Ava Grace Kolker (born December 5, 2006) is an American teen actress and singer. Kolker's roles include Ava Morgenstern on the Disney Channel series Girl Meets World (2014–2017), and Olive Rozalski on
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 0x5b76e2ca47f00cd52033e94e7b8153260fd6231ddaf643b2034e9336be307497. 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/55923422-4d18-47ff-aaad-1b969520d5ad.json and https://artists.proofprofile.net/proofs/artist/55923422-4d18-47ff-aaad-1b969520d5ad.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 0x11f13242237f5cdee4a7668784a4a6bc97475b159480318707680aec8c941063. 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/QZTAU2484846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9826dacd6f3ed753ea931875aa992721fa15d9ae0b78a9cb77acb77c35f014a. 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/QZQAY2319388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc03aba9ddf8f8119e51f20e1f6f59f3fd12d1556323b45f4235abf2268f92e. 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/QZQAY2318578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ae6f47139ccf8336d94cd9c75243ff2cef59cf68e3b8ea63652168e03c6297. 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/QZQAY2379934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630e73d761051ff1eea1a78e4849c670a9127cfe22da60d7fd03f35713046b14. 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/QZQAY2360025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6f797f3dc29f4713208e471e93c8171841873ede0d72b594e0a937f289479e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:05:44Z), 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/QZQAY2343008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09df5bc02555d9d9543d78c2261e821cb720fba9610c46dc71f01a2545380b83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZQAY2367438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f756d1b489ee9c8652b6259511165a2792871ce70ef7fd9d5f4ad2996d78137. 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/QZS7J2245244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0bc9bc70f36481a3f6ac3957b65121b7b0ecf87362bd61ff23674d8ffa7bd7. 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/QZSYP2176289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e4d754d8c5f7240f8d37ff46afebdd579daa4648af8ee569661465f49aca6c. 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/QZSYP2114181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff288b8275d42f22f7440ea89e8452b4e7c5f5fbedec99cbdcdfcfbaf5d242ad. 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/QZHN82000933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ab812ca646fbeadb8209cc53bf7d80f1658433ba1f911f1f327df1b8179cc. 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/QZFZ22021906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3886d51464477cc69a20d16709cd046ad41c63b44d70d1344627806cb6ae39fa. 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/TCAEG1928783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae92511d40d2c506721e20fd616c51764c416e636aaf9dd135e91704cb09d6. 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/QZNWW2555648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374052546f9ef6f8fd261053d51bd047667250f08ab29593b6b2066a4b84b43b. 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/QZK6G2551691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbd1b36edaabd2ac49006404ca4af623cd62a4b4f626f8d0ade2cb38fc67608. 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/QZES62570377.