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 0x0bab90ab1743ce5003a5440ee86a25774f8ccf4b3fdfedbd27e026fecd9d4269. 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/aad8f076-6538-43c9-bab5-768cf477ad95.json and https://artists.proofprofile.net/proofs/artist/aad8f076-6538-43c9-bab5-768cf477ad95.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 0xf1b89e92fd0b2b55097ccc2ccb840006f3d08bac8bddc7feeed68858a88e0262. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEA371901453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff10d0e01f1b45846b331d14f98365e2ec8d0c1e9b5e7a517372d8cca3bd4ba. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEA371901457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd1189d9b3144987a1692d7c7d779d63325f3153d2227dd97203df41623c850. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA371901458.
O Hussein's Ali Akbar - ای علی اکبر حسین
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce50cbecbe254f6fd9ee545e947a234da0dd9431276dc1e7918b09043428171. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEA371901455.
Rasaye Mandegar - Hazrat Ali Asghar (Live)
Rasaye Mandegar - Hazrat Abdollah (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655a223fc67a872a271b74db1341f40bd2daa612ea70c2ae333ae66f6583a84c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/NLRD52041926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc932d473efda0b8011720dba2b5c8d115765f1b2b89c117c298d89c3401407f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:46Z), 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/NLRD52041931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f294cb882f3e584e48a87aeadf7e5739f890547533adc5a1a1cbf8ae727d18. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EEUL32202145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6e8b004d99d4bb29646692ad0592b11f480fc55837d60d250f4dac14ed681f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:12:05Z), 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/EEUL32207431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18cf132d85ec1805788cafe79ae75c6dac5a271796152c6803696bec17aa85f. 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/EEUL32402145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ece20db69feeca928fcc25ab7d010f07b20c542da2ce8d6d9b6131fae62b323. 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/EEUL32402146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895c92c3b067d391e3694babc1488ffa4e4799375315bba54a2e0016a3d9d132. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:06:03Z), 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/EEUL32206958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbfcb10e03f33bbc7cc63e0df0e1d220b5b185dcc5c2fac27ccce640e60ac3b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/EEUL32206972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6326d476867a861ef39f527bdd0a57f278a500360a93857b1198e00149bcf5dc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/EEUL32403739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac97185b0845fab47a618078d0697bd6f3845658f4716517fd8780c751103f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:58:04Z), 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/EEUL32405047.