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 0x8dd7efa58b9e670a3a010aaa89be4c4d07f9d9298f99caa9a154b298d16a73b2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/187f0551-3513-49a1-833b-15b077160889.json and https://artists.proofprofile.net/proofs/artist/187f0551-3513-49a1-833b-15b077160889.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 0x87191dc75f6ef467f314beea73ce35c0612437d1634f5880ac706a418333961a. 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/QZWFS2409697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da6f69a2f6f9a296b64f184b71614280dab290133f7cec9a534b69fbf523c3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:25Z), 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/QZWFV2404413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a94b34b1d8a153ef61dea0d7ac372672563aba90d37c9f0a9db5646037b0ca. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZWFV2404414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa637a336a438b4cf83abc44016c930c685b4597f770d3cc178bc16db0952d2e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFV2404415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ded196460e0283cce73c94c48b06f8c2ee467aca3a5625f28650297d5ccf1f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ772421947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ab48bd2b97427458fd7efd9340835cffed22128d433d0eba2d98b49c83434a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:15:50Z), 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/QZZ772421948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cb3009bfafca0e919cf78b1e6211006425dea49172b78fd90bd415c699fe4a. 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/QZZ772421949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9558cdf12628907b73ccc7e4a75019931ce224bcb0200cb6adc7333fe05bc17e. 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/QZZ7M2449872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb103db7936a6f60a4e41ae4dd1e88199da31c4b766e812f61ca458f4b7f24c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7M2449874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99401c1bc5391ec0bfe4ca1f44f238257afdf541650d1a852f064daa9c8224a2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:34:39Z), 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/QZZ7M2449875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d187a38f39df9a28ba8ce31de3a61889c66d7e85c71029de35cc7573f92c979. 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/QZZ7M2449876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf768c27df72a557a8d58cdbecdd1f369212d48c9e9db840b53b884820e1344d. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/QZZ7M2449878.