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 0x5553603d2711c88995ccea00772d59252a1019880ec4a708369f1557959d3866. 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/f6aa55a3-f428-4707-8d7a-f7f21fc55049.json and https://artists.proofprofile.net/proofs/artist/f6aa55a3-f428-4707-8d7a-f7f21fc55049.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 0x357cd2a6da9e07aaab7de87413b4049dc2b9f14e1ef9344c06945e55a68566ee. 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/IDB772105907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ca5c413d86a79b9faf1429f4ae6fffc0c1f3dc195d96a3e44e2c925481c84. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IDB772106027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4c46f0c343592c278cf06ac2b6de8b67216cc531878b958501d283df87baff. 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/IDB772106043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff91b7da06d6d3cad3ceaeecd1799bbf10080665769ca548d2af914e042ea9f. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/IDB772106091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49650e096f79ba8844a5782410e2e52a0f19a510851f9a01e05de702bdd2ca29. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:23Z), 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/IDB772106168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144beae73bd1d30c53b68854289d009b92591164343f46b7c7c1486d76218c23. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/IDB772106183.
Murottal Surah At Takasur Maqam Nahawand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d8d03c6ca4602e289c0d231bffaff89962d34d2550eb3d4f529049b830d8f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDB772106476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92acf8ea15c1f29fbed6008ca0b2ca8006c5c5516c156c4aea309cb74f23a6c7. 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/IDB772106475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c492b04bf21816d8c60d9ff766620c648b9a4c4ab2f35e309f26d09bf72b50. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDB772106558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c007e61a08c96468ed14d22d1b2a35589448f0349150d743f2b778eb440d1. 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/IDB772106678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ca3614f272e415487b15ee8946e5a0e6802df4484b2547d82b05fbda2258f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:10Z), 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/IDB772106702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b97fb5a6731ec5e430dbf8bb83ed299a74058c1d7404222c69231f0ff6835b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:07:45Z), 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/IDB772106706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266623a2ca70a01ba88f7bebb7e6b7db02683cf0250e59c02f7bdfae150e7dde. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:53Z), 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/IDB772106705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12733d1f195c4ff06ef2762c6c2c24f6ea58ac5c0e77c981da1526eed3be70b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:27Z), 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/IDB772106805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2475922bd4246981201b82951e43a88af70de9d4ed0ee134dd9b46c3365dcf5. 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/IDB772106870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea960400d9bcf545838c842e006e93169547867c89a9f56d255d304bb43a76c6. 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/IDB772107015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd123cd5c39e924c8d8beabb77d54da6a0d001ad207bccdefed30457708b5c562. 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/IDB772107050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1fdbb896220ecc9b76ef256dc446859432451a6a2ef1736341ab1c04913f8e. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/IDB772109022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68528310b582ef1787cd63a0dc2000b91311a64e0263fa5c30f90d7258a4436. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:02Z), 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/IDB772109020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f794975853c56bd1a9516e03bb1b49262e13f3d42da289a59a1fef016b920. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:55Z), 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/IDB772109019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a21024afdcd9eb438fce48f16af2c84a37ec49239e8053b9718657a480e4705. 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/IDB772109115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a71371e3b14cf596bac5047090cf9bb2f5cb499e84349f20521995cbe32dab. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/IDB772109021.