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 0x1ecfbeb6e4d0c0ea40e2c5dffa827c9fcdf2d183ebbfb53555f794719d246db7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/645aaf0e-50dc-415d-8eb8-a69fc55bf47e.json and https://artists.proofprofile.net/proofs/artist/645aaf0e-50dc-415d-8eb8-a69fc55bf47e.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 0x86d48d3a1af872f1c1a1842fa1af1e21649149fd82460b9ef579053a6a41ab85. 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/NL1AP2059950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317143be6cb195fc70d38196a59fe6ca94607cbc33caa6b424c22170c5a9a1ec. 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/QM4TX2415201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554bd3fd5bb7d200a4ea045ab662ff1d6c687d0df786398817ed88eb403b0058. 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/AUGBT2324035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf290e872bcd6de7b68899d66e3d4b670c772829c73570c6810433f6dd220166a. 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/AUGBT2302186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86295f50a447d9d0c457f2063b7b3702e4358346f865133144563e8554345ad8. 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/QZSYP2308863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831faf54de576f0b54ade361b9bfe6e018439a02cf6cce033cdd16870b8f960f. 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/QZDA52258896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844abb07c4c9b8cdf3abf11e6fa80d08b245ec41b8cfb96e16650e410d3ee9dd. 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/QZNWW2166886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6380aa9f1ed7017e984513269ef19af58d29fd78f07fb36fe481c74e90623f. 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/QZNWW2166881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d2d9a41bba3fdbdd74c7513ed4dd752b294a7478fc8f26dcb83ae339186dd0. 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/QZNWW2161696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5e690a33128ee7cf728d5447adc4dc6f0caa14dc4b993fa296727b4f275d1e. 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/NL4NL2135609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5230d479c02c589467dadd0c74d4ee50b4ea45cfd0f8d855fc656e82841fd1. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NL2VN2100012.
Fight for Me (feat. Chris Linton & Veronica Bravo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c654242f82e448d8b8f69b0b12cc849c69bf836771eb8cf81de652ed5fef2b1. 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/QZES82102681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b60dfdf32fc4f567c0fdcc3fbc179185667894623dfe4e31c5cd71a6c1ebfc. 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/GB2LD2010224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d63a625342f3fdfcdc1f2e65e6484f5156f8368dc5d85324b0fbfba721a621. 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/QZK6G2092727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72203f755b415f4829af9468c282f1b33a13a4449fe4e7f33813d39c31d7c884. 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/QZHNC2056561.
Power of Music (Nightcore) [feat. Jamaal Marvel]