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 0xfd5b28b910606f768fb2781788a11b04f6095681b7db07d9cc2bc37e23f775b5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5dc2828-1248-4254-9bf3-7843bb95d30f.json and https://artists.proofprofile.net/proofs/artist/b5dc2828-1248-4254-9bf3-7843bb95d30f.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 0x5d7c19f959ac58319033f52dd8eb60e39e882839278c42584d9daa532d0629c1. 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/DEY472378335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd6931aba6b72c31453cc37e42a59db5cc053808db43981c42a7c3034a5e0c9. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEY472378336.
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 0xec2c2b5837035413be6460ef999d4a2c2cef8413353d527e231ff4b98f60a69d. 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/DEY472378107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e1f63f0df0b88d01e7074ad5b3237347f79c85efe767ea6e837c90ecab498. 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/DEY472279932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48544bb42f64d6208ea7d98ea8cf3317f8972bf867967a03b4c1d92e4a5897a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472279306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449b20e4cd59acecbf97b6ced18cb9dcbdff328c13f5f98cfcf70a4b0eee1df3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472277956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994b06ccb49d378ebeee688fdde6eef12b825ff4e994168d40b365f3e052722e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEY472277955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b04a0eb9931c672c6a9380a46a04170181c85626f7f450015170350497e95ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEY472179572.
It's Still Fucked Up! (Fish Go Deep Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3635dd1ab707328072ad01638009f38852ec67191238705dc094fcfbcc1014f3. 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/GBLV62108931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd300463869e8a6956dfa104287ccda5870535799037237861939614e9ae87ea4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLV62108932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779f55cc40aa5c4de47bfccf388e78bd568789a98602f1fa284c2e97335750d. 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/GBKQU2198434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b46924c9f63ba54f6cb574c60da0ef7970054eaa04dd8d9225d66565329cc5. 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/GBENT1654729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e15fb8df40f26681fcb4e02f67cbf3b2323e9f746e46c4855bf268ca1fb252. 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/US2253033303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72cfd55f0e8668629a77b615efdd456df403d6ef8e851e25fdb6d647df5ccfe. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US2252033302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33e0cc89be4f6562f75d9ab024e88a31429ebde6c88bbcbe0c697a3bf6d7baf. 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/GBKQU2022016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c585c8f45b1af7cf533dde66fe04096f6b880a15010f5980195dac5b58c2841. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2022017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7c9169a0de3ba030a8de99ab9e6225b31af2286c31aca6e8d2e3f0b77b1ade. 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/GBKQU2022018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f6fce4d6c58c5a0b8cfacd3c96058f1493c4541a9242d62a6d8533f2ec8c28. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU1949069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d99854da169982942cb0271798feabb4c6af91cbb3dfb207cc1822d2aee968. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US2251828203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe667bcbe380d51044463e7b15c141988bb91489a9027242846106f3b1bccc55c. 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/US2251724701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a0257ba20a4b3892588f6b2f2dd494f85bf031e0502d446bd86c1dc80508a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US2251724702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c9b57a83acd0348f740cb8c7cb2f34c7e73993e710f4d7fc1ffb7720684c4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US2251724703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b53bcb6f3d4637b3757ae70abd93904ec35c49652857e827791af7ec812d4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZ651324876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194d13e708c89fd7ada2191f294c3777854a43519bea1e284df67f93d4dbbba. 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/DEZ651324877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb506dd16b7d18f117eb99f17ace2e4a9e810e736ce1b6dc2e9b2454d45d8dfd2. 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/DEZ651209427.