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 0x5ac47c7cb278bfb5d6954b6e35891c32d4387124ff34cf534b0cc3c8d83f3d12. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13e02dee-e792-418e-b56b-b926dff4aaa9.json and https://artists.proofprofile.net/proofs/artist/13e02dee-e792-418e-b56b-b926dff4aaa9.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 0x9a2e7ea8eaa97483aa38b2f599a5e9b580fd399e05adf4d0688b59fb68f05143. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:04Z), 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/QZHN42062567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12c7266c7818293be76cc4f58ba08b938178b3ff98f1a23f5b90db2d21729c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6F2066739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112171d32fe0379532ac2c865d7a330d6c72b3e935b54e3e12e18b3617abd2fe. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:49Z), 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/QZNWT2082751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea6f6b36eb769b2c808dd3f0025667eaf09193de83f3aa6803de39566c148ba. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZFZ42106634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a7e2a3a866fc22acf25f11515637c29a45cac90af44ba8c9ed7c7e04a7dcb. 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/QZFZ72141330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee828bf0dc1caa72838e40d04ab5fd49aa5299266ea7652a8ee8f685ca125b9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:36:37Z), 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/QZES72171163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2d246569b8bd883546c5327bd616101aadcc1c8209277124bb23c2f0d342b2. 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/QZK6N2187805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d1204a88a8966e301409abe698c4a47b5d76a3af2bc7d8ec3a086c7b54c495. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWQ2157687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b35fe0f7e5d28173b30c0d8a93994ee57e9086bc488d4471943a3d15646d9d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWW2148236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf497a1365954d1e4589ab12d9eb5df9ec16f289d53c5325cfc84b5e97614a. 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/QZFZ32218478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e400b2e2a039b05d91bdbee7d84e3f4040a858d77fab480b4de587067a072dc. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA72277803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455e53e0c305cfe20d2f15a42401327a2ca045f5b2439ef5d262c753d500bdc9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN62201139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3588ac009a737ae5ff7511bbcd9e1f6bf0457714cec4dabae53fd48a823c76ba. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZK6F2289581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcac389c9bb0c8a98a25cd09d3699aeb957b6734d47b9f047328534aeb7b7e4e. 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/QZNWS2228559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331ab051bfb797d6bdc37e4cd55129e02a632bd6fb8abe23be61bff11afc298a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTAY2222423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f4df4152af2f53d8cc158c4ca658b68ae85ccf66b7f56a60b77f6431590944. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZDA62340392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018dd2ffea56a3ca7437bde38b5209457304bb48e0de020c25fd46057891a50e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6L2358284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10da2e1e72ac401b27d230e93c8a5a2499b2c6a93a4c688592fa1099d2e7558. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWS2350450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe986f06dfb13180445a1a0f38e12e9c7d961d9f1e9a46c6881567f2ff8e1ccec. 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/QZTB52396282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d712255b71f2ec50d31bfa99c3653da51cb865965dd05a4ad38effe6b91648b. 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/QZNWV2496002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6793de4c1ddd95849a76282f8a42ebdc15108022a4f4f24760154aaece97ae. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:32:02Z), 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/QZFZ72593198.