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 0xd6a461d283268edc96bc8c4130554945a7044caf2b82bcdb803aa7ac31492ba2. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33d6285e-8995-4c3d-9731-229aafdef7eb.json and https://artists.proofprofile.net/proofs/artist/33d6285e-8995-4c3d-9731-229aafdef7eb.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 0x4e9f2341cbaea167801f23c01c288dd10423e452580616713fd554b472bb6de3. 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/GX6J62400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3ffbc3149b4e36e871c8d7141f2294b3125678a58a61c18103fb1540a59f0a. 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/JPS802351923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66925f967172a3dfb0c24b87dd3d47632e10144308dfda96356162de7107b030. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPS801962687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3eb3c38b8db374409b521f7847a3dc96bcd18144e17fb7047865dd7b177aca. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS801962079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a54a42beab77f02b6c4282df66fbaff5633973c1ce852a438248ebd55e6e7. 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/JPS801951844.
Like a Swimming Pool (TREKKIE TRAX CREW Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ba14872041c6ff27908fadea7b3168dda333b91905501d95e2e2907b7f221. 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/JPS801839890.
Everyday in the Club / Bounce on the Water Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fac36e39b43b1b3d5ceaf2a41f2889653128c41ac0be1b9f9a83722e7c6f5ac. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPS802356208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8b39b420ae03bb13faa0d15e7ae93f4b44a872df7e01eaa3e6430cbe6fe3fd. 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/JPS802356209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7839a43766b1b97d7b04aade0585196cabedeaf8b98de8a9b4e1c871345c91a8. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/JPS802356210.
Everyday in the Club (Martyn Bootyspoon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff349bd5852379bcd57af7bf0335bff4e11c39e9b4406dde6d73625e382566. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPS802356211.
Everyday in the Club (TREKKIE TRAX CREW Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280c88722c40a0992b9588e752a1dd9f5e380d9689f1ec6c9a6e14fecef5c812. 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/JPS802356212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035e3354f48d8725926d00fa2ed2c39893e5e9ee75aff14b47552da4fb6b1ab2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USZ4V1700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a0475d54313ad91fe029f0a890c52682c0a0f69005cc8b89db1c5bcd73e3f4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USZ4V1700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4900dfa6151880c1ffe8121654b3bbafdaff9c8fd96df81c3abee5ac0d23a033. 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/USZ4V1700216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f3cee9887613d3be63741255e9c095f5688ecf4998aa254440de9a84bb4e62. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/JPZ921612204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df00f386a94ab10077aac5caab552e46fe4b6a4ebff2219ffe65bba84c35fa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPS801731226.
Cho-chocolate drip - TREKKIE TRAX CREW Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4812fb2b8bea44f73530e5b188524e7b326fc4107df8315a48bec6d588f019b. 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/JPWP02300820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c888e8b95a75018fbe293d3605cf01d7b51441f14c99567740ee781b98ca28. 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/JPS801853748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc825552e08597ef821e26fd9bdd34bedb64006c3b985d423a4199afdbd70b8c3. 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/JPS801850502.
TREKKIE TRAX ALL TIME REMIXES Vol.2 - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ba794b4ad029ed8c9b2bfda3d68c23eceb7b9622f1f5ad1d3099001f0991d5. 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/JPS802356450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a42348032403ff9b3d7f38d96e3d4ffe4d6fe0baf1217c35b6c0b99978f89c. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPR842400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a05d2a8d3b9b6c3094ed564783109ad275315f23c9fb2f345f3611b50daecb4. 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/JPR842400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1b3e5119fe80f25ac9ef2977aae8e5bf7276db0af52569848aff8a614df6eb. 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/JPR842400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425410d1b7c9186ec29a1d098edf1d0609cf09b94f2049d20490872e3932bb55. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPR842400219.