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 0x72eaf26c0cb34e990da0e1c2626813c80b6aa8aaec0d07b9e6153453b5bbf56d. 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/148286ef-c8b5-4ed5-8bf9-8995adf0b16a.json and https://artists.proofprofile.net/proofs/artist/148286ef-c8b5-4ed5-8bf9-8995adf0b16a.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 0x47e9b5ff851a00bf1b25d6c3c43002e9640e09a4a50ec21d1870d46330e9ca36. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMPVS1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde73a548d1ed49c2f6f6fb6fda53beae979f8786887e8a00baa70faec67efb2a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU1586187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcbdeedae23836593d057c3a3e5293d34daee8556a1e37e7bbfdd197783b1b0. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBKQU1586188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daa91748d8067663e1de9d96a22091e07a39cead1981f3f23cf3a1c35ffbc98. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DECH61500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba44cbab5c12405ae6ad8e97644c662452912dffec9661bca77cdb3f2eb5e9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DECH61500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45302f1492f2b953cfff8287d00dff7bc10a955739de9350a601d08c42b19ecd. 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/DECH61700130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96dce74020d58d57ebd1155a6bd3271353ffd1d35da1e168b75a20c457e6875. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEAE61800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c87d7875ca74fcef5f7ea1cb3efcff43bc82f8dd757c1342525eed0013cec3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBKQU1951841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705c01990eacd4373b174aea1c25d7bb2c669f748271676e764ccaad236c6172. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEAE62300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf54196daf63b0d9d80c8bf0566836374f35d5ef164e1f603448f7a62dd001c1. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/DEAE62300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dc87508622d551f4a16831c4cd4ffc1419069af1b62979883d91327b6758ef. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/NLCK42406269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7ce15eafc3c7423ac335fc760f8448dd2a3a792dddfe9928390b61fa416ed6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLCK42406270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a0b3ea35266f23ac3886d6cb128c0130fa52a75d710a06ba9e5a6fc906f7ea. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/BEN582400509.
Global Underground #44: Amelie Lens - Antwerp (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9b7be6743e08788b0a83424383d7426777cb20a2e5e1b80bff7fc818fc6629. 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/GBHFW2200070.
Global Underground #44: Amelie Lens - Antwerp (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ed1e21e8d0ac624655210b8d9650ec57db672a512aeb322ebca6d011dc19ee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHFW2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398cd6dab38d91d18f4bc88d720c7054ab3760cb2b23954bc1e6b72b311d2e36. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITN3C2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef29e565e32232122dc209a24aebfc39569e7bd5e1201b8e6a9ec757fd77bd5. 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/BEN582100911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39904dbfc384d4b4fba610e64d24a13112220d70d1b80c4d89606ecabe7226a6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLCK41051020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccef3500e8f31c7ea7802133e486150843a1a40ec3665a8360dd479d62d5ba6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BEN582100756.
Ellen Allien pres. We Are Not Alone, Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793413bb302c249c9a6379545c1dceed02341868401d04a24ba10cfc6086ae35. 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/DEAE62400051.
Odd Even, Vol. One (Selected by Andre Kronert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3eda989f94838af643b5c3824f4351928ea8d1303566ec61b2fff890b5d6bc. 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/DECH61500309.