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 0x556e5de8ecac1564602155932373467d3fe1188ffe57604bb41bdece7e040ced. 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/996d7da5-fc90-4259-bfd6-c4d8bbb146eb.json and https://artists.proofprofile.net/proofs/artist/996d7da5-fc90-4259-bfd6-c4d8bbb146eb.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 0x6db9c7ac1a3e3c79a92e819360b147afa90a6ccb86ed93bb1f357cbc2a6d32df. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEBL30900854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6ed8b07df9e8121e41d404f4d0f22c1855849d58db7219e82c9df1bca9a0fd. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEBL30910622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662ad9a0ef1e45a68ee37d70c8c3c4bdd13dcbd7f57a5587e60c0e59cfc8187e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEBL30900823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d5d6df863078c84a31a39b8d0071591a970aacb3da4597d42a1e740aa95e2f. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/DEBL31001052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a67cc4d51f80aab20afaa2bd37196f3a55b0bd91a3b27c149447cee5f1b54e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEBL31101192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc8a6f3c46069c783f81ed4cd435d2ba97ed8840d15e0e490f0636503b08a60. 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/DEBL31101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6480d64c20bb835911b354cd959a8c687f1061cafa63b07e1a54b10b4c00476. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEBL31201381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490b6fe8334f749e5fe31452fe4f371dc7fa8f10db7934ede87d252402d0d644. 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/DEBL31301821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14000d646a6ec37f65ea647d3bdc4a64e48e11f25f8fc45654cb9171bcf34ef. 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/DEBL31401934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88771ca4780a54c24c80f500bde51cfaf7d83626b4c6a7949b0962803b1fdd76. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEBL31401981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14000d646a6ec37f65ea647d3bdc4a64e48e11f25f8fc45654cb9171bcf34ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEBL31401934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1a7be5f780376118880f53169c480075af6b00fd77aa455427e689bd2847c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEBL31402191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eca57fa1f428fcba0e7f8b7bd27141c77137d26e12621d7a15bfd35884a5eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEBL31402192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391508446439636ea1c2c293e4f7cc818cf5df2cc349d831af59fd8ed958b06. 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/DEBL31502721.
Die mit dem roten Halsband 2.0 - Vox Schuffle Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff451525e94ee50ba2b6dd8fa9cc6fdd87ad7155a9a925dbc183926e2d58b12c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:50Z), 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/DEBL31502723.
Der mit dem roten Gummiboot - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885f63d5b2a085f1b42ed93cbd003d8862a3b510439018c6d8216a241381ecb3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEBL31602831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec192c7328b1cf1593ba890ef14a97ed3ca3e84e82d89bd76e95258944e16d8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEBL31602981.