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 0x84f9b43660ef4cb78b7a0fea1836805968db8ad248001505611e9ab11d5bfc3d. 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/15665065-c37b-4945-bf4c-76bc79260d83.json and https://artists.proofprofile.net/proofs/artist/15665065-c37b-4945-bf4c-76bc79260d83.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 0x308b3f88b93d204aae67d1d2d364d15f101f298f4c2245d5a44a1fd612c2ebdf. 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/QZFYW2042048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd369bdee9cb8321884dd21166bc65c697e5a369bf047bb7f7050c457235b082a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA52050310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe3a4fe285bf0a8041f5ad4746720c213dd03ea5ac80867e8f4b43db335cd51. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA52050311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37685d45be143ccec7e3f51595b604978ab46a314418afd32e2b5863b29c550. 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/QZDA52050313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f3f5e4d52dae1efa8d1b9e623766151032e7d48d4c543466ef5bc31f1219a1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNA2043266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc32fff9041a05442dee6b6a220c0749b13d87a9d5f6ac36fd5c9b875eaf319. 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/QZNWY2025437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872d8b3564983125b80b2c9b39f59fd4106ba190de32db000b46308b9ae875be. 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/QZES52199885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26864e318cf75a12eff6e86691fa2c18a06f6189f169e007449cdf02126fe60. 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/QZES52199886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7912c661c0c0264424d676971b149bac8b703b73cf48aff161699997a22821. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZES52199887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30900e442beaa9ec6e8d113c600d71445feb22b3b0242b7e0377823730bc93f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZRP42140940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41318975ac79ada1ec4a61813c74ff15c912f783bb2b24aaddfa0c83987915. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6N2261224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edd907fb4d5fe6e6700b3c25bccd5e88bb32d801bd3abf96a5b695aed1381f9. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZK6N2261231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d415e6865640b017396f8b9cc17923ff5459ff78427538039388333c19514. 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/QZK6N2261235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec74a5ebc5fdc5947cedadf8ea2fe5b872db576b32d7a09746cd076d62d70f2f. 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/QZK6N2261225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3b113331a79266bdc2e66afb9a7223f6d934068a4d7de26f7b54e844832a9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWV2298765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31358482ec14138ba3ff6da2cc56643508e0bbd13b795a2d40aa826dc35ab2af. 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/QZNWV2298766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef978497bfdf2b5f216bb82dc6e3cd6dce5254a20d8e48ca453f32bcf598654. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWV2298768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170499dcc1a3b87d31339c4df92f9243ff6750e4d823733447802a40caba057f. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZNWV2298773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4c2940c1a510b956287448cd2ba69dc29c2d65a6a62b7222cbe46789aebf6d. 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/QZTB62263688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668d3834a5544550fc14dc3015dc84695a78b0e5c01f67f92ddd8cba79a503ee. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES62473636.