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 0xd376337d68a310834421079a1c0e4f9f881796d3705531f01762ac5bb438c4dc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05414d74-88cd-431a-b4ac-e0f3014cf041.json and https://artists.proofprofile.net/proofs/artist/05414d74-88cd-431a-b4ac-e0f3014cf041.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 0x111e6abad8e52c7d62c333c12f9967c5c7a1640335a0c684da66e300a1fb3e63. 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/NLM792000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242255b227d604dcada327a48352255f712f490c51a3a5b97f083e8b361742b2. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/DECY52100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46a46b283e082bae0a6a8d125841c509a65f5e69343476d1a573bebf7eff83. 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/DEU672300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3519bd22f450c89c9f4cdc7c0de40686e3388ae2c0954404623b549923fe80a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEU672300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d49a4d16ceb92f82e24f0877f50f9d5c32534bbb949bf89bfc7939968edb944. 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/DEU672300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47194eac89652f896ccea1f02817bcea82c401ccc3679c9fa170187e8db64a51. 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/DEU672300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804715f956a2ce90ea9057bf6ca365b2874c86231479dfdb3df7378592e98eb8. 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/DEU672300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d6ee0152e667b715080d8684606ef2d13077f55729a79892f98a991b07bba3. 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/NLTH62400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d6ee0152e667b715080d8684606ef2d13077f55729a79892f98a991b07bba3. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:16:03Z), 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/NLTH62400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cdbd2fa641ff42911e75bd16ab26621bf8eda8a424b8d1658e808b1d8394ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLTH62400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1603a3a5704241ada095ae6f5352b447765cc6f7d3e13850ea6dac081ed5bffd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:09:23Z), 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/NLTH62400033.
Abyss II x Darkness (Philipp Stoffel Fusion Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae74fe1f2aabbd0b60e42f152cc867d47a22119d048c6b0f45c565c7a4a127. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU672500068.
Ceremony Of The Dead (Michael Mayer Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5adde2f6f2fed7b0f88b7d4c49c69dd1c53f51efa2e3b78eb049fb23862188. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:39Z), 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/DEU672500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae74fe1f2aabbd0b60e42f152cc867d47a22119d048c6b0f45c565c7a4a127. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:03:34Z), 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/DEU672500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f2a5c4f96ddb6697bea3157efdff84c185f3d76a53754613fb3770ee654ae4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/NLTH62500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e538b482013df588992fd85ab3f356730b7216287357d7b089bbca6c0c269bd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLTH62500084.
Wandering Mountain - Wata Igarashi Ascension Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615471697034fdea504d663b3baeb3d79488a99b0c8003ca826769bb69d01a54. 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/US3282305202.
Expander Six / Carex Vesicaria / Lucifero - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2013ded14875ffeec2e559afb57765741733c82f3a015b5c879049665270ec43. 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/AUXN21800171.
Eternal Blue (Wata Igarashi Crossing Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30afb1945dc56d333a17c3f7e44eded72495ff4114f81e68c16805c87ffe2ed7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/AUXN22389974.
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
Dekmantel Ten: A Decade of Dekmantel Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405583fd7352366a3a21d117f276fa467fe26cb98be25c932eb4dd81f81b43b7. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/NLTH62400140.