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 0x5e55adc6cfbe6ac4f631f4c1d3e98c70e17ac38053dd75768687ad99cc0b1531. 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/adc0dbc2-3d3e-434a-84bf-7d03ec876a49.json and https://artists.proofprofile.net/proofs/artist/adc0dbc2-3d3e-434a-84bf-7d03ec876a49.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 0xb44f9d148191dad7984627711955fb7a3e8f40931406482e65aa3715db4be2a2. 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/DEBE71700594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b4855cfe4bb2d45a640a22bf82b527d27b11db21132707724899e831310a10. 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/DEBE71900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5805c15ed61198bea7c4bb61310c00066323d82391637d02a433099b9810b5. 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/DEBE72100538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdfa6cab237c5aa217d4099c0be8752e20b4d4dc1f42d0930f38d7f28588fba. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USLZJ1981849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697389b70950102f86092ab4754e0dc50efb1c1b67d7896ed35eb55fe7fad15. 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/US83Z2121684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091dbdc3957f58fbbf7316bee76865c265b353a9da848257bc08d4ba4fcaaf6c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US83Z2121685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6d145ca207526b2c2589a7d8b93accc6383fa871e76b2d0bda15c4f978547b. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US83Z2121686.
You Are Simin - Gab Rhome & Adisyn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaaaa6616bc76aba8f69e249152efcab325cc927d4093e55eadad407200702b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBJX32032030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784e656a30620b4918588e1b47b0b48cff8137c8079d30d9421678efb4da43c9. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/US83Z1917065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf5c269c3cb0eb950437df36bb1ec56a1a518a3550e881ac46f8413a813509a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z1917066.
Terminal Bliss - Atjazz Galaxy Aart Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cd911f59059ba38d4f49d57ef0729a070f1715a86faf9c25ec0fa680ffa866. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US83Z1917067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc2271f06fbcaa3402b64c09a51e20699e59c298135d0a44d033b6afc008d0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US83Z1917068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf78f16ece7c22b5eddab3ea2b1965053159280a69b35de922a71507c14fdf60. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/MX4021200505.