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 0x78f8111924a355dab50529931270e5656d663034775c10308d782bd40a6568ca. 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/1c607d97-420e-4cb8-8938-e45626103e0d.json and https://artists.proofprofile.net/proofs/artist/1c607d97-420e-4cb8-8938-e45626103e0d.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 0x38598bd19e8a6d8e236064e9d5f1445e9d835af45ada5b032dad6b12afbf80a8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PL77F2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3721b2f3af34a818e820a242bcf53e4703364da53e984bef98fd5b196a87722. 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/PL77F1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd366f50df1a821fdc4c2aa9366723e2791d7636efcfbd0293b0d98a2abb19b1e. 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/PL77F1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499187941420cf785e46c92e21352b8b16730ad4b02b5d1218cd27764c0c353. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/PL77F2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ab682a89fe0ef458cc05d7d9ff2d3f6116766f64d852c0f2568e8c9a626007. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PL77F2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8585c04bcc6f4a2608009d73af129978f3a0685661c82cff374d3d839d55c287. 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/PL77F2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893d3faa33d33fabda9b54cb2fa5425f20c4ca486fcca37824bed4b297c079b7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PL77F2010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6012d28df1988ae778aab2a1c586ed621b21d0f95f901c05164e3bf7f178190. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLC592300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b761847168d6e59c8f3b74edb5abd3c9bdb7034af254c6befea7aa0b3df5724. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PLC592300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f2e54692e711eecf36c4532f212b496b5cc2ecfd948056a7b1a2dc569e03a7. 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/PLC592300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a716b85dedca19a7a6b4c6654e0ced5681205f4eae15f5a53ed2cf39fdd8c42. 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/PL77F2100002.
Niski ton – projekt Ogrody Śródmieście (DJ 600V Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c943c797e6c14113ab3bcfc380edf4d0fb10d38be9b875ac5c49ad6414db5c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/PL5E72500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78dc30e1d7305a4400968132215fb02a1b7210209af61e7a76ec11a8c543708. 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/PLB822400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdf7f9059def517c9cb5c57cc1cdf7bd614a51d0a0b4ef4d4c2cc4a429dafec. 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/PLC070811003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0a693868534326aa5afea603e39e5f07b971ad4258de8598a3fa7d6e58496. 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/PLC280700004.