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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70352bb2c869d8e075a307af8629077900290aab258ab1720f58dd1280071639. 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/6a9cff47-2620-41e4-9969-962c13e46e89.json and https://artists.proofprofile.net/proofs/artist/6a9cff47-2620-41e4-9969-962c13e46e89.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2553bbe8503caaa9f015bfa46e450eee470d98640aa2f85ba37417ddea4eb6f2. 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/ART981600256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9192b018ed2fcf3f776a844d598906ca9cd7b5e4b13eabe26b41884e6ee7709c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ART981600257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69391cf7ecb9c1f3e51182c92d4c7effa34d3cccae770ad9f6d4c696b5b3763. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ART981600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9a8a853d72dbbc18b0ac18450dd4a64460d94d4d969d4260c44e109fbb0554. 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/ART981600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b78f243f8721550ae29afb76f446393c1cbea1efff8c639d73be27c2b216924. 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/ART981600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efa2633a68a5ad260e22957897ae7c4ed8eaf5392c86fdd753d5794ebe1abb5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ART981600263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe666203684011746d031db24659dbd72076aba8e3ae621dbc81b58a51a078335. 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/ART981600266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc585467dabdc9b57d3d958078fb5c63cef6b6fc200c48c6e7086d6b8aaf3d7e4. 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/ART981600268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631f5fcd4e56c1134047dd76c672354d17cd74ae17b2fe07b6799ffb211a8dbc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ART981600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224cfd0e72b5f3c350c2f8e79657c222cc98486e051e10b3d82fa9d10d38129b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ART981600271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1698c2972c0679899561b9cc521e4544ba8accf1effcff32116066de5ee05. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ART981600274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9a1ca20809a022a6efad30d75ff8c5d5aebaf2ae70d7a071a922ba97c3456. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ART981600275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b2234f6dae9c4f7009c1be1b939af8c8a91a3b6ee5c6a2166a66d2e144959. 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/ART981600277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4908ccd764d9388eb224e87a2e312a5366ce20a8237422d05cc777a66b91ac. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ART981600278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fca513f1b2b86dd106c3c5268a8c6a9eaaba858b5bc1e6ad58a42f46ca06f8. 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/ART981600279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07fdf81cff8ceba384e83c5ba8ab41c9c39a4b013484a2602462827792d1835. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ART981600281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dae64574725233e79405576493550c38816fa20dbfdcaf7a6226d5375e2e6cb. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/ART981600284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ad27005b8a06a860b36ff17ffef2022f23e5bac38bd3d4e94ac65025e60a7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ART981600286.
No Existís - Pregúntale a las Estrellas - Falsa Identidad (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefc366424d2ffee65102d103fadac8eb7a545e426502ed3e9d29f117ae1775c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USHM82587809.