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 0x78f1d7890fc936acda43efb3ad0542495c5fe364dd59d34c0c40f170eb690a0b. 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/ea195b6c-e359-46be-a730-c5dd0cb6706f.json and https://artists.proofprofile.net/proofs/artist/ea195b6c-e359-46be-a730-c5dd0cb6706f.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 0x0d4d167e5f44686d2ecc4e6d0c6b53b7be3d3ca92b9daed5813675c9c76fdf5c. 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/QMDA62378603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d08258b036e01bb1e0d529792c7013193a1afc8df6e70c030b67e6e5b8dd215. 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/QMDA62378605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09c2eceb884c867b3f091c28952ef2ba2b62ccaddc37ed69acc902686704f11. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR2X42440405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503422bde33aca3e4478a6f17bb3690a838738e5e61a3e3e3877ff87f174f7e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R2456656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37119da94ca48b08fbd2856e91ec9f2c6dbce83628be3d93e878cd56f59b1ae. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:26Z), 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/FRX452439924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f83871e3b4defb1d807cff9de370298d37ca3a8973fec22e9a99844a00f716. 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/DGA052411140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb117afb95bc04a0f87497229b61b01a0013391ad884fbee59f8809030322be. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA052411141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc6c903475eb69d1568a77177ca52dfbb6e8db4dd877a81574d95466da9f03b. 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/DGA062432770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e9f649e57d1e549eb8a890f75975088e89f764218f7e3fde37b8f8ae175154. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DGA0H2435891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe0344b43fd776e497381757ae12511ef84bae4e3ff136d341a237e6e447a20. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:03Z), 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/DGA0H2435894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10748fd1febb92dea362d9e4a4ea4db8a065661f5669078a4ec62d2ae7bd8d3c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DGA0L2408994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44c600a677fcf2f4e4a6f2f55c931c5ada23fb2774791a30778a48f487ee16a. 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/DGA0L2408995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce1d0d2d9a0b278f187adf4674735e883909025f1c58c759883521f5991ef22. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA0L2408997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb78a74c4dee95d4e6c60786813b021534233402fac5c95aebfc6aafc54f565. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DGA0R2447864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b944e979f6a8c74c0a3a325c130b06110a6e1d15972fc2539e4b468157c8b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0R2447865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a836ccda2647d5e06ef81173e56951c719c0ebfa4f4ea8758d51013710e2ec. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USUYG1591348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e124ea54507a5d81a176b1ca428660264fcb8e3a63027d2ec1171b89d4f736. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:22Z), 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/USUYG1591350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf156c10c2f6cbebbf2044ab04117689b98ca71247a08c78c5513010704ea5b8. 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/GXFHP2447685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d193c0617cc9affb1bcc16ac3179f11b6a57b49ceb14b0fb5c19cc9c1a1562. 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/GXFHP2408762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e712ef1be31c27d04b8d29896a093fada9e42b36fb614af945c024ddb60d0d. 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/FR96X2588648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8586209b9339f7765beefafb5973ededb575c835a5972cf059e6bb1334346eda. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX282503418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff61f9fc86860c7b780b71cb129c309c85fad4d7ed6cff01373a254bfb0773. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282503419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2173ecaae9e2d24ef59e344b5817fb08cd747792e1b829eda817712fe85252. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX282503420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c099f55dc62cf2b01ca1c480f53d2c16e01781d5e4cf1550a840579dc0d65. 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/GBKQU2545763.