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 0x297e8f71855525f91e1ee13ec371f3947a112bd48cda81e7e86c98f705937d91. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b3fc739-d4fc-4511-a993-1b4a4d0ec97e.json and https://artists.proofprofile.net/proofs/artist/2b3fc739-d4fc-4511-a993-1b4a4d0ec97e.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 0xf8951fb2130cf7b91c5cb0b80e167b549a236b8b4f279aa616b13e3a9a32b1af. 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/DEBZ71100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dafe8d39ad6331cb5d5e989f384b2ecba8a8afd5b15af89fc132bd8c9a0efec. 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/DEBZ71100697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364da2d4c10628c670b3f5e8bde5b4a2ee831ac7a145181da5f7541a821f732d. 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/DEBZ71100698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee9b50b8649d95683662622cac4158c073cace72142fedeacb51d942a3b3170. 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/DEBZ71100699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ccec0f12f046935f5ba34eeba1e0133fd29ba2e4bee2ed1198b04c25496e08. 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/DEBZ71100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c38f022d47ccca13d831a9276271043cfa391a763c06448118f057f009761. 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/DEBZ71100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadeb29dd41e8bbf2d33e0f890d8d7494a80c8cffb4cf424bc6a14c921f444c23. 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/DEBZ71100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2ed2778577414caf4b480863d977a8f9c0a3b93e4d4e97b383580c9cdb1f4a. 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/DEBZ71100710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6db5188afbd0865aa8f17521236c7426c77164562e8cbced08c1cbb26ee832. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEBZ71100711.
Shout It Out - Take Your Ass on the Floor Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e502dbc003a75056e794982d9e82658d55bed13971ed5a4907f8ba52cd9beb. 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/DEBZ71100714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4583813f26129945f5c9f5be533db5ef86b9e48d4ab5e6e2c1ae55fc75bfbf. 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/DEBZ71100719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d9202360d33daa79ed397f232ca190fd1f434ece741cf3817cb6008294051. 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/DEBZ71100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc68524fa51d094992f7bad629c3ecbaca6e2e9dd573344dda42d0bec70dd0a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEBZ71100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4edf5a8d3287b30c919c5315ec605941123c17deb3c07788e83972fa448237. 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/DEBZ71100740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98ee3879ffdfad8dfcebb387f354f640498b9b7d042fbe2c0fc8dd73eca184c. 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/DEBZ71100741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d953a49fbebd1b90c9a4241aab0ac8704069e47d014898df7c398e1996b685a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEBZ71100737.
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 0xc9360380df4498091c77281fc4a56f2250140b3c8140d98f988c733bb986e47d. 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/DEBZ71000092.
Back To What You Are (Imposition Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cab6f2bd00fdc02fb7228df594d82f7e99e0a4c7e0be13b63fde0a31d3a5a4. 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/DEBZ71000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d8a9489bcdececdba6dac094103dafdc0386aaefccfc4db72ee715088611e4. 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/DEBZ71000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f30d45126f1652bfa7b8c2e5d6488a21c7eceac404364d0e4f38d91013905. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEBZ71000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf0b9f97d701bea10bec9aad700df6b7337bddeda2b3c3f1e17fd83c343b86d. 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/ITA890200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca1519991b02e0866a5ec50c04f1da8ea1997c62402f998ecdc3ca647951e57. 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/ITA890500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37405f584eb6de8bff0919781963033b030f0b842fd9a30368893e6c82648b0. 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/DEBZ70900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f9cc24ea4b34d5c105b27de06a8afd37d563ea315e32b2d148d61b9b34e28. 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/DEBZ71000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd175bfb1c2c9c73386ee32e6a1145291e131b5f0ddf68e22995b556da887cba8. 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/DEBZ70900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3cd479e930ea70d11e2c57a813789806e4e85a27abb13819b1c81431b2613f. 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/DEBZ71000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc942022f3660d7a09294fd99174f6d93bd1a3978a384899ad7eb5d0959d200ee. 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/DEBZ70800332.