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 0x0d7253f62b0425265a574c73c19836b73533eabed10cc5402afef0f4eb357307. 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/a3523fb9-1e72-443f-b2ad-720060061541.json and https://artists.proofprofile.net/proofs/artist/a3523fb9-1e72-443f-b2ad-720060061541.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 0x1c4777f2f458af7eab4b56ae7dbd7a60dbcf320fad291d405c7add256dd2e29b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/PLC061403729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297005d862137e8b06f3f1a01d0d9971ba096f054db970b0978ec8cd0c636b37. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:49:23Z), 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/PLC061403731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0667a2eea9cb000f5c91cd8adc859149025e5e5a5720a222fbca23ae0e7b87e7. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:10:08Z), 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/PLC061403732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb134e333bf2e23f0b72ce6b4c8c047d5495e01379c52e953f5c6aa7332d30229. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:53:36Z), 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/PLC061403734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e092dea70317fd5d7eadecbe0123c351af1847e9bd16a67eccfe12fdadb3d9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:49Z), 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/PLB841800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8e5b67c63d0a9ad76d89cc6ff1e2c65fbdebf59126e671453ce974a5ac9b28. 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/PLA811900321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd760fa0b4185317883a6cf4e7a74cfc021dc0032b956cf66d40b17d5e1d821cb. 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/PLA811900323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c6baa3538b244b718c5fd5e66d81ab86c3953696e94cf2c171d8b77742d932. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLA811900327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24a42abc06c93ae37b59c6fe2437668061da97a5ead849929c3aae6f5c1ea60. 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/PLA811900328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382063231219b6646f701986eed938e04ebf977bcebe75c90a1cb35156531243. 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/PLA811900330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05908578777bfc4269c258787c8a43f78982ce3e89477f29f40e5e2835e47174. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:19Z), 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/PLA812000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894419dfc2d87b8eef62934542c256d7b7fdfe68d3657e12127f5ce2e5d5845e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:31Z), 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/PLA812000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5f2fd4d7f4fbedd1aa294f2c083f6efb93c760a1cf59c7ad6df21ef952e5c7. 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/PL31T2417622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e096d6d1833848acd4b534eede26579179a594c3a88c6cd041efb0da6819ae. 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/PLC592500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e37e9e4518ab46546c4ab18bf7a9d87277e5ec1d35063bf6a9debbb585ec2a. 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/PLC592500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5f2fd4d7f4fbedd1aa294f2c083f6efb93c760a1cf59c7ad6df21ef952e5c7. 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/PL31T2417622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede4a5f987e9efcfe554360389babb0d4125791fd8a375d3156d8e2f538203e5. 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/PL52Z2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a60750ed5644cc5d54ede4b229ac778a3385f2e8d9908ed18c5b2d59fd0ef8f. 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/PL52Z2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8350e0630e4d2e801370bfd255174c5c041d42a79ce405bf4138e89a15033. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/PLC592500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66ee450b58a5e5e0a5845f38b1024ca4a18f692b0a2bcb97ee3188f0670e74e. 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/PLC592500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a60750ed5644cc5d54ede4b229ac778a3385f2e8d9908ed18c5b2d59fd0ef8f. 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/PL52Z2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede4a5f987e9efcfe554360389babb0d4125791fd8a375d3156d8e2f538203e5. 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/PL52Z2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fc52c161356ce59a158d8cea97a3f55516f49da3ff38774be9e0571c82bcb. 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/PLC592500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd248ffcc0656b2b302e2f405f502de92d6d6793e3adb6dcf12c1b32662d5d6d6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLC592500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5f2fd4d7f4fbedd1aa294f2c083f6efb93c760a1cf59c7ad6df21ef952e5c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PL31T2417622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0ba95a959c42c74bbb2326dea95b745d34f0fd31657d3e0430e8230af6d22. 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/PL7702400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa439ce921812f5aae75db7db83c98b49bde753721aeedac5643fa881f140832f. 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/PLC592500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4858fdef5daee7dacb50413698185b1ca8b18fac888007bd811900e4c72054d. 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/PL31T2413474.
Przegląd Piosenki Aktorskiej we Wrocławiu
Laureaci Przeglądu Piosenki Aktorskiej we Wrocławiu 1976-2019 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a4724d71615fc5f8e231bf8d2b8c19c5fce4f1a56e9a9ad7ac7b2d733935f4. 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/PLA291900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb0dbb41710dc91d449dd236a981253f960ed1e9d18a86ac6138b030045a647. 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/PLC062114302.