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 0xf68a376fb9e89106dc8a97efd658e6c9462d317cd6693d495e434f4a5aba8296. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89bd6c00-762f-47e0-b945-6288b15d9577.json and https://artists.proofprofile.net/proofs/artist/89bd6c00-762f-47e0-b945-6288b15d9577.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 0xc504dd180e8da4f55501287583f874b01a56da35443c8eb69ef651a85763d724. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:32:56Z), 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/BE6F51500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192e7a60b33db3d746ce4657e2ab764ec91dfdbc32c3f002654236ba70bb7360. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/BE6F51500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0dae61d4f4fa93c17c1a4d14478b5b9e5b687379ffd1371bdfa23e15af7a94. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BE6F51500580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4103021ac70b8c5a98f50abbf5adbf29b14551825b5d35cb95cc3a9db376fea. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:02Z), 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/BE6F51500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45c0b89efdeb31ec6ea9548c7477e771592ee7024df8ccb89c37591bd429b9a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BE6F51500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e359a84acf0cac2df5f2ee7569ea07a0cf9a1be7675dcd27640bdab3f13212. 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/BE6F51500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4283d78a86d36ce9bca49ef2ba739ce00e919b3cdaa238e9bff3aab8e7ca02a6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BE6F51500710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f84565cfd50115b61dfcd46e02408bb6a502f93486a08961b1bc3f52f7c4d38. 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/BE6F51500740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824df453e5315443c78b321b5865a7c96da9405ecea8ea1f9af3b8dcfdae8cfd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BE6F51500750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e7d1219b5f31250a943debd4ca7456c260d03c2e48ac1d5907dc710f4ed37. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:26:25Z), 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/BE6F51500760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330402a5a095839ffb54f4bf6789d4044f9de2d5fa7d18a2d62999becf7c482. 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/BE6F51500770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb6b1b9730765f1fc2a37807c2de466347498f5b0360a7c0166867ec0ae22f3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BE6F51500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9481ec7123e817f38d5eb1612f369c3e9610a095dd87cd2fae669f068678924. 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/BE6F51500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c19d5b11ad6b11991458b73d3a8caf5d7894b6550011b1bcd959f4d3327e47. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BE6F51500830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe04ca4bf22b6a979613cc4d3ab07eba4dc1e1108dacd0298143a1263a70f5be. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:43Z), 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/BE6F51500840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28a7748da9e4d108fb6c7d79b8d8994d9d526b7e9f6b5ca26843857492979c6. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/BE6F51500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ef75d717c43e9c18d1aae2ffafa3c3e854098360fd73f9f1b243f2fc66a1e4. 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/BE6F51500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0b1dbb300c3ed48ee978fff367dabdb259428833921494751f98e65b6c321. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BE6F51500850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca8a14e5fc748e2edfd83ce847670555b8b42912ea52ee4b4b974bd23c24789. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BE6F51500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbda330921588ace6c100900bd6112031ed77a248d13f78d424b414894747c2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BE6F51500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc504dd180e8da4f55501287583f874b01a56da35443c8eb69ef651a85763d724. 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/BE6F51500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d53ba491abf62acb7122c7e5dc04af5cd89353d906e58d3e3c0d277909d5f1e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BE6F51500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e359a84acf0cac2df5f2ee7569ea07a0cf9a1be7675dcd27640bdab3f13212. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BE6F51500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0c76e74b439a575132c7a18ee51f8390c75231f219ea9eb1484fca8e016298. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BE6F51500910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996cfd470ea9d0757d4f0d3094b8f61b749f7253797585106ce8efde59eb7d4b. 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/BE6F51500930.
The Tango Club Night, Vol. 4 (Compiled by DJ Ralph Von Richthoven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e359a84acf0cac2df5f2ee7569ea07a0cf9a1be7675dcd27640bdab3f13212. 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/BE6F51500730.