53ee24f5e6149d62023. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INS180148390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f7637529603396e14fec7ff9dc81cb2941d7cd045409b0bb52820e4b71d9e1. 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/INS180148391.