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 0x90f58c522a3fbe9f3dd7fa9d5b6c8e2f32b00859d27ed2835b8cc00b8734f8ff. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e8ce3a0-e657-4334-ada5-d5626eeee52d.json and https://artists.proofprofile.net/proofs/artist/8e8ce3a0-e657-4334-ada5-d5626eeee52d.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 0x6583991f971ddd652cef1ca38c40e67dc22d0f23cf3bffec24138eb7b2f9e09c. 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/DEL672300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5fcc093f5212692ee69a90f66645105ce1af633aa575384ba2ed9926bc2221. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEL672300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1718b5ac159621ef0c76e4f101b521c82b34d1c5e11401af0987e2d79b4b2. 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/DEL672400045.
Open Spaces - Máximo Lasso Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc336e5580ccbf54d70ff74195bd1d8beba14b26f46eb5d0bcefc2be7ae637309. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEL672400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9306c450100d4c5c111a93c0fbd8c9a6d0676c08d069ebbcb02485171e2df5f3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEL672500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd4deff2a7f99f2bf0ed727482db3034d6ef29d7442cef66c98b0eba22ed873. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/DEL672500072.
Open Spaces (ABGT580) - Máximo Lasso Remix (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a3374d14e83f93841304be19df2ff5b9bf59db7eaa4af4d0abbd81226b6f51. 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/GBEWA2402767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472f42cb5a0c99959962f1f0323f210c810f8761cc83f0c91673ea39fe7688ad. 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/DEL672300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d0a46fb9bf535b20cec12d3175ef2c27e69a1e26c3b91f54c357d354eea20a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEL672300069.
ASOT 1138 - A State of Trance Episode 1138
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb23ea786d474766bd847ce0c289b2d8b97314d1ba6176697ecd49caa455fd7. 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/NLF712307104.
ASOT 1191 - A State of Trance Episode 1191 [Including Live at ASOT 950 (Utrecht, The Netherlands) [Mainstage] (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6c85bc0438c4d25277249325351d8b9a7833b124e041f668d659ab76ded77f. 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/NLF712408033.
Finding Faith (ASOT 1199) - nümind Remix
ASOT 1199 - A State of Trance Episode 1199 [Including Armin Anthems (Incl. Bonus Commentary) [Ultimate Singles Collected]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a44bff1271c13353bad29465cc3349f7cb599ae4971660c78a0325997d7b1b0. 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/NLF712409286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c10240d943753dfa9884c9586ff8b988fdc4495037090de1f43acb31c811851. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEL672500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310386473661026120b70ab29758ad26ff1d247f41edd3c1f3df9208cd66041. 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/DEL672500020.