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 0x505b6bb6984fca4ff56e483ddc2d8ec4a28c86a1eb3d239426ef62c9551a5adb. 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/07e028c1-a620-4c65-8e98-ad0139161922.json and https://artists.proofprofile.net/proofs/artist/07e028c1-a620-4c65-8e98-ad0139161922.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 0xd7db94afb85e70e0077f6ca24de3e8f1560d1772902b62918c4c379766c467ce. 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/PLF242107653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e98a518901d535f1b5cae2d51163af760388f32e9adfe4f2958b758305bf38. 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/PLF242210500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5df5e07d6afdb0e22775a539bfd02ca58dc74fd54b005f0e3700890a72eb0c. 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/PLF242413485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2b90a894d813192f661438a220b3510f9a0d0484ae6501f88f07b1365f879f. 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/PLF242413297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c90d5ec13eeaa5a1e6b48378aa40f14644a7c9d25cf84c9a0ecdbbd13939e0. 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/PLI369193320.
Proceder: Żyj aż do bólu (Muzyka z filmu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29acbaaca6b021554ea5e53e8613f694e5c60f63b12fd60133117ba114dc3bf0. 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/PLF241704647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac147cbdda9dea73800e050e0eaeef143f03d011e891dc0984a394c9682c7284. 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/PLF241704640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc80ac185343dcb099bf7d23400e0273f49fcbc3a69db5fc27ba7cc838cb0a0b. 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/PLF241704642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dc84651009fc1850b4452ce9346a492b2f25393f3177f5ba43b392b4b5e546. 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/PLF241704650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d924076066ccb893691c2eae1e0e68117f6342f6401b226c33028e6ee152c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLF241704649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a254322b6ed19fc16a1b81b666f1890255817a0cb211781eb7df173a7f2ead. 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/PLF242210066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc527b0e7d1c23586ef82a3c82ff9c0134a4b0c784733f8cf2046b88b5cc61a27. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/PLF241906555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51648c34ccd3893055ca13f4453f8c5f129ef96c40dd610819568441cfcc76dd. 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/PLF241906556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb192ecf3dfeea7bdd5cec7e34490bd2b633e557f286d16cead0a72ffb5e58e10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF241906549.
Zwykły facet (feat. RX, ZBUKU, Hukos, Bezczel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef331ec247bb11b3624b4bd2132ebb2c12ddd76b9262fbc447077e2d28a5c26. 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/PLF241906565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3055c156d5b28322d8bde8806f4c109998e79e2da568c5131cd61d2cd7cb726b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLF241906554.
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