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 0xe2588e94e272273dda66ff8001431976fbac793645fa16199d29f5da294b9be7. 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/f0ab3584-70ae-42e9-9daf-4417fe41bead.json and https://artists.proofprofile.net/proofs/artist/f0ab3584-70ae-42e9-9daf-4417fe41bead.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 0xd619f878deb8e2c41e74c2294f7fde682263c08c9529e1ee505bf6a8e4e52184. 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/PLC062424297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccbb93c0b0ce0d9db24034d5ec89d56130b2a34dd28bf8a474bbcee2fec4ef3. 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/PLC062424298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad21cedc32611e775ce4012d6b8702ac898d9680c94e5f0e468fee2f552fb5d. 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/PLC062424300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f42e6be316b1baf569597adea599f5df908c5b6ff35f137301553f0a0070a96. 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/PLC062424299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ea6e4d1a7800893c3aa52525aca45a8fa14658bbcf71ebd04231b9712d53e5. 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/PLC062424301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb636d14bbf65e28f9b28162c8432e329e5755894d93f6dd4cef60dd975f9a93. 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/PLC062424302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41c91a0b3d1e4881ce122326094ac917221e15c5a5838dfc5b16b1d4a2914f. 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/PLC062424303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b03138c5471fb176c87fb193262ac53afacf55fd6ef3fed34ff8fccada8ece8. 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/PLC062421963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91afa19e7b33cf804005e6b78b4b2b7ee35257554af32853d8dee2342e7c3100. 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/PLC062424304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33adc46f8bbe53e2e3c230fcf2029c3d67d075f4e9e87ff7600e9a767e72a01e. 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/PLC062424305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dea814b578b00a2b4bd8553bf2b68ad0b3cc41acc28a39e04e4aa03f24ee9ae. 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/PLC062424306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912b8862383ffefa7e22da1eb28aff7ae8c7f0c04098e23cbf7a6c21bbbff0b1. 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/PLC062424307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf15ff018345e1f12ca9a53f505dbe5ed78f0a405122bd2a490423a3ebce6562. 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/PLC062424308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0df3f75e613a95851067691c28dea67fc635688d67cd0f38e53b67b272c9a33. 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/PLC062420937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e83a8041be4afe4e7144ad6ae233084a8ac147f9b18a9c2a8dd8bc2879dbd20. 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/PLC062424309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4907c831baea2335f6fd87ccb26862306f2dc3986eacd9871140f97aa3c3a6. 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/PLC062424310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646325714b8c51c9c0c5fe28c0e30e5e4a64fc494c5531f54aef560ef5c387f6. 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/PLC062424311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7c1237271ea2e61d57457cfc084859bbc8472a1213262491c64226df5248b. 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/PLC062424312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b3d54c8e1eef1dd8858ebf5443fbe12fc95efc62b7c0b6f54a2e1da4f3ede. 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/PLC062370615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6340fa3f6bdeeb1ec69c79fb82599e30ce7c9b962653e0362da31d9fdfb4fe. 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/PLA552300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052f21548d0c36bee7ffc5d573272dde0f7bb8309739218cdb99472b5aced4f6. 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/PLA552300925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4324ac5136d9693d5c4a15720e4380526ec05da64ef17d8166358de385e83dc8. 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/PLA552400954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc5f55d0c25a18ed66e0cacab64f819e6b018acf47a50c6dbb44b9abc234613. 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/PLA552500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29894d5933655e2f71e1100edf00191c371bdfc4e8dcccf49cfe73b10785b26b. 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/PLC062511474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b29e9ec18ff71e4c01fbe2298a9d7e69439c56cb7d6fae4486a482d849b04. 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/PLC062509439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc5f55d0c25a18ed66e0cacab64f819e6b018acf47a50c6dbb44b9abc234613. 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/PLA552500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc5f55d0c25a18ed66e0cacab64f819e6b018acf47a50c6dbb44b9abc234613. 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/PLA552500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e046be6ad4ab9b465c896a6e8dda3648b37bd12e2d2ddacbd6851fcf026ba82. 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/PLC062524646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571912e4d11c157dfc1d9bc0902065dbe8f5044406b2d5557f8cb88bb0d132f9. 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/PLC062523378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45d09619db5e25d4cbbc57dd611785204af6b6289e26fbd10dfa3dc7789e6df. 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/PLA552500135.