A sawyer (occupation) is someone who saws wood. Places in the United States Communities Sawyer, Kansas Sawyer, Kentucky Sawyer, Michigan Sawyer, Minnesota Sawyer, Nebraska Sawyer, New York Sawyer, N
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 0x229f47e0cf4b3025f7ef1429711d940c3c84fdf688c0039277970e87f774a2fd. 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/a73e5aac-ee7c-4e8c-8f66-170ee3b531a0.json and https://artists.proofprofile.net/proofs/artist/a73e5aac-ee7c-4e8c-8f66-170ee3b531a0.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 0x774742bf4c4163c07365c8a4537870628c8f9b225cf7b705bb9b686bb49b0d84. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIL2478894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da6c8a6f512d8c58faa8db9bf5d93e6c64239bf8c9ac145a59124da4bdf660a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAHQJ2562460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093508430eaf6cf7cd65f949c3e4a06be405d873d7978e0b6e86f02f86dfa7b9. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZWFW2421547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa235491a513a51d04056cd1a4163f00dadc7622b6710f4519d49ac406572690a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFM2434992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b53cb6f40079ce87dd4e5253b65cce561f84d36a7d636e5381c2804414f50. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:59Z), 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/QZWFM2471361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe31b2828f46fdbbb0394b7380c8e77669b8dd412d9f2071a22c35ab05f879d7. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZZ7M2460238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aad6f9e12a3b6a2e345452d52dfbff6020d05e4b447aaf46013f0bc8f9de9a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZWFM2429540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4216b969097a2c0de31f8eed98495d14e22e48e1aa8c33c8c7f3ebaa2e2aaa08. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWFM2433172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff0bcf59a2e83ab20699625d8d7d5fb1fa47eaf8b372ea0567734308c6ee05. 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/QZWFM2434993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9180cd50b285e93eb0a45bb05c6a9fe9942c9d902c4de451e73537778ba45df1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:55Z), 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/QZWFM2471363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997f8d882b38e1989f356fe2b432a171adfe433c9c2485285d5062ab7ae2fa2f. 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/QZZ7M2460239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878fe90f83098deab15ce92a2cb142ef0043542002662781f32e985c374e2a15. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/CAHQJ2564505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7440aa23180041e06e8bccc53ced68253ef42029070b64d13493ad6b0191fc7b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CAHQJ2564506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a651ed6ac7beb926f4a07371679dd72334068b8772db03dc584c15de5f18e6b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZMEN2501842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219eaeb503852451c9678290b413eedba7a6b42a7499b7048dd16593e3e77d96. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMEN2501843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba0a566e0791b657c98e04e8720622c41a39678c37785d0f65e6e55522107d0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMEN2501844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c424e13b725f21b587fa44bc4a9076038d99cb300aaeacd85724f3aa924c9e. 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/QZMEN2501846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61546ccec6fc2bc18f6d22ba415e872380b0900cd0c787dabcfce85beb47297. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMEN2501848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43b455203d05da68fa46ea947ac0e4d36454d244f43f8cad5495b8e7865a477. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMEN2501849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efa623e21729ced95e26f987bac10e2bb4587daa1d887191fff3f6af330ac7c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:12Z), 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/QZMEN2501853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2492fbad0229e97b3286a2b88a9e400dbd8ecbc34aa15d061f10109e95aaf7c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:17:18Z), 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/QZMEN2501854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4249df58ca20d44b523d88ba9712cab8538f123d27c7574039d0d9af87554a65. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMEN2501855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190fe00499627a72342970e7340347e6495f9e34c0837b7bb9df4c08a72c0d9b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:58Z), 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/QZWFG2507661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae1694d2bee1e70ef4ccd48210f01e69405bcc330753d3b88e64990a02546d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFN2505639.