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 0x697a29c80a33c989739c366877e455f2c135162240a4b49b993505b7156c2d51. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bdd16a5-787f-4e7e-a3e3-6dd1ee826de8.json and https://artists.proofprofile.net/proofs/artist/3bdd16a5-787f-4e7e-a3e3-6dd1ee826de8.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 0x05ee73de4a875ad2b9fe4f22cbb763705bd29e17154cd0e9f4d0b8c2efed8409. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DET751300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b05aa900bc9158badc28c80ce99eeee3ee71328d3c14b76610789ace582e6d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DET751300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf282c5d97ef63d8bfa57584371ec6a7ffb1fe034407546181e362e9e64c9cebd. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DET751300053.
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 0x2623e0e05d5ab29155b0602f9b9926feb113bf973a74e5e82c01092829f947a6. 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/DEBE71900116.
2 Andhim's Hands On Cascandy Six - Andhim Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd79f1f0b184b3da7a5984070394f612877533ab8e53ef237fffa906b950327. 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/DENM91000060.
1 Super Flu's Hands On Cascandy Five & Six - Super Flu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642482d553f37cda836faf92126a6721bd87573d52f5aadbf8f46de0237393ca. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DENM91000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45eedeb17c7241067013a746b4ba47d5ec0bb4b91f7061abf746d5a976c8eba. 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/DENM92100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0303d8285738bb7761c26538671cb30f2a755becc04f03c01304170ebb1da8ca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DENM92100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80e8ed981b0eae239b04155a43d0e706f7abd0c6464fe5c0f74ce3ea439f5f8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DENM92100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecf684ebcc85d9e41c6d716cde82691c8f7598e5e3b69281e141b48f4c1933d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DENM91800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a74eb96262f706573998dc333299272e665de71116e6b6f0dae34a90305be4. 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/DET751300025.
Goodbye Darling - Super Flu's Hellow Darling Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6151d9868755d9883d6587628dca05274cfb6b01d5d8fdd0680e6f9eef6062aa. 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/DET751300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c67812a9260e98a4bb4ee730e13c39c5edffefb7322704e47815912fbc3748. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DET751300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289cd4aef128879fb775f7795e3f8c7f92f58d2d81d74002e62c5901a0a7f959. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DET751100052.
Escapade Escapade - Super Flu's Speck Takel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9b8792f1cf8c7de2c9b4fa78eba569a1cfd71da062cd306e6297f49db36cd6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DET751100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b076a248cd5760daf64e1206264b24a40be34806c6a270c595ef489615036d. 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/DET751100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8b7c16b617070a641000a652465a468af0c6840c2a5b63126855505ecc4580. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DET751200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405dc101dd4e35ac4943aaa9de780bd1ea8213e6037395cf5843f3aa46554145. 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/DET751200014.
Zirkus Zirkus, Vol. 19 - Elektronische Tanzmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e6d1e7642f72d20c4a26a24b96b69d2d984664710d7960d9ceebc4e2d189c. 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/DET751400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa6c6839dbbd0152c98c73479b9f7e6121cc651416d9fbb11d8a9f79b3608ce. 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/DET751400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abde75bc1e9dc740c7749ce509a94064e4c040cb71cbc24d1c35d9ce2b204de. 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/DET751400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6eb9ce4ba53a3209c82ccc0d3260690aafc4d7eb32d869017b084d48a75e9a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DET751400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533c5dbef717e52fc5293dfe484aa9b757ddae3fbd60ad6807e2bbb01e1c48c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEDU61100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058490441a23bff8c1ecb8e87dada45cd81fab7867da0e2fa52ed745cd15f7c. 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/DEGD51206236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f214e67c8c0fc53a514fd1e090a96c25abad2eaa950edddde9db8813e5109. 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/DEH741206777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb283f9f1e3efe5472e864dbb694bddc6dc288a19d20f1abefc741d6846e7005f. 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/DEPS81200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49af86e42998b65766a903c615aaeae37aa42170caa26255df17a9f21cadc74c. 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/DEH741206779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc82d3f843bb1ad2a9a136d5b6fed0d4cfe9e8fd661053efdad786ae9c83d17. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH741113562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b117a226db13d0effc33419f9c86b2e8fba57368a1ec5e2dccf477b828da55e. 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/DEHB41500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4abbac3cac3a5e893be1a94e4407561293b9320cf4bf15a813d9760ba8534bc. 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/DEHB41500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100524aae8e0c58506006453161435f07ef4826684d22e767ca76112b0daa0c. 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/GBQ5W1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a61fa016b896e33c53cbaf2d24ab036eded856da6f395f6cc22682ebb78dec7. 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/DEH741800021.
Exotic Series 3.0 (Mixed By Kuba Kraczewski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e1490e7c5ab9abdf983183923b8317f500cdd660ea6d5c545403d139cb7226. 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/DET751100033.
Poesie Musik Showcase, Vol. 2 - Mixed by Israel Vich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a7cb7fd92d627e7144615883b1d28777b388122b71fe20ede3576b6a6b44fc. 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/DKFN71000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de59e676919ecb1581d213e03cc8f6d5c9128991934a0d581893f0896289110. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEU671401327.