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 0x9f7fcdaf7ecea90b254b1973bea2c966b16b30f3ec4b3f228a32d66610f85217. 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/4d2e7b01-0683-468e-97e5-3061a2c7410d.json and https://artists.proofprofile.net/proofs/artist/4d2e7b01-0683-468e-97e5-3061a2c7410d.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 0x7a70d1f3f5a69ff3c0f88f471c7430739527baa18333f99a0939266dc6be3cbe. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR59Y1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dddeb39258ad519f180e5c8b05737266ef68383c9d89542bcf8b500e15a0771. 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/FR59Y1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a70d1f3f5a69ff3c0f88f471c7430739527baa18333f99a0939266dc6be3cbe. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FR59Y1500013.
Find a Little Light (Day Six) [The Album Leaf Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d6fe0d8ef838255c5e5a5ed30a1110366931c6a9ad3dfa958baf62cd5dfdb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZK6L2043998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0f81cf258379016e4569959c95665a72c4f701afe801b6c1aa86291519afe7. 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/QZK6L2043999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c905c9ca5dbbc15070599e06300a4bda3a2d20063f977b30405044359de469. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNWT2130343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93574f1278fed75ffaaffa601eea36fb284ee95b905e41dfb8af746563b4693e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWT2129719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3ee2c0f76d3ea90540c191f023e2ce99312e933acd01ff1515a130720a971d. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZNWT2130345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e89ff4bc9e9bf3a7293f62277ca7990a471b4e935618a97aff45a79529e2d6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:38Z), 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/QZNWT2130346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca1580f9d6ac9ccbc02610c13f236b20e989ff9e9203470a13e293423998e27. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWT2130348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06985dfc7cb00534d2bc770369bb478560dd1cb9bc61566f07a16036cf86eb7e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWT2130349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f6e3cfe6304034811209c02680caf0012240502ac20f1d64f1ab156917843. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:56Z), 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/QZNWT2130350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee697b78aec1e2e5d27f23a2d1d9d3bb58c13a710da10739ce38d594bf98260f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWT2130351.
A Certain Surprise (Masayoshi Fujita Remix)
Arpy / A Certain Surprise (Piano & Voice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff7364666f27a5b00e30cac24d9df8584ea41634021fb86735725d1cf5bacb1. 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/QZWDD2315302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac89190cb03fbdd1fda72441ab4911951e75f6753e24ec79434b306649a6b539. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEX262500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e79ec9032933fcb62ebba94102c8770f6df16c0ea48d08ac0853beb44be140. 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/DEX262500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af46ea9003b740262429300ec338ca9ed245bec0445fe8527be78b5057544cb. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:38Z), 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/DEX262500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d828cddc4b42e2f309c86ae1737b6521f4394ba82f403ab69611d5ce6c5dfa. 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/TCADM1888130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d5641ea1c4ab82cf0dbc3be0907f28b187c043a717278f1067f59387e5286d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEDV41700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27499cb943502ba08513c400e5243a3e39f04c3c2dccd11eb5b820201742767. 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/BEQ591910003.