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 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 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 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca91eda35d9461c7e62c8a5b13a6c8fdcac1936472cf4b655ed69e32cebc1619. 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/FR6F31460180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c88ac2c77011b43a261ee1d3763729dc073844e2b71775b6b18094e6bf5d17b. 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/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 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/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 953513 (2026-06-13T12:47:07Z), 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 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/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 0x5bdc210c3ce2852dfd9f115eb97b1a4f19c643ba590c9962bbfab79ec85297e2. 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/DKZK51400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b3a962a369f51812bedf54f82e2d3881acfe1aabfd23a7c34f6c6db8373f9. 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/DKZK51400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ac5ed4fc95f5d679454deee50839d3632732aa484eac12b05c283cae33b586. 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/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 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/DKUCA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f917b537b5746ed3cdcdb58bd8ac22e40d03b5c48a48870b55614950536b3c. 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/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 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/DKUCA2200007.
Lifted House Presents: Deep Sessions, Vol. 1