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 0x6ba1e403066e4bea62ad68b0915c73120bfe3b5ef451669319f16ddcbea35c95. 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/1e4333fd-e5f5-41b9-9d25-e2bd130a735a.json and https://artists.proofprofile.net/proofs/artist/1e4333fd-e5f5-41b9-9d25-e2bd130a735a.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 0x446d13000ea89504c443cba720e4e79bf603a8575eaf7078448a405aa5afe1c7. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCADI1741285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb3b3f94af1a9cb38a94fd986e0f1241ea8dbe1471061b49ab5ff32a8d02f0e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:29Z), 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/TCAEI1918276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc3b49eaaa02b8bdf45e2ad02e5891eff76c5e1a67ea900134cac0e46aab9e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEX2073337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f8f10d712b35152f3dad32544a5987ca8909223c0734c1794f9b80a730cdd9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEX2073342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef1d2f4b5e6f5673f7e3ae5de34862657cd456b51b92ac6c02e1b4c88f7e698. 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/TCAEX2073314.
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 0x1ce3a9d07ca4b9e9904a421719afcb70ef16fe79c273932764764f9c42dc43e7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCAEX2073331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e493c4ab825bf61b868c5fda690d47e3cc9a1f5b1fa3e4a7faed2c22a12adc6. 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/TCAEX2073345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e48152a9d1c91dbe3eeccbe54c02c5ab0d3fed89b776408f44ad6a98a162022. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAFD2074629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d78abcad7e896d9c4f6ae9def7592e0ad0fb20884de14a27a9cd1b8156da2. 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/TCAEE1912000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c16ad3150793691d7dc68b75b40e1faae05e306f0836aa5deba560654796362. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCADZ1884010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4263b7ed77aeb78a560aa65ea41d740006aecb64aeadbb1e648de2f99e85cb. 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/TCAGB2237491.
Sorry Wat? (Schizophrenix Kicks Wie 'n Kassa Edit.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc845c5c2cbab5e40e38411b42a5ae25d7f0a4e2a39abc778285f698fa211d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGF2206075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad862adceb285468e2345ad754c67d7740d8d1b3864685a2c0703753730d2d. 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/TCAGF2206083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd768b32daeb5a12e32f499189e62c6805d613710556cce78f81da3dd1a19f2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAGF2206089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f3ea15f2a85b1c29fa97a78bf81c57bd1abe6b5232c2865f527fcab9b3879. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCAGF2206097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d127cff3c825e792765a9b489486946d95913ec60a98f93fd82fc05cf9e8e9. 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/TCAGP2298236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bde55fd7c52e043fb775bfd323c24f98e01c3effbcdc7ef7cb0b4147dbbde6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGP2298265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186aafb9c7685a2a21935b7e9fbdaff14c832f45ef14d01544ec5ae2d57c544. 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/TCAGP2298276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c45a3db83791836dd1247ddc828c833d243b89ae80b5eba9cacf6e114e102f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGQ2201907.
Alles Is Kut En Dat Bleif 't (Schizophrenix Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b91ad45b6087d5f19e4543b075c745ffef4d29605685af607a59b80e6f215. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCAGP2298213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309c72444dc972cb84b7161796b37ba6d7688558227dc27a2c978bf921a2ed9. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCAGP2298224.
Iech Kom Oet Limburg (Schizophrenix/Kimmercore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06760533482386488dde35df7dcb094215a92244c51265d30a62691c393579aa. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/TCAGP2298250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4359db2f13d3950ed11d5b77d8074d878dc7b7f3822d4273602e1b5fa7399f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:23:55Z), 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/TCAGT2395254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab166d8b60b33cd306afd1c91f86b9e5113fa0fdce1e48ab71c2b3561a2e9bd1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:04Z), 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/TCAHX2450447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c9a965d781417d028385dcf5be3effcdd2bb2cf9127c8e8b757a50e3e5c6c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAIS2459862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf669cfc0660e9955abb9d22415dd110b31576f5a2f112ec1a14d230c65e5ceb5. 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/TCAJA2411948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600c074690d8724ee421a50bea06d1f50b0135133851600a41c61bdc641cf99a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJE2594651.