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 0x809b73fa745d46cb2f50a01d0c0d18ef66fe7e5dad9f6615e0b71e362c82ca1b. 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/0892c5c5-cbef-4be2-ac01-23b2231c5690.json and https://artists.proofprofile.net/proofs/artist/0892c5c5-cbef-4be2-ac01-23b2231c5690.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 0xfc0c15db71ea3b8eb266b7ffbbf40f771b4701498eaf0c8da02359d55b554d00. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US3Z42103539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce1787115915adb89d24640486dd9af771e87f10b0867a57b14a2697ff3bc44. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:27:29Z), 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/US3Z42103541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b21530c2f13850055d00feb6efefb4e968ec5c4f8c768e0dcc916250d6d7c88. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:55Z), 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/US3Z42103542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b37b50b3da4f0b58bffbfed81571eb800e533251b7599e3c4c4e5dc738ae8c1. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:19:12Z), 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/US3Z42103543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a68bc1c41ccdfc1a5f37742d6e4e93ebdbfaf5d78908de495163894a272e51d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:13Z), 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/US3Z42103544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28317468e8eab00103c38a13dba1e1435a2e8b963a7ff99d7aa557a175311d3c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US3Z42103546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc71ae37f1202bc83d43eb54578c0ab993cda71bc281546897953ae0a09fb5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:23Z), 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/US3Z42103548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e144b0e5b13ae9890185164957c22b47221034dc20cf0b53bbcbfec06677c9. 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/US3Z42103550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158991a6081d1985573e13e8496b488c0b78cb6a3b6ae618812808e7430943b. 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/US3Z42103422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971c85a80735d129d0722b18f4713b898000e5773b2faafe695ed4b16358016f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:56:12Z), 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/US3Z42103424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e9cf58ce78dc0ed37d0592ba4b203d824a39bf07c504aae2da3290e476870. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/US3Z42103426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8188452948070b4e1b72fa1d94f3a514cc507851755188afea8ae05c32e79a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US3Z42103428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe462ab839f5c006df9010da8a3f70569b25f0dbd22a6c2806d1f6a2a7fb8393e. 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/US3Z42103429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd0ea3daf06fc5538ba8db778f89d451fc6cbf8f14e610610cd335d6528129d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US3Z42103430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf0498da2f812428f1d9bb4a3ab3ebdfcc8332ed2ef7a73c12cc696e6061231. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:53:49Z), 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/US3Z42103736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e6c82a8775336b268209b2d79c8eb000773ac5e8e424a06fa3159f6a39e3ac. 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/US3Z42103740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627404d11085d1980f43549143b035bc1d2512de69095287e9b343c33e61f5e5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:24Z), 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/US3Z42103743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122abdac9373b209efad69dcc771b834b71b50fc0cb7d331f947d2b47a75f59c. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/US3Z42103744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66547a766450deca336d6cc9f7ee5be1129d0414a6d76cb8379ab16919a2ece9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXF9Q2502444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c7a40d6d99853bbaa181621cd30f3a71a491da9dc1f3f0ad4587d1181f471. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:42:35Z), 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/GXF9Q2502448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c54728900fdf00dcb35abe7d3ab239e99449520e7db469dfa6be07d72298349. 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/UKXN22529118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056eb43af387a71f5bc27052e1a4415e875a9f904f6bdb90c9e8f2c0593ad5ca. 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/UKXN22529119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0646278c2658d2404676bfb5e5c520028397fac3fa932a808c0a6175c845989. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKXN22529125.