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 0x0814fca10ea834c148e806e28a6e9ef2d16c0f37f4d8f928c5da207a8ffe7b9f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0492bea-4069-4d03-9615-6369df1e1e6d.json and https://artists.proofprofile.net/proofs/artist/f0492bea-4069-4d03-9615-6369df1e1e6d.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 0x580021b5a3d63b573ca51cd4b566fdcdb8f40e6701eb8f55e0fb0f3cffe55a4c. 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/GBPVV2204973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69813f540607ceec96d59cea64f8c9353e07368cb20771a21caefc25154a02b. 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/GBPVV2204976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ab0cbc070c78d5efbc657111ac3a14d04721cba259cf6c62be3fc25d31ba4. 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/QZHNB2220995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed225b89e06d1509931c4f71d8a14eb1da1414df7b0142fd6c8dd569b07313a9. 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/QZNWU2266514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bba53295caeb3023feb38b58d943bde83bd1f092c675419daf4f3853a19dec. 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/QZNWZ2335838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa3c192c69c4aa622f111328e10df05112aca004ef0e11d1496b640b9a1b86d. 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/QZNWZ2335839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0254bb9c3bdb07aaad4b9174f04e02e3bcacb9c5f5c3ff1fddf15184163bb. 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/QZTB82255152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ab34638b20c584f61c655e47a9536af3c02be7ee7dc681e4bc6c1a7d17177. 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/QZNWZ2335840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52a374983f9669745e2b21db5c25624635ad56708ca2bafc1dbd2ecb0b55a72. 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/QZNWX2059583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2be95d508bd5dc55e4c7d2a14a35ca1831d2ad94e794749744619a35fd5d702. 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/QZNWX2049365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d1a45c5a0e8e4f487c9f3fced8a9039ca4e756af25ad76fc3e80a19e87af7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWX2049363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5541554a7aeb01b7be5ccf7352ffeac936fbae7cd478b542e0519a291588146a. 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/QZNWX2049170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b44a4e22da14f03dfb4bbc11361789c1230978e91dfb308f1139d505847a6b8. 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/QZNWX2049362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7ba6a8d137cbfcbd954fc12d29ed1521ee8a7511183d8c4cbdce39cfca17bc. 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/QZNWX2049364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2229a6a38dc2472ae502aa48476207b727c2c6e7b8fe37334d873656b1772021. 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/QZNWX2059584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dfb38caf88cab64dac397852f069fa1a254350fb8140523e41fb9157a7a546. 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/QZNWX2059585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58c649e96fe9255607692e844edbf2e33b214727b944ea7d0beb8e978b70722. 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/FRIDO2310320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69813f540607ceec96d59cea64f8c9353e07368cb20771a21caefc25154a02b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBPVV2204976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0254bb9c3bdb07aaad4b9174f04e02e3bcacb9c5f5c3ff1fddf15184163bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTB82255152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed225b89e06d1509931c4f71d8a14eb1da1414df7b0142fd6c8dd569b07313a9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWU2266514.
Becoming Ocean Rework (Francesco Milloni Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7ba6a8d137cbfcbd954fc12d29ed1521ee8a7511183d8c4cbdce39cfca17bc. 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/QZNWX2049364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5541554a7aeb01b7be5ccf7352ffeac936fbae7cd478b542e0519a291588146a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWX2049170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aecefb74c2bca0793ad52e47a302d45ffbc2b41eebe730ac91c1a833ba9fb14. 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/QZHN92067212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c191121db130fdbe44181e567d128852bbc0a056a951239f882c31ca632b0e. 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/QZHNA2029698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce4a41fc5a0fc3200a5e12e68a7641b156e57e99258b718ac140e1cde141988. 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/QZHN92042690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f96afc54b62637b5fb78defd11be2dc67d57e47511fbef65cbb261f99f00cf3. 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/QZK6P1925221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3aa29c16e46c15bc911145ca5b5fda42c2700345fa9837d3ee42e35818f992. 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/QZFZ41903345.