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 0x7320b3572a3effde5675d4c1a67826562519af9447f0d8398e1c09a273048c8b. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd987f22-6c00-404c-b217-cb016f56c9f5.json and https://artists.proofprofile.net/proofs/artist/cd987f22-6c00-404c-b217-cb016f56c9f5.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 0x8534eb70d8e4948b7d3335452a5dc38b78642e4383c934f9983d4845fe30bcfc. 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/USCGJ1495465.
Hold You Back (feat. Maria & Fuat Talay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9369199aea66db869686c7734a926edc50bf53649759c3607c91a0588a6e1f. 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/DKZK51400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca91eda35d9461c7e62c8a5b13a6c8fdcac1936472cf4b655ed69e32cebc1619. 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/FR6F31460180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c88ac2c77011b43a261ee1d3763729dc073844e2b71775b6b18094e6bf5d17b. 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/AULI01393010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdead89826cc47d0a93739b0428b8f100efb8027234fe5ca58ca19e0620f015d. 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/FR6F31460190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bfe58297adc1e5a3a482329191ac362d6e408a96b9be6099b5f19c662b7f49. 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/USQY51419655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7dc2afbc1c902c762ff50904df0e955ab170cd6ac7b35d70e1c12e005d4bf6. 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/DEQF61200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bdda151550793809206c3e7d720518e8da13d64693f4ab16cd88f8c711df99. 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/GB7NR1412501.
Sunshine (Thomas Atzmann Remix) [feat. Matthias Wittmann]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4087bc086de8970ecdd2a2cd72ee266137914e605ca2116941ba71a3c8742e. 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/FR6F31460200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec390f5a4408d167e0ddd19dd96820476272f4e470299d6275f734b821ab6078. 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/FR6F31460210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546c3dfd57a021a3835bbad5ecf745da8669d4926c6f2963ef5aecef073c4310. 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/DECL81400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244c3f01b11e854e7b11d41e4ea3ad4fa49679491ac66cd75a7f8f545b11af35. 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/GBPQS1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff21eb0dc1e3fd5e1e1b63df9a99bc28b85141e05d43c46fa24da3492ee83db. 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/DKZK51400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56679ade26f698cc21240dfe458d56a71e6f7db0122794a7cf7ff39b6db0759. 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/DKZK51400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc210c3ce2852dfd9f115eb97b1a4f19c643ba590c9962bbfab79ec85297e2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKZK51400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751e480bd18c77a5f5ff19db5919672370cbd50d04a2e90a949ee05453e8fb0. 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/DKZK51400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b3a962a369f51812bedf54f82e2d3881acfe1aabfd23a7c34f6c6db8373f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKZK51400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c658c36bfececc03b2a53065d5939a787e718440bf6d4b1fd9af4d3ae29ca. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DKZK51400501.
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 0x5f072807e9ba8a3b6d5fd1f09242207ac82b96f1ab5b9d9ccc0de6ae13f1574a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DKZK51400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba44998fa69e36d2bb7c9f088145c2df9d3aa04d87ae8ba609524936edb0df3. 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/DKZK51400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ae98204f5c49f7ad4f5a00e50468eb68a3be21df713253afc78010bf7614db. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DKZK51400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ac5ed4fc95f5d679454deee50839d3632732aa484eac12b05c283cae33b586. 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/DKUCA2200008.
Jodaie - Separation (feat. Zhubin Kalhor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79fc5667857af25441a4261cb7e0a5904f528b098bc7b7543de8d3667c3f8a. 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/DKUCA2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0175c96157b9cc25ad42e36d358642c0e56a54859ba5b82719ab1f5bfba66f21. 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/DKUCA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f917b537b5746ed3cdcdb58bd8ac22e40d03b5c48a48870b55614950536b3c. 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/DKUCA2200005.
Ghoded Bash – Be Yourself (feat. Fuat Talay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2077ed3fda80d25e82018c05473993384ed16dab70e7a992d05b43f9ebb881bf. 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/DKUCA2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17525deb552bd32ded6cf827ab8fbc6fe5afb3847e8f85fbbfca4b5abfe4cc0c. 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/DKUCA2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9369199aea66db869686c7734a926edc50bf53649759c3607c91a0588a6e1f. 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/DKZK51400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b40d475b1c140effa62a3d4fc5fe4704f7b74874d38936e0a432abc43f7bfc. 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/DKZK51400106.
Lifted House Presents: Deep Sessions, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c46b0b0da140ef68d67cf6cc4b085c29405a6a66379c4cf215804dfe9f00c0c. 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/DKJJ62200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb9f8dbb50d4c7ad1818402c123617b6a58abbadb9585c7de4c80b73faecbf9. 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/DKUCA1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa81a28c3b42e7a90cd3673def500a57015bb8dc4ac9d724107762c1860f65e. 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/DKUCA1800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7effabc1ed6d7cbfce9a30f4a6c854a3c8fa5246afae3bbde4530b7833842deb. 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/DKUCA1800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb181c40f217cda70bc8a5c39a2a16f8e9438eb94595c644fc05136b60babeee. 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/DKUCA1800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c892431750040a3cce872fe816dbe20eda1e2b0a63726071a5d29eaa9466bae. 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/DKUCA1800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab8417f75bed34fbedfbf5d72bdee798b9692b4496b2ebb7924154ae4f11576. 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/DKUCA1800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbc9975a06fa509dfe1183d2921bbe19bc0769376924176f23ba8b5438973f8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DKUCA1800106.