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 0x67ec8fdc169b61f21c892f3de779ba542b250a7ed48376050963c6e921b46499. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69d8d446-0854-4dd6-8cfd-79bc8de7ed8d.json and https://artists.proofprofile.net/proofs/artist/69d8d446-0854-4dd6-8cfd-79bc8de7ed8d.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 0x77cd240d52a44f9a53d1f4b6a24beee7b36e5fc979500c12dbec5ea53f9cffb5. 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/QZFP51929315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd17d50bccf87d25604319d02f08f05fee587dab7ea3521fdb0aed1fd251e3. 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/QZHN81951289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5461cd893e9c45714449e1b0ec3762c56b7e18e129b9dc8ba7c35aa7fd7428de. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZS652141539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254acd267bffa40ea2fae68631b4dc817f7a3ae8afc64b951e5a2f1d08b0b4b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTH92233809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148289e3a2569976c1fc362eb363d52705e4fc743d4d285a1086ada5891339b3. 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/QZS652287213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d27651d12ece34cc4b2f52564a51b04ee555007d1362f7e198212bee1280f05. 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/QZS652377120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5628391e23429f5cb725e91f6fa942b43914cb7ffc7f17e805d3d6a6c1d39945. 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/QZS632314224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc66dc8eed4c4ff2445e06635eb5aa854e47a159131cf3ac1c863a16f7fd49. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMHN2310631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acae7bb5ea7f56b2b03d15b423601335ae871da58f0facf5b64eeadcc0e5ec3. 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/QZS652282189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491d8fd5fdc95679125eba67827683277aa49801c36ac1edb3cc268b69cd263. 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/QM42K2226768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467aa582b73fc0c8b3497a8f8147d2b5238334ba593e2ffb796c685de0a5c525. 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/QZMHM2210433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bea90858e5ad41b83954577d47f6ffcd0a26488c974e2fff2163ac44065a72. 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/QZMHM2441026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066062fb5a86ffc9e97b43e9ad2a62dcbbdddbfd8b3cf36762b1e66cce38c3d0. 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/QZPEW2446014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89defd4dd5442397f6c16a5c644c77bb080ce74a60415d86eb59a769ea555a6b. 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/QZPEW2446016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf70634fe65a603fc3db880e3522180f2d56da23f90bc9cfc2ac34773c228c4. 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/QZPEW2446017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54113908ea3caa96e97a5dee8cd37e5913820263afcfcb959dfe69263e78a44. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZPEW2446018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0e0c9d1e421152ba1dc77d7b3312ae4f3e9c4d0690772a14a609b9357fc47a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:33Z), 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/QZS662415195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a6620ab6f268e93275e1bd0b84c5ddf12790012f9abb7ffd29e2d41ae47a06. 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/QZPEW2446019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bb53cebcb297ae49f275101de0d045b08a2ea0f38353e66410dc42cf5015d8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZPEW2446020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eca5b9b3266ce43285ad5d117842dfa9b7650007a150856617941574c4982a6. 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/QZPEW2446021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05658677d2c7e1f020f5686967ab31fd9c6b500072fc0fa9276fd4f22d5971f4. 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/QZMEN2445281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24acf9b49870e6c1237270629fc372d2c522ff1b71080623c11594d6aa3c425f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:31Z), 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/QZPEW2446023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978aab8b0efa8712d545d503e03e2dd7d147c2747ecf7950339ee94e76ba875. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMHN2453613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066062fb5a86ffc9e97b43e9ad2a62dcbbdddbfd8b3cf36762b1e66cce38c3d0. 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/QZPEW2446014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a712793a546fc26508ad77c8683b987dc42066a3378ec0729ad8bb73bace5a. 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/QZPEW2446015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89defd4dd5442397f6c16a5c644c77bb080ce74a60415d86eb59a769ea555a6b. 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/QZPEW2446016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf70634fe65a603fc3db880e3522180f2d56da23f90bc9cfc2ac34773c228c4. 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/QZPEW2446017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54113908ea3caa96e97a5dee8cd37e5913820263afcfcb959dfe69263e78a44. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZPEW2446018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0e0c9d1e421152ba1dc77d7b3312ae4f3e9c4d0690772a14a609b9357fc47a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZS662415195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ebc990683c6c61cde12cec3a16b672f55187c613c454baff38e036a117c81. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZS642424725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bb53cebcb297ae49f275101de0d045b08a2ea0f38353e66410dc42cf5015d8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPEW2446020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eca5b9b3266ce43285ad5d117842dfa9b7650007a150856617941574c4982a6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPEW2446021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d10669be8842a6628b6243508f435a635aefcf526b23141bea33f94f9c8309. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:02Z), 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/QZPEW2446022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24acf9b49870e6c1237270629fc372d2c522ff1b71080623c11594d6aa3c425f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:33Z), 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/QZPEW2446023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9396cfc3486a7802d9212753325a046442ea7815a88bd686daf51ef28c1e3350. 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/QZZ7K2450137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04909999ab6a77bba6921328173f694bda6ca47d93638b87826252c7dcbafaa. 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/QZZ7K2450138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c76ffd1a3d67d6e5977d95e22ce62820f8cf70f4eedff531831e9e38d7c931. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAT2287626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9999f43f177ce851956c8080da5759235e37009e58c7b44797ad27fa984a215a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFW2450486.