Kil or KIL may refer to: Geography Features Kil (body of water) Places Kil Municipality, a municipality in Värmland County, Sweden Kil, Värmland, a village in Kil Municipality in Värmland Cou
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 0x2c22951cdb10f7340a6e68fb2af4d462fd6e85ea92c2659cec39b8b8e4409059. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6951627-2936-4708-a1b4-e59b38d1732c.json and https://artists.proofprofile.net/proofs/artist/e6951627-2936-4708-a1b4-e59b38d1732c.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 0x80b0bab7d3900a4b181ab7830d96dbeaf7379408499358d20da9b1b631d9a482. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM42K1809157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da55155165b50253c89998bbdb6e75e59411d4b16d5992466fc96c26f712726. 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/QM42K1996913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c77e5b1f309d201fae50af8e38b1ca7df0e6c29a5cb49f7664265a09e7d5ba8. 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/QZHN52228649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e55c0fc843828963269b9b536fb24ad9e24e520666c1bd0cef4779a1e3d30d. 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/QZK6Q2304658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a7a54288a3c88759ee21dea4af698f4ec26b14c7cecf1fc53f4dd4df95f18. 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/QZMEQ2111087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc5e92d0063b4923f5cc2f14093fbdccd7c53625cec8d621178a23262c2ac11. 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/QZFZ22181519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcc8cd3a7b8a0c56952bc9af7ef4b0e8547a201a0c30e8b3316d18d35600edd. 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/QZHN62150055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968500f846883432f75bc34ae68e71cbd24058d3a2b5eccfe409d1558de7b67b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6M2141576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089ce47c8782a187cb103c6d0f875e80e373dd18176e0d0ca9585c9bc50e4c0b. 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/QZMEQ2111089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aa95fb94a63fb01b8cf81a10b2e6bd4231dd1abe199b17e1e52d63cbb7f308. 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/QM42K1936660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe806f785bd0a2b79b57f980aeabbfab994093f334665def9996a8b3ce2eeef. 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/QZMEQ2111092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7e2abfc40c129d5458676298f131fcdb489c4eb593a507dd674946808daa30. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN52528619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6493d4aac39d95f5fe1e01dfcaec5333ae5146b3f1e4d05adee1c48aec0e5ac4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6N2460441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cf5beb36cba52d8f8221a2e22d443eea1d0ea4a445ab6f2ae27bd1145b5aed. 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/QZMEQ2367602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc76692cc7a9585c10d117e93c8df81c2c2671fc774b05731013ff7ba168761e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZS642255815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc53311dff4aa79ebfe5f36215897184a1479a5a5bac457b6fc6460e8338699. 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/QZK6G2110217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968500f846883432f75bc34ae68e71cbd24058d3a2b5eccfe409d1558de7b67b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2141576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcc8cd3a7b8a0c56952bc9af7ef4b0e8547a201a0c30e8b3316d18d35600edd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN62150055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f578e8115721899a145b06c4cce98c14a2e7af292c4f28645798432758ecd9. 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/QZHN32119722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc5e92d0063b4923f5cc2f14093fbdccd7c53625cec8d621178a23262c2ac11. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZFZ22181519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebd91ea10915f5bf16b88020e839b84ed2d898d3d4ca8b3b763336b40d23692. 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/QM42K1974590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aa95fb94a63fb01b8cf81a10b2e6bd4231dd1abe199b17e1e52d63cbb7f308. 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/QM42K1936660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4507be17695106b03e5678b043413915c146c181a97d2e713d8888efc524708. 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/QZFZ72160193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b06054711603fcea7dee47176b8a8189e25844fce338b316dbc03df958d60e. 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/QZHN71949444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30aec7c9bf44ecb77a9a4783da470e434e9f9b530a6a2222c50bc2428bfe7d2d. 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/QZK6K2062858.