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 0x55efda67075c27c805733d1f1aff153fd407faca184c8f02b3e0cbe54266057a. 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/2a9d12c1-55d4-42dc-86ab-c3a3caf3b9f4.json and https://artists.proofprofile.net/proofs/artist/2a9d12c1-55d4-42dc-86ab-c3a3caf3b9f4.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 0x9793133b3deee7e83fc6bfb3bd0dd8b8692cd90715d3e1c63c2ea7f5bcc965fa. 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/QZDA52245012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dea586f7b88f0d08661ce06511e179f462d3591bc7ffb87e20c359b5be987e0. 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/QZDA52245016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea32152d3c1eaf86b47a3c1678395c4245aa4957e14566baab78b92c6d8a7b5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZDA52245024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda38bb5efaf0602e1d2bf3f4f1f5c409b3db8e4ca39021f16642e920c3e258e8. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZDA52235186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d54aea6a1fc043d31fef29a9f0a8099aad0927504a582c5d46cbc520665bf7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA52235187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0bd7692bb90b6ee20328b42a50659d72afdeec6e23c115ebdeebde4cf7e3b2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZDA52235189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b848137d6f6746f7c820b896f622f37b377a1344aaeac063fab8a0d4ecc1d4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA52235193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1614078b2dfb09d8c7d7e1eca9f34792c8d8c377c498e6d26420353852a0cc8. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T10:58:40Z), 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/QZES62266129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c2159d86c29cc69a1925e1313863a17633888f32f8fb742cae3fc88ecc6e61. 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/QZES62266130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57485bcd31677f361a038cc171ceb1a01f5684d9f3722073a8cc21a7d568d81. 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/QZES62266131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b97ce25a97e0c491b811da40b5c2d532e125d16f9169d4d1a417ef89ccdcc8e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES62266132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026d63a8098d81aa5dc384dfa640a6b6b7aad01a70664c93e1403793d6a07381. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDA82298003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be1c43fa2603c92f4ac4bfea619771996c4eb48abf3d3c90432ec4eaa974469. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:43Z), 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/QZDA82298004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc728e0dbf9cb906949a343897fb0e3288a7c27a89a7b59737c8a5bf2ecd621. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZDA82298006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71e8f23c3576f8c49c9444fefa87d25e87075ee9e48b6f2b5d60f5af63711a6. 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/QZDA82298008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45674f9feb57584eb68751d8e1f9a1ebd97125bcad4548459fbaa55fa7d218c0. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:50Z), 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/QZDA82298010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa530196b9a80913229d1321c49451e4d36ded0dccbf9c5fa198bf4b0b16cb43b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLS2494384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed6b8f0871d0c6fa5ca94f6e0e4dbee0ffce88f2436a886c26eb9f68d8f4c7b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:34:40Z), 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/QZGLS2494386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede32fe73089fd57097dfcc0560768010238001db692a9dca25ae88ffb4b80e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLS2494387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72acd5ee85971c9d52f5dcba3a2e1331205002f3bd3ddb3ceb26a4b0f8f112c2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZGLS2494389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9139e354c16cf2045d36cf40e660c03430a8ed836d4cd3d656e4e964fd126a13. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZGLS2494277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83732cc62bafe1d4a527e1548dc612a4cb08a113463fcca8afe9013cd09de2f8. 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/QZGLS2493867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb94f7a0418f37f085f2ee23c7644879094c8b3ea8d1e27f6c04e91a75ca4759. 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/QZGLS2493868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf07f33bbf23b651ddca7f20761e9910c4cccd20cb089cd482fbff6d44fc881. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZGLS2493871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a500ebfa9d7c10de17d872c8a0781780e8518b8364866104691f3d0af6644af. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZGLS2493872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1964ecfa5acd474fc3b85ebd100eae06c3fa78a041905c9b502f147a1fa437. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZMZ92408203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa454046dbe92cc7cfdae4332a4e007f62e52ff3c896e0b3bcabdeaf8304f90fc. 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/QZMZ92408204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dda50a61eded5b3aacb464eba0006cd05a6ee7b2d94aee3741924aed164d276. 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/QZMZ92408205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4061efcb92f262eabdc43edb3d005f96c5af4b86619cdacc01f23783235fb9c1. 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/QZMZ92408207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236e20cab225eca8a4d6d1d4699056361253b39987ea63ef550d25d76567648c. 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/QZMZ92408209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956725f9c8b3c7b88d5a761416a83a9d0b7987a50352678f3ff742bf3ee44ce7. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZW9L2451313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6867d409150e3ab4df44e5ec66d59629cc4fd428cfae587bbd495e33ec2f2aab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZW9L2451315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb09668f6028e2ec260f1e4fe538753078fe13dee9ded6968f86977d77ba62f4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZW9M2442543.