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 0xd350416933b4058cf2911e5a3259c59c698606093fa67949e5ef65e1883290e0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68c578e1-4333-43d1-b1a1-490d552b835e.json and https://artists.proofprofile.net/proofs/artist/68c578e1-4333-43d1-b1a1-490d552b835e.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 0x074771fac84dfbf7362b1cfdfa51c3abc4dd9c156bf63eac33c3c311ea5e19c5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWS2092467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1a9249c1c1db534b7e5595de41d9616d453dc9ebfdce426bedeb32a7dc98e8. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZNWS2092471.
W górach jest wszystko co kocham, cz. II
W górach jest wszystko co kocham, cz. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20be6207e11f236d7cc35f8e570f6389715a663014c387c5982e1772bc0a21cf. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWT2011535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5809989db65df450258d561f063d976a0ce4fd3d6bde63235b41062b1523d3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWS2046962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da2fbd48b2cd30f3edac5ef62a65f1f4bb35d9f8df8034f18584d492332edaf. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:24Z), 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/QZNWS2046963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbf2fe2c2bca65af05debf6239a90a255eabc165c919543d25a996dd3d01e7c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNWS2046965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3803a40fa009f068a0db307590445e537ef616cc088861121eb81a69ad384d2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWS2046967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b56aced96db426df9f4b6389b9ad43674de70872934c384237f8e67f01b945. 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/QZNWS2046969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b124a4faa2932d28f9400b394fbcf82ca267b9c0c40684ff950a2f251fc6fa1. 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/QZNWS2046970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a12d0b390b546e7ff8958cec96ace63f22194de8f859c16a39f571e8c9e2f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWS2046972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7460e30e0fc23ecf00d7db9978935cae9a14af45cfa89c4226823323b07b1571. 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/QZNWS2046973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5f39d4c0e98ddbf7ea869093ae43655d61811d132fe1ad478143813a64561e. 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/QZNWS2046975.
W górach jest wszystko co kocham, cz. IV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc31f25d45f3ca66f492283d01b845bbb57638c3fea2cb5718025b4cc6aaa2cc. 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/QZNWS2078857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca91d70463c400f5fb89706b860cbb6ef4eee3377056f326f22501e57111c3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNWS2078860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112d87b4ee06925843ff7d2600fd2d49778e40c16f9262013c8556231aadda7c. 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/QZNWS2078862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5414406a31d3681f45a643eb54a67dca4ef348564ac4bfad318ea3adf956b8ed. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZNWS2078864.
W górach jest wszystko co kocham, cz. VI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc989b824b3169449fae607c95f4e00dc490eb922185b3c7635093b03dfa72764. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWQ2073127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481bbe6657f805b71aa698f99df1d5f7a48a268e31f1fd7289122a5027d6ee71. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWQ2073129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d45040059930f57f5f5b37f3e9fa44e71317c534ace6982216fa70b0d77389d. 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/QZNWQ2073131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e1e8c4b98aa82d130aec6611aec3fb21baa9adda3f300123d992d6036b94f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:24Z), 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/QZNWT2013835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732a6b19225a1793fe849c619ee9e58002b6cc7ed9da8debeadaf621cb44b15. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZMER2080255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801c82d810b4ab4e0e87f574e41f98daefb7bf123ee358f6dc6529ef0c1833bc. 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/QZMER2080259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8b613cea3836a7569c874a08bffbde2a2410097168e18c8eb2c9dcf17a9b96. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMER2080260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b2f5f865e4ca65a7e492be72d826f3d69ed99222043f610c533b227befc8b4. 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/QZMER2080263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314314018de3d15b1812ea429102cf4f93fb659b50d500468edf2d8587eeae41. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZMER2080265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7ee611a7a774a435f03f71bcb54951cf5da2c27804d3d1f2d0f4136546f09. 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/QZHN92225888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6db409b6e380b7400ecd49ca86785fb70d7c13433117228d0c4ea4b09c247. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:17:39Z), 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/QZWFN2364574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd8c3571a548a54450454fdb6397caa5cdda3b489bd931579290bad851a1493. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:25Z), 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/QZWFN2364575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419055c877cedc08a684b6b91cb55dbaba4eb014771e8ef85762512dc8f2ed7c. 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/QZWFN2364576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c45611998ce3483c93c5ffe6fdf86c9c0a0f0b158d051728ad3673504d8799. 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/QZWFN2364578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca561b220c9e1d5cfef131afba807b140f6eb8f63f79630a2d08b2ae7dfce96a. 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/QZWFN2364584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f0e11663e4f5212b6bae6798f81576caa74d913445aac0bc0194b43906b8e6. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZWFN2364585.