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 0x5b62b7b3945caf1f9464f2636c4c0401b3e68b83dbf5864a2087c5a6c7eca325. 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/891965b5-3a57-4dab-91de-7b2f95664340.json and https://artists.proofprofile.net/proofs/artist/891965b5-3a57-4dab-91de-7b2f95664340.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 0x7ea1c727a3fc6d7dd1338d08027105d9ba9ee47a9f24bf45b48614fbd646691c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZMWW2354692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e9e83d0b374ae26f93023cea99b1dffc785627411a2266d5d17030ac6e48f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMWW2354694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed366a3c09e6bb74757d44542ca97da5806c8a523fa0757ea0b85925f265935. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMWW2354697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa477467c1a829df522ac96fdd7e922d79b8da447066b0b25544c73307ad9d9a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMWW2354698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628818640db0e1e6aa9f7f17d526745797a9c14b1b8f92a630cc375b79134246. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZMWW2354693.
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 0x3e0ab716cedb8aad12c1317fdedefaf0ff371323fcded877f4f23ea54fe850a7. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZMWW2354695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad590e6fc527bcf261536f39877883a126b34c4f653530f1aaf33578e90a0d32. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZMWW2354696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684bcb42c12c0530070e5f69dc8ac49f9f8c419ef620994a8a50f937725eae2d. 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/QZNMW2223642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584f29ac4f686326ff345129544b04c022d40daccb9c591ad3c9902d0a938ec6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNMW2223643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fa414c2b20c6fac0b1de28398e344c4ffc1ba1e78c1e5748abf61eb833df20. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMW2223644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9df728b4a485788894bf318692a8afe75823828628b7c685d3e041041b93e95. 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/QZNMW2223645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2403de9db690436849bf233eeed02d8439ef927da1d3c581637f349b9a38e15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNMW2223646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce980e0d6e5eb8a9defc472c848e3e0c2e7e09f7bd49cce7e3c68ddcbbc31661. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNMW2223647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292bb4802aedcb715fe60cd76cc53bbcb178efb2fee67d974abc118ba78baa0. 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/QZNMW2223648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f8dfe917f6fa2706321bb69fd86c2b3ecf43e6f5d21f99bcbb0918aec54bf9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNMW2223649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0294b6d7c398f983df4ba19e38f87df29418cfeea559f0922f92a09272ac2a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNMW2223650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28183dc28a1403903192a1c1bffde257d4c5b17b553fa2dd0f91ac1f92d59e02. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNMW2223651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fb793d2828f59772a1288357277bbc07efe10d97614aca3f29487867ee970e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZNMW2223641.
Its All About Party Music And Friendship
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1154c555c0b4a8c841caed2eef99ddf4faebad5f055623cda947c65f0b37e91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNMY2307770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21ba5c539b9f12b1191049a7fa5e24376f780150d1a8513ce1d3596a6a9a91b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNMY2307772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a4ea12b886615acc88f97430db2c61d5b0f9c0c718dd50de0008730cd01e0. 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/QZNMY2307773.
It's All About Party Music And Friendship
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f48dd1b42def70690226f64887c13e5e8d17be2dc8cac95d647d7373068fad. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNMY2307775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a183198273707c92879787af3f8140ac2e3ef290806b8515c343596fd036ea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNMY2307776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de03dd1eb9c17f7067a87e07c215f83425a9155041bf67fddb7c2993eb7e14a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNMY2307777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce31b7624d3b9dfc0fb5eb87e217d63958c6afba41a0500c29dc00e2825906. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNMY2307780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a2ea682ab1febbbbdfae444d41ff6e620bcf958d2906476c5b8a234262e64. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZNMY2307771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89ff4e7608cac396ec0d0ffff3eea97286f07e355bb31f496f6eea53e06d9fc. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZNMY2307774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815433c64323b59980e49274c2493e788655951625a0b11c51335e1f8511548c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZNMY2307778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd686d6f0a2aa34125417d54c175d24559a42b43166930e49117de1c63664b022. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZNMY2307779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc6e61d847e1cc780c7ae42817fa228c86883a2fbf35f3a8252f79438db402e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZLL92367812.