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 0x5ff47f6db2a373adf937debfeee37f99bc62452fca36b2558f0d7857fdb50efe. 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/46ebef08-17d9-45c3-9c21-ab63fad53d67.json and https://artists.proofprofile.net/proofs/artist/46ebef08-17d9-45c3-9c21-ab63fad53d67.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 0x7ec35f845a19f51d08f3865cbb46a51109c2a6b5b54117b3b0819117edb4b5c9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:24Z), 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/PLC691600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9db12ecd333bab2f729a4303341042c06363eb42b0b2a4e3e5ec11032b13c7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:19Z), 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/PLB570500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc2b1c582f9b6415faf8d97901b9b6211b167bced5f4034bb871ea947e2d1b9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLB571700986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cafff6ff7e620a5583a53ecf05bc9ffd5424e5c748fca9ac8927f31a9ca993. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLB571901180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb39c8fd7f66a392ec5a1666c4f1ba4e248e7f596e4fdf12da940b38bb6c2cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLB571801141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af4aa6c3ba336cd452105729439b93c509dd48e73bda8ca289973c3d8dacaf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:24:15Z), 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/PLB571801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146eb3a747e75803801256695ebdae6b9e048c05480d091c8e756d7a5562c298. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PLB571700899.
Wrzucam Na Luz (2ND SOUND CLUB RMX Extended)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2612db444f4d76bf2b1b8d6d815a4c6b2515b9cde7b961dc3c6dd2569a3a2a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLB572001314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fbde4bfddbdf44603605aa493d38cc6dd3bd5651f52c70bc3504d075d1ba3a. 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/PLB572101354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819f8cf70816013e0d6d5abc1685ee292149eb1bb7588782370eefeea652f0df. 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/PLB572101370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc0d7808218199306347e88645339879e5dc30e80197271b02dd3e7d8d2fcb. 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/PLB572201384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd52446403eaa18f8c863f518dedd6eba0fb13987a63e066761288b961a2c04. 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/PLB572201387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d00da17d3bb80bf58c1ec461824fd379bc56c927f9bb948ca880f4c03839bc5. 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/PLB572301398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66cafe55694deaeab4ac3f362d5822756d3cb71aa4b2e3db9f8c4e232caa70b. 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/PLC062371683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66cafe55694deaeab4ac3f362d5822756d3cb71aa4b2e3db9f8c4e232caa70b. 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/PLC062371683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd52446403eaa18f8c863f518dedd6eba0fb13987a63e066761288b961a2c04. 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/PLB572201387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7a32c775fa35d0c9ee714ef1779d68e108dc90d49c001f25d43c645d73bcff. 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/PLB572101359.
Z lewa do prawa (Balkan Remix 2024, Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002295870ae4731fcf0fd0e8ea12e501cb3734ebdfdd769a74dc401de93da922. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLB572501438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f9afd1731dd5ea168f78d13520def057b259a022810912f7f6c975c390d40. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/PLI366596730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f84514ab95a1359b2668c8a08d7f97e2b0a047a624a99350c135d29a81aebf7. 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/PLI366596740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcd17785b79bcc4fbe48036455bb7cac0517ba1a11af679f9fbd9a84b8ca918. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:18Z), 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/PLI366596770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd386fa691a2656cf04d84ea1b97e72b4c0b6274b1f51140bf265e553f156ac. 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/PLB572501440.