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 0x1fdebebc534417a8d1122fa9eccb9a5a4c56cb89324834bcd5456f92445a6952. 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/0677272a-8a45-46c3-9df0-a675e16d92f3.json and https://artists.proofprofile.net/proofs/artist/0677272a-8a45-46c3-9df0-a675e16d92f3.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 0x45477c8ae3a91e0bdc52d1abc3d4c418d892400a6c141bc35c75f990639f439d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWX2108699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7c95552ef14a6069262801e3210f1577267c426269e58e8d24e4904bcdef12. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZNWX2108700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766f81bf487f0282f852fc202d4e3859222d310736c2516f66c128c47f7c34a2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZNWX2108701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5ae86385376565ea0860bc12942dfafd5c60cdfbb41de372aacecd5feaca2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWX2108702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef8920ec71002648d61ff0d1106574e0616c673e4c0c9d23589a536f91124b2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPLR2196134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2623924c90865f1d480f1c2cd646edbd143ec1f04722bf04f342c24c37e4e9e6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPLR2196135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbaa0c2edc65bef09147c892f3d587c6dc075680c4ab478e747212d7f1b44dd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:49:14Z), 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/QZPLR2196136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320996758ea695170b448564f95bafd8267a78abfae41b6b0e4f97489c674902. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAU2137278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b33dbb8f9e70190c76e32d8b9c6fa6617617ba32f42e7fe5c3978d72d9881f0. 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/QZTAU2137279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94440f1fa06eb9b97bf2eb2ae4295c698f2350d2a2deb669634c710db93b5e23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAU2137280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d0b2c531ae8cf6ea3b13932c7fe36d6f3a50c228e8506b315747f78bc40ff. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:01Z), 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/QZTAU2137282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24447943928d3860ac2ce30bd80561f4dff97de3843d714ba73b10d0c23c987c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTAU2137283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2c46f0ff6b3b8682bcca01e9261b6da8c6c3d60f58dd186070fc5895791cf8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:53Z), 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/QZFZ72216494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb42de62b1635c3f38daa3144c70a0876df2671e02e74ec2fb93e25e070214d7. 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/QZFZ72216495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3173ea655fed47d90a4e3f9c387977ed34f30b8e28fdbc2769b824ce695b5b8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:53:39Z), 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/QZFZ72216496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1671c3d5d22905b45672e0bcf0c46b1e457719dd9e6641d2d686f8a88ef3f2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:30Z), 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/QZFZ72216497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c4a16fbd034aba3b297a6c9654b21a2f4ce0e74c4af64a844d8fa70f100014. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZES52202197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9c043155ad2f971a8bdaf977238305873101f84fa0dedc6d2ea5a7512435ae. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:46:01Z), 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/QZES92216582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228d99135ab1dfe7a163f995d835e9df4ec1d7d633795a96eb97f44e94b2488f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZHN62221706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca86e9137932ebf970cf2c4e799d233f122fae7b78db3dd93db46246b9dec265. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6N2238069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a2fd966bb1dae78fdb0c9149b5752434330b629676ff023ee968ed033a499. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:43:09Z), 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/QZMEQ2410431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19dd99eebda919455acf695c76bd2fae7e0e468f18b151990754afe9ffee1b5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEQ2410432.