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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6affb0ca21d4b8e772037d8ed743ca63feeb2f29b9df86a2c23f4857c233b374. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f10da654-e6ae-45d8-beb3-2c10243566b6.json and https://artists.proofprofile.net/proofs/artist/f10da654-e6ae-45d8-beb3-2c10243566b6.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987aa3b43c4924c259c95fa60cb83cf73c009057b3ecdea7bfc719897a224249. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBLNZ1200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e0eb68426ae25a997e2e2978927c1e177f5c8092f58176bf5f4f4c4fa50548. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLNZ1200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145c840ca4a2bda7725f576621603becbe9dcf6e2a3cc3781fb7b8506f4e7759. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLNZ1200232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39ae4d5b5255bd37ec4cae5bb45f6c64395566778e92dc01ff9a823de9d56fa. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBLNZ1200233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8ccab79351037dc0ef2226c10a126d79d07eab759db1e9938ecf11e32a00f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEHK91689552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf924272232cc15d5abb569b88bfc74dbd5295741b146c58b7ab0195a61b92834. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEHK91689553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd07633ce58368a8850d8a1fd6f848792c4766ad764fa13d95f52cc4379ec71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEHK91689556.
Jambo Jambo Jambo - Marc Korn Bigroom Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ac021a9c25839aaefa87c677992b56d2d0e3175b8befb991752d80f932a6c9. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEHK91689558.
Jambo Jambo Jambo - Jesse Steinberg Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e97124309d54cb8d7ac9773db42d0537f65762b0547f0224dcbbca945076c8. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEHK91689562.
Jambo Jambo Jambo - Jesse Steinberg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d5f65ceae19a9a2afdd9d67fb3c804226d3ed1382dec40e3266e4a37e2561e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEHK91689563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3106fa64f153371b00befe680837785dcabdfaf6cdb95b37faf0e7f23046c80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEBT91100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfc24e5046ba4b7ca2189a27c8d746d8632e89b14c42381b7acaf696368ddff. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBT91100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc82efab37a0e465fa322f0ca07b14bd86edf7dbab3eaab0459e8f31a8afe0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEBT91100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8436015d10e22026472fdfeebea27f514d54ae9b879dbcb37dd03e4932a5cdda. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA811400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e007caad15a58954fb9fb67273a8358b912f3a26a12276eeb77a7460eaa07c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA811400340.
Cold as Ice - Farenthide & Hubertuse Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bd5eb6097e0f9865c0f608d0d6125e9c4f374025f565716a50f04f5ac2fb41. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA811400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd39c8e8c1a0a9b4f5c4d8e6c65244c911ba520a286ebab39ac4c4be5e30bc0. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEY201300046.