right|thumb|Human jaws viewed from the right The jaws are a pair of opposable articulated structures at the entrance of the mouth, typically used for grasping and manipulating food. The term jaws is a
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 0x569fd0336e57115831c8bd29cfc7cb1154631f3daea79606667ea68a85234c64. 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/b7da9de1-ed3d-440f-92e4-331921d0e7dd.json and https://artists.proofprofile.net/proofs/artist/b7da9de1-ed3d-440f-92e4-331921d0e7dd.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 0x5bfc6c709828211da4cd2f22ee9f1d55dc9adc6c442ce3912b65fbb01e01cc70. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZFZ32435608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3b0a55d2459f19d24353974d59086a64f9522865ac44e059388ed1069c450b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:46:24Z), 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/QZES82418609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f23f074dc5b110b38702d9d683f5e7a240ddcb27faa797798a2dc918af693. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6M2405625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb888bf231fe5858f17ae35f319151a1d887cc065b0d3ed322e3a53f058c4dc2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZMEM2443566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48488dbfbe091ae4c97b33313e9c35570a486552623bf9397a996f12bc0c6e5c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZMEM2443567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4d42ba54e08a7a1f976797a88c5802573088138944bee325083c95098de968. 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/QZNWS2435861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e035c0000f72de38313bfeb1e864bf6ccc696d562ec5212390a8043020eab84. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWX2462759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b66927b8480b01e5b9abefefd9085ce6f8f1163a78eac5698d6240e8417de. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTBE2476426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea76484639a416c5d02d80a8071b381880f97275757325ed3470851bbe5329a5. 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/QZTBE2476427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95884d8e6edcc356a3d31248e57bd40abbe3a6ff2b285548b8c15c7ae4e3e7b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZTBE2476428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6de7304bd3bed623735e82189dd050501d38ee373a156e7267a5ecef56282. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBE2476429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcda55ee8d9e77271ceb4f5ef049a378e3a50505d15ce1705a8178f8b1d109. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTBE2476430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62627512e8a49f2623d4292de497ffec431eb1a548f3d4167abbe8fc4de1eaca. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZTBE2476431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278284217b876ac83293fa01666c8b81efc7fec7df1206be81b1ba4baba9a56f. 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/QZTBE2476432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d9da4c5938a9461c0677af1204a521b0a938bd058a9d2d5dca6e0f37720eb3. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZTBE2476433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7874bb1ed153555fc4c76aa7652bade0ef5a76793ca164ca3248549fbc66c43e. 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/QZTBE2476434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e334b1582c283386332cbe1a4b2747840a3b9c90a45cd0641be82a5925147a. 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/QZTBE2476435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e014fe74d9ba5b910d3dcb029777d475da3b40cff76f96d447156a09e68656. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTBE2476436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89518633e71f7c4bf518fbea949029e6dc0605b849f0fd392c2ef39b08f2c6f6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBE2476437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2cedf1000ab8b5ee2c398a68c71be23abc4e3180cba70e116101bafad37069. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTBE2476438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2487dc7e3344261fbc295c0718311389a545d4670ec7207bfd36dd5890fe3c39. 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/QZTBE2476439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcaa41756b1aba66f831fbb6fc04b731379fe89f5d4c8aee3bd8d4fce93debf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:28:45Z), 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/QZTBE2476440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab0c0bf603d30b458f24f067e08bbe71fe73e590358a4bd3be89734f95618ca. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:53:42Z), 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/QZTBE2476441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769a0b422f7c83406895d68c57079e157c96369b5e9449b68689e3f897e67d5d. 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/QZTBF2496634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81de23d9f34811e53a7f5ccf7883e29df5fa4cd77b83540b348726bf19b37b6a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBF2496635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92bda8cfb16f7990c968b623ec1e2ee965149951c67a143e4fdc3173c45a268. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTBF2496636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944d6a90d496b5daa6e4b1ce1358e9929ba1be6a40f8a83e88b86bd6152e0a9c. 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/QZTBF2496637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb67e6c15825622e285769f49cf61af1a0fbc1cda1fa4e39f60d00c0f305021. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTBF2496638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb80160c2bb1e1c0662d6e33cae5b04a46ba5c9cf6bd0ad56f6a6ad6bd4f34b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZTBF2496639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a525725d2cd7d891bc9c747afcc3c3b771c7cf292e81256cf527fc907ded2cf. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:32Z), 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/QZTBF2496640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f51a59efa4c95ba87606ceb302d68c491cb593f26ff8c177677553725c5580. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:46Z), 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/QZTBF2496641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c62373f027f108e4ef4dbd3aeb65053c8d91a7608faca526bdac0362aad844. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTBF2496642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05b124141918c751fd3ed9b852e5c31b10fb2b257f344796545253dfc852a52. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZTBF2496643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc880f381606ed4efd34fcceb91fb26f6363c1a7bf9e07e09099cacbdec72d72c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZTBF2496644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e57766c3bab70e190875b547848b09bc61e6f8910e573a07810ab30bb9aa728. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTBF2496645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172566d9c1272f38a87e7096a84e80d2f28b87f07e5571d40ac7defe1b54e1fa. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTBF2496646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4b0759d4e60c213b79fec903e8db311009f1039ac2b737c17393c8d14d4dae. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:47Z), 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/QZTBF2496647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b1180207bd6879854de5d69fb4709da31a9cdea9b6441328584d5635d49940. 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/QZTBF2496648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c93131cb6e8070c7e17c416bf60788451643627d74c6e254a9693b0092871f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:55:30Z), 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/QZTBF2496649.