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 0xe391aec8122d9b66e3b473d317577483ba83095f550f0c0c86d4ad0de30c18da. 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/25ec8fe2-0192-43fc-9b4c-d7457538a398.json and https://artists.proofprofile.net/proofs/artist/25ec8fe2-0192-43fc-9b4c-d7457538a398.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 0x4777a1b4a67e8b60a260e3ab4b64ce01c95914f030695c45b106934ecfc7b6ff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITJ790600841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd448730f9aded1b89141e20348c4e4a7ea78783aabe0de003f2f680c320d27. 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/ITJ790600842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e9d879e9c4cf793995f6c4810d38e4aea86d12f26432cc95ad65efc847b5e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ITJ790600843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f8a904a13cb3f0efb1bbfe71ba838ef6e10f965f55829c85c4436da0b77d20. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ITJ791700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966ad64b1207059a2e4a9ae2d28d93a3b8f906585f9f45633026bf65da309275. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ITJ791800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbef01866756721fc6cda30e37a1c290da03b11973ad1e11e50f04585f9b0ad9. 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/ITJ791800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ccd873eecd6ec539ba1356161967a4adfa4c1801753549e239972785369e02. 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/ITJ791800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4673f64c335e61f33c76fd9fb93be210857e6831ff2214946ba2fc535ab3a91b. 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/ITJ791800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3534fcc795602d5a51ec185b8c01dedb36acf771e0c18b9a5e66332eeb1e77. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FRX452016853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc097c11057243f251fa8f80cd145f450bc31ff7c2846531bf7ae0e8e42c13f25. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN32096828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740a13f0492989d7c5dedeb9cb3d2b305cdc8f3c178e453cef9720525d9d6164. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ITJ792100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337092438c4fc31a37eb5ab45ed095bc8a211b36e00cdeae63f7a3a8c1a1656d. 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/ITJ792100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bb7f7fa4293ca54fe25763bd3652e4a8dec50eac89b1cdf953dc8c96271100. 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/ITJ792100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3276be693d3878642fbcca8d52df8539757b2041786a5d272ee340dbc12c098f. 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/ITJ792100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17172cc9b6034d87c0a889b875933354ac39f409c1d400d6468e183aed4b7bdd. 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/ITPNL2400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed584d8c01be97d6fa8c0b5216008571bd035706f8658aed701f54961266fd3. 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/ITPNL2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7c0d103f39f8ed34f9a029a496e3c885a4925e96edc6523e58fb06f53e3ec4. 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/ITPNL2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf634f4332385d638f5fb536088945bb6c186047dece60789803d6687163708de. 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/ITPNL2400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84abb49b085fef0fe2ca6608fe250f9bc0568dcf060a8ba33e5dfff36eec387e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITPNL2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f047ef2d4b85e38628cbd634f2a6e5b46f5ec3418fda4937694f4da07e6643c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ITPNL2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54289af6e557eb6fc963f15f28c8fe8d19e7b19824e326a8d78a06e1e139d121. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITPNL2500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16695dc3bad66aaaf6af9ce9e3f2267fbdf1a0f8ada772f8a3c5906ca00e5b4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ITPNL2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54289af6e557eb6fc963f15f28c8fe8d19e7b19824e326a8d78a06e1e139d121. 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/ITPNL2500298.
Piotta Presents Go Mixtape (Street Art Files) Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e076cdeb862619d11cd0ec1f00be7f69cac400c9e24544311472bd47f40df5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITJ790600864.