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 0x3a4724655e168058b1261e23c716134ed70fad845d606f77e2b9977e58158f84. 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/715ba5d6-936d-49f4-b7a4-4c3b516237d6.json and https://artists.proofprofile.net/proofs/artist/715ba5d6-936d-49f4-b7a4-4c3b516237d6.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 0x3d248fe8f753159ef53d32cafa4dd13613d7d6761c01a0e0f64a47951f8e3c73. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:10Z), 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/CALVP2492768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46e35e53b4e0f8a83b32c22458c21240978e68c9589e975de5035c8022bd14d. 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/CALVP2492762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc142ac57f9ec61b38345b861dba14e57f8e6b5ae6d74f93a4f1180e6b59f3c60. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/CALVP2492761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b38277a7b7bbd1218c0fbb77620fbd3a9edb1b5812341c3098bb0869a0d07. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:30:01Z), 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/CALVP2492763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead41fe3ebe7b62a79ed6883fb6a90bb8acd59f13809934637debd91682072ec. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:02Z), 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/CALVP2492766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8303f76a23f826ad13c36e5050518e2cd2517875b994eb8063522a0c27bbddd2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CALVP2492765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa867b703bfe37591d1511fff53b8acff453c378ab432a0035236d67fbb6b6c09. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CALVP2492767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954bcf6b6081a2ab355d6bbad1a5e72f81087625be6c81f186367d6ccbcc85be. 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/CALVP2492786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ffe995b230b65083fe25bdc079b3aa6f00a8bed40f53ac7d35070ca183ed9b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/CALVP2492785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93fd208e4fbffc5a593bbe49626c9a635c4f0cbd363f65eb565adf86aad842. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CALVP2492782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d13e6051e19d0bbeff16a50bdb0097aa0420cd23f10bb18f06af6148351c87. 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/CALVP2492783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd3aa1e4ac28d0351945933697972e4a8e3e46dcb7b0bd8e7f662c27646a1e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:12Z), 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/CALVP2492784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6deaca3b46e0133f27db13240ac09c2583bbf30e0f51f7b9b9eacb4ba079cc. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:04:51Z), 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/CALVP2492787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fba41c49bdbd1884ca7efb916265274a19985c6547779d6b4fa3322d5fb7370. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CALVP2492788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f5c1a64c95671d09aa3c3cb91f0b5b8a7ef626d0f5eb81aea05737de82df0d. 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/CALVP2421886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f26fbc05dbf938752e905aa5db53833cc17a6d63ecbe3b18115a157cf61aef. 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/CALVP2421887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb8290c92d25c38f274a30e32aa0176812bfe83b6ed1fc9c636bc4bba91b139. 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/CALVP2421891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0871582f6bede54ad3a6b2d92826a9bfa7c64467f65891b426ea742119e5796c. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/CALVP2421885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03d9db27ab062a2d1f48e15d757d2dd3e2f5e2be3c9113b00ef89b1ee12c8e3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:24:33Z), 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/CALVP2421888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae8f2541e9a1374b936f5b35240e1ed85c302b37689b6da5aacbe538c9d270f. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:53Z), 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/CALVP2421855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86125eb90695d56019c8d52ee49d6e5fa7097c64ff27da982881129dcae2111d. 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/CALVP2421860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588a820c0502a1c140e2d8306a21bb17bd51deec59521b52e1473e6138793894. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CALVP2421858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b32d7a46fe0e781b91aa8deadb0b63815e90df5ddb3a3082cf98df1efdb812. 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/CALVP2421856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0efa6560d38548f0f45f54ac93cfe0b1ca33092ce0a91015326ce94ef8a343. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CALVP2421854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3250d78c3e91a3d04f3ed252f5db0f40645b8a085eacaef5fccda9f3e8822793. 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/CBEYJ2463145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3198f33004d2e41bbb1120532c9f4a21999c43002aee6074b02077e78f8261d6. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CBEYJ2463140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa277d5891d5f3849fe0efa6e4dc683343bee898df80911bbbcbbd6590aea977d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:19Z), 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/CBEYJ2463147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee6d967e4b5e0e25c38eeb0d043e160266f6f9822f06a21615e992ff8981cb9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CBEYJ2463148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8844abf63f177302186f9690a1bda9bb28bc8660196c18567e26031a292d99ed. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CBEYJ2463144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0053a3121481f61168891bc49f275954be00582c83542a2c556835ecde4fbe0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:30Z), 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/CBEYJ2463125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3366cfb0a7b81068b5e4f9d71e948ed49f5f6a8d2de07e2cdefaa49dc46d88fc. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CBEYJ2463133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7b76030a584ef596e64d9191f737c7f0180eb9d398677ac1be71827dbf3fdc. 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/CBEYJ2463132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bab044246b03c05f22fb21533c606f9b4548b83a664072051f2f905a07387d6. 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/CBEYJ2463131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02d0d2ea2e81222629748c283ddf37a3c264e48a1577a59dc54a9707666c858. 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/CBEYJ2463124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32bc029f914348e67083bddfc4c737e3a166fd89d1a3f2b76f56d1afee99571. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CBEYJ2463201.