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 0x453cde99ab61e0952fea32d873dcb907bb80d6b765816facdfc12a213c1a5fc6. 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/220c3915-11b7-4803-b341-d893551a6b5f.json and https://artists.proofprofile.net/proofs/artist/220c3915-11b7-4803-b341-d893551a6b5f.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 0xae298d81048944e27ee32805de2086f065bd1bcde50a15d62b57d31d45db48fd. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PLI368824210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f2feba1a9721a94e4f42bf820c4b6ca8f1732349622f589b55bd157bf1a7b7. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/PLI368823550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4839101092102655fe451e7d69741dd13d1043a7eadcd9327e0bb06729454b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PLI368823990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc1d377bdb7f51269f117de9240ee5dedebe41286e42ab323eb2a62d67f7d9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PLI361725320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061424cf76072b011a2a8823655846f3f7c02d9024a12a7fdb54a7f26f29eaab. 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/PLI361725040.
Chciałabym spać z Tobą (Black Due Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e493cc48932b2c5cc6bc592cd5e7f474f12c008bed71ba165f97f63c44ffba6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLI362411030.
Chciałabym spać z Tobą (Dee Jay Crash Radio Mix)
Chciałabym spać z Tobą (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bcee2e157310d4db3792c47033d3fbea6f8875945574bacf0bdd8291e31207. 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/PLI362812940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89847d5839e37ee164657ed122a6d11c7a77d44e975a035851fb4ef6106d9cc9. 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/PLI362812980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2fc4aba5d3aa852e8b905f79dd4effa05820a56f5381304dcc3f1ebb759b7c. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/PLI362813020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5fbd12314f266c9855e1150ed0788469a9b271cf32dc67fbc19ba2d6555ca3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PLI362813030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134a9edb94ce49fff8023263f70afca068a2ac7f00ad47651688a4065f2e1dd. 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/PLI362813040.
Chciałabym spać z Tobą - Dee Jay Crash Remix - Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d656d12ef5186d56baf310ffc414949b6021d6429c340f3a5114c557ccf0be. 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/PLI362813070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc974ea3399f054658f14fc082c8789c71ba48f7c39075769f5806eb948504d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/PLI361406810.
Przeznaczeni (CandyNoize & Fair Play Remix)
Przeznaczeni - CandyNoize & Fair Play Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43cf681c0a09cbedbaa64fd794369310f969b6ed679b79308e66963c2ed80e7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/PLI361342640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b40099688428fe898e4d9f888fcf419878c74239fdf4454c1e6d318179d7d3. 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/PLI361958990.