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 0x126b7a85e454564a793a354858e6fcf1b81ff811be0e4c34e16d5b33163aef20. 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/8f0330b3-6399-4ab2-a3c9-ac5d16f16700.json and https://artists.proofprofile.net/proofs/artist/8f0330b3-6399-4ab2-a3c9-ac5d16f16700.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 0x4a2ac46e6155218a96cbe7339f0edf294220983b0dc2c294965128c36a22119f. 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/QM4DW1845657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e8a70994c8e7117e0bd3d8b5ec7e818243533f1d09be416e238ada2281624c. 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/TCAHA2353690.
Hold Yr Terror Close (The Orielles Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c0f009bdcf6b5757405b9358f123ec0bcfe5b947cdb39752077a31457ec102. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBCSG2400010.
Don't Touch My Ladder (feat. Louie Zong)
The Dancefloor At The End Of The Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e067a80fa1341cfe89bed58134f34c466dee8ff9a27a96810d938353805d6c. 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/AUGBT2451682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75ad34690f63826f92c41d0c80cdc59a5a25a2fa1ee5e700ea9319993d0474b. 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/QZDA51869411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858ad64c3d27681c229ef166ea644ce0b6452654e1bf139fcc7f89e518848031. 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/QZDA42226509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc54fabf0d2f16eb7397929d820bdd24151b49ff993e39dffcbaf8f5a12265de. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZDA42226510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7efbb91e03683cd1c5c93879f730b2910580f4c45dec954e080dee665266303. 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/QZHN42048882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0b2515507de70448f2b1e08e8f24b799192ac0b2036412698af8600acf7ac8. 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/QZHN42048883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c130c4e04907f6aa1e9bbb020626747c90fc9a458c436799885314e2a36881. 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/QZHN42048884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee00bd78b58e862714ad2acb77fb5dcb20d25bf67822cfd46623289cc2a08bd. 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/QZHN42048885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb519636e6c0598b661bbd3af6132affbe8234e73ca81a0acdd1ec69075dcfa1b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZHN42048886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4af6b7addd5e9bac42844d95265558ae48e83703c80ecbf06ce7bda59799bb. 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/QZHN42048887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef067ee84540ff2e521b8280fe00f5b0d6247b27f20046839aca9ed8b4b291a5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZHN42048888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fed67b52a6174a5c350814d096e14c1b7cd10e4c493be6c27d8804f8a7dfff. 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/QZHN42048889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bb57c1014de4734ce4a4b675860a6b99e51fd045cab79cb81b32f34df5f8d7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN42048890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25253c38e3c053b57af3796aae8be39a913cf5032dd268fdc352652215b4b15. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHN42048891.