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 0x4db764abfccf1e70c007a2471692a18c78764e1fdd73d8e4e277b906b75029cc. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa96ee17-dae1-49a9-93c3-02933ee54a6a.json and https://artists.proofprofile.net/proofs/artist/fa96ee17-dae1-49a9-93c3-02933ee54a6a.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 0x42ece5d1db353ea9f1a1febb6de1c60e5e88bb78b2cd481135b1ee815c0c1691. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN52508927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cd7a8178e497da323304da848a42f5ab4e952e6786fc3f141cdfcb22d99708. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZHN32578617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41e0a693b2d1b70faea9d960f22e07d897e5a7d230f8694d3d2d9cd97db54f7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN32578618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5fdc7e61ed1adef45526ccdd8d450a69acee45e8c4f9fd7d5e8f41047b48a4. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZHN32582823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a490eaa7ef3a57e1d0b200c63a5999ce3b3ce835ab970f5c60faa76d0274d0e. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZHN32578616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec17f8de67daf439625b83bf6ccc5a4365b9221a0e5eed5d5d76e9af34b27c7d. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZES92592937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e89f66aa931c0ff034f6393a48f0b4fa45a4e425c35ecade9289afe2319ac5. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZES82573838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192f14b59c49de7a1ddfe4229ba45c29e695b3120716fb8e4b12b07445f8a2f7. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZES92546172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d932c0259367a239163206df1adafea876fe7e7f10ae81221d3b21c30d399. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:40:06Z), 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/QZHN52503375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dad8aa17329d8c7943516f56923f80464d906f43084c455915ae1b01e2b1e0. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZHN52503373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d3b01cdbaa81be1819bcaaed20e40fda532fdee5422dec079eecd103272d26. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:36:01Z), 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/QZHN52504451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f0f37b602449ad712869c67a32ab2395ef147584203613f2ab1bf85738a112. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZHN52503377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740c05432aeeefe00a004743eb889be1c674442ffc3c5362fd48b21fa5202885. 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/QZES82574854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bff6a28edf0b62bd769066f33860e974aa344a10b7aec6830b2843fbb7b0cb. 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/QZES72585635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732a7b803a85494db634c7a2eef1c513ee899a2ce2ecdd2e5ae988568e25bda7. 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/QZES72585633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a957fd925369a9de6bd602ba93d7138c42b2ef1fc64ce9247ef196e2ab74ba. 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/QZES72585630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4f26f938b874d7403a1ce127a84f28a607407316086abb8a26d1a8fdad7483. 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/QZES72585629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd43df15c5b95324600c4d2cde71213fbce9bacc948adb1ad6c326b33ddc59c7. 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/QZES82574849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b7a9f37f575e0a3d5e1bd6dc11ca6122f9689d65048d07d88d0662ac41c21. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZES82574848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2230e00dfe450865310852f4fc9c6535982b91687856449617a51151400d2e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:28Z), 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/QZES72583742.