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 0xdd1d546db9637c8db018ebaf8d41d84672cd77a7eb86a2e6f4f4d53e417748fd. 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/4dd1d66f-e46c-441f-ac47-54e6ef3100ca.json and https://artists.proofprofile.net/proofs/artist/4dd1d66f-e46c-441f-ac47-54e6ef3100ca.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 0x85c81a0d308ba8ab78f5a85d21a18c05d6352dbcdcd341cd50c689f479e27344. 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/QZFYZ2090827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdb7e9de01af82d2203d93fd452f24a4920bcb5a40fb8bbb97d743e138c561d. 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/QZK6H2074693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b6c2462b081d511a4d3a5e02a7a2e4eba2ad2ea50ced947cbfdbcbb0224fa0. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZNWU2013570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd0a880f0a052051e121dd219d1918cb07e27e2d38c6981ce766935e347edb. 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/QZNWQ2125121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302b7b579f265c697956ee90afd653471af0aa66a518166fee986bd8a4fe56a. 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/QZFZ22210084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa9aedf9e41c3b292c8cb0b2839a88e7baa3bd0e53ec289c29a56af9c28311. 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/QZTAS2263258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473eb65c3f8343aa7c090880e919c86e6378721b73d0a0cb9298c854c06683a5. 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/USANG2269490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172c29ce92eaa04da4a10886f22b891c8fbd0c3622680154d345dfc3fb2a4d12. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QM3DF2242641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf324e0d136c75b3ad8e23f84dd1c8b0985960e1ba0b3315327d8e8e82d338a5. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM3DF2267754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ac94446c1006f53c742841834216abfd09d669cdf5a8add1e14da5e8fffe97. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWQ2259546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473eb65c3f8343aa7c090880e919c86e6378721b73d0a0cb9298c854c06683a5. 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/USANG2269490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172c29ce92eaa04da4a10886f22b891c8fbd0c3622680154d345dfc3fb2a4d12. 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/QM3DF2242641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf324e0d136c75b3ad8e23f84dd1c8b0985960e1ba0b3315327d8e8e82d338a5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM3DF2267754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcffc381ada0e1f5c1a7d955340aa4d4a2f08d06f23a242a832f70e81d671737. 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/QMANG2222499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1423983bd7c98917188f10696a14a7deafabed41948dad56089f2b3d0fe215b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMANG2227663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4652ad95d840273a79eb6136ef4fcbb784d5f0959984fa322ae7cc428ed15ca. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/US3DF2452590.
What Would I Look Like Without A Brave Face?
Lost In Dreams: 2022 Festival Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ec7256850b50a36220bb731c2f7d003f0774ccb091aa29dd47a23f9ccf11b2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/CA5KR2282663.