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 0x3e16f10277dac116644a08bebe8e3949ff9b53ed51687e7c1b8e2b36fb25646f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c3038b9-2576-4336-8f79-189fd9a6a2c2.json and https://artists.proofprofile.net/proofs/artist/5c3038b9-2576-4336-8f79-189fd9a6a2c2.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 0x0d761feb91fbe38580d57737a8a1f9da45edab1890bc397ea9b0e301b7b24980. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W11705107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fb38f2827c18a9d7d65adc2927c5028af703d5349798d6c9cccedd0785ab80. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:01Z), 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/FR9W11705108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8558133511c8fe11b243a35ab216bd6b58adf44738dfad5a3f12103e5233807. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:40Z), 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/FR9W11705109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdbe1bc39d5ac32d5d20b0845c5b03b12e86890095892f6cae8c99722d3ded0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FR9W11705116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dfa94238ad564e8078e64fb32e699075452d8885c1983f250d2e2976509acb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W11705117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e556cd5713f704e1baa70b6dfb34b77c9d3543194ac26d367069fb5d3a659. 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/FR9W11705118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac6f54345640012b19b65a87ab77d385c87518e5d6b0975c4abbd943cac397d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W11911155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeb4de8d91c6cc914c7ed3ef4e3e519acb6eda9bc716065c52099fcc0aa22ba. 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/FR9W11911157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0d33d8814a797a242c4a2fdb02777fb70c8fbad51d6ad2122fc26fd01c4b1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:35:31Z), 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/FR9W11911159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa528508cdd3440ebe074e4bb5144edfb3cf9a0df868b862d00fc849595ab1c9a. 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/FR9W11911161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d48d77019dcb1f45730b0ff8a134de20baf2f76f9969e6ea066426e5f0c985. 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/FR9W11911165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3678c57d1e303adf5a555a5cb08c3530a7c4d4b4c9a405a0f5a945243f5de6e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR9W12020201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ea275f9329c25fa5c6f5e7770f86849cf817ddb45edd704948d87f1b393b3. 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/FR9W12020202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0809d08239176409d081c5badb6fa62fc9f072637a078157f79a3da2690373c0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:39Z), 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/FR9W12020204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdaa07c156e5f2cef4cafedf42a846354fc64461f726e27437de30ea36049cf. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:01Z), 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/FR9W12020205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84830fdb6cddcf1d09a51fd0557d82a78c548e16d96c8db8e457f34d69ad5a5c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:24Z), 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/FR9W12020207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986673abdedfc22392f0d52b13f1e637ea033f038ff933c9e9563dcbd39a1675. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W12020209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e555a4e1f391210b0f90875f604460dde4372e74263ed510885ae32a14f9491. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W12427292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd77a478c1e5134ea7beeaa9898769a65fef2759d4edab382c798e890984949. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FR9W12427293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6961bd469f10e166ed38b039d57c92e873e95de7ef0945919bd69dda8579b474. 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/FR9W12427294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acea023c35618da68d7baa34f3ebe78c18635d165d8f0b7fb7563e744f5de49. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:55Z), 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/FR9W12427295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838105be9f38b6dc449fb23868665cd49a3994e712f2de82adcb54532c69db8b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W12427296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6bef7e71e2d673499ed2d07f32dbdf7fd71e871e4c095dcc425bc742d750fd. 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/FR9W12427297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5a864ab844fe8b3cbedcbbb9b9e91a35b072ada7caad7a3b9149baa97d13f. 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/FR9W12427298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e99721e0ddb5f51c2e54d0ae5f02225eefa394531ae6c480ba563f77f738b2f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:11:55Z), 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/FR9W12427300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ab9097813aff01154dbc119d4523238a9e5f4a671064321a7b35df3eef6b4. 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/FR9W12427301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ca86c7ae5e33fbe28a3fe15d858fc32bedb1f13619aba1cc6820c09fef7cb. 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/FR9W12427304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb473eadb852d56bd709e2647be8e6ac454924c3c305bab9467347ad18f7b9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR9W12427307.