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 0xb1fda2007fe59db41ae4bde7c51bfd4b853393a15fd12bdbedd71b8f100705bf. 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/35376e4e-b3f0-401c-99a3-cbb840e718d9.json and https://artists.proofprofile.net/proofs/artist/35376e4e-b3f0-401c-99a3-cbb840e718d9.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 0x082f3452ad4ecab1042fb4ac367fbb4f8a7768626a22305e24419bf1e7dea3de. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:20:32Z), 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/QZK6H2070134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e23b247640752ef0b4b779bb80b818a9a31505b14160d40e81d574b1db7b4d. 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/QZNWZ2084909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ee9340d1b752832c179c513f9eddd4c5b6bca2971a3d18d266cddafbacfbbe. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6Q2100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff948cc0cf8226dbc497a975928eeb241ecd698f3d1dad7f8a40d4ce4b2d035f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:10Z), 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/QZNWW2167294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92dcc2cfd0732b6c495120efddd2ac23173e4b9409df7aa480c153d2cc54401. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:35:06Z), 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/QZTAS2177603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932fa5342c2160eaa4cb07a03f29a74681d915c4ef8fc40b2b73ff192e2807b1. 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/QZTAS2177604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfe5fd180994e35d436d8d067465935c555dbca85371502b3b0081df41c38fa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:37:10Z), 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/QZTB82220014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c5ecf3b6e09f4d519ac834bb9d7b1641af655d05286a952ecbcf2d1bbd5ef0. 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/QZDA72320567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e988fb914bde7b406a1bfef68fa5920dd621cc35d581faa1fe074c477880c2a. 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/QZHNA2313465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc0948799850db97663b5ed625ec384f6ea37987e3ef57d9e959507fae5fea9. 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/QZTBE2370492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2c6919b7e0bae28d13099c9b5c002411370bc7935d7717882a84299f7577aa. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZDA42475888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c23a4230f153c1f86279059095c21bbee3fb4ad2c98d5e86530329a1a01b42. 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/QZHN32435623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9b6a8ab60ec717075a654203223912756960896c0d782ff3ff7ddd89c5f2b7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:38Z), 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/QZK6H2497467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6704a04285fce9883623f8656192bbcf6350af7793f0f35145cd660915db8b. 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/QZNWX2448580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7500c819074e31118b7edf77207d96446b4d05b780156cc8f543261352d89ba. 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/QZNWX2448581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132cbc40269d390266a432f96bf2ee58b6a75b9299b24630e150924135eec52c. 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/QZWFQ2442550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea092845eb509d820e2816bd4ed61a09daad5bd0d3ae23627c4a2bed53acda83. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN72537782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa737c0a82b913036471dd7a885d5275d08ec97a5ce2fa5da13e1102d7a600002. 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/QZHN72538036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128d9f7a3d70a69c96f476fe909adf28c7ffd7ae44aeefe6ad363c6ad9c94650. 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/QZTAZ2535447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a008c977cb37c7bb9609d13031af065a5dfe898f7f3ea743946fc52da529312. 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/QZWFH2555538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c3abdc8113a3c6c66f36945d57f0c243366c750a6a2d0e1c34333e18408787. 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/CZUM72500063.