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 0xb102229a03eefbb2460d35ca51e93a3453b338c200489f6e16b64a022d26851d. 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/0326ab65-439d-401f-bcfc-7982793afb31.json and https://artists.proofprofile.net/proofs/artist/0326ab65-439d-401f-bcfc-7982793afb31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Come, Gentle Night: Music of Shakespeare's World
Mister Issac's Maggot - Chestnut (Dove's Vagary)
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 0x181851919cba8ac2f3f97f6966110e4ac58ff0b874d47059fdbd247055d551db. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USTE10401556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d07969882f5a6c8674d51d007184c42d286fe41a646c0a36263cdc5e3e9cff8. 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/USTE10402556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf13101eac5a4922d584669496e2a0957626c72009f46f1da2225086c9466ce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USTE10403556.
Jack's Health - Vale of Years - Jack's Health Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f93adc774d5fd9e45b1717b1e076fb76d7e47dda26495bfc988f5b627d89ac6. 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/USTE10404556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeb44a33a63910468b58040c82a8004f62f1a9afdeaf1a47d7fb354f57580c7. 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/USTE10405556.
Departe, Departe - The Cobbler's Hornpipe - The Fairy Queen, Z. 629: Third Act Tune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d11228b2db1fda8a06c051a2f40440d27c45aa9d38fe9475db898e2c7ff3b70. 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/USTE10406556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698b5b68932d069fecb66392d2af22e6b9f35780fdc982766cb714d8ecc0b07. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USTE10407556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc63454ed931d0cd84f59f488cff3c76c714d146a0e41791fcf9b088a3bbd35. 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/USTE10408556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eeb78b71b39b94986e1a9e83720ff119082333b6206ba3f6ecad25a360189f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USTE10409556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f551bc37ed00dc94fa3b66ff69030d3b4fb746e0f571f4df05c2c2aefba7a35. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USTE10411556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21ee7130b0271d76c7055dc6f3f04b9c0e75a7410cec1d2423426d015be856e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USTE10412556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515b8bb5fc6008c80a05f4eda6dd08447f0d73e66b6f66a491cc93e5540ce522. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USTE10414556.
The Winter's Tale Set: Love's Winter Light - Apples in Winter - Drive the Cold Winter Away - Jenny Pluck Pears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6594e7ab79ead33b5d80b39c076c8947992338977c362adc88257ea83ee45. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USTE10415556.
Lilli Burlero - Cold and Raw (The Juice of Barley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ed9beadf71686b704d1d1c297fc84acdc6e242f893a6c24f99a784340fceb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USTE10416556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7070c2931a45d52401895d5466871114377bfa567386720565131c85c32b060. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USTE10419556.
Scollay's Reel - King of the Fairies - Old Grey Cat - The Dance Goes On
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9107a5c8519ef4591f369920c3e790f7254f42337d8e87bced7b500c1f3a1e. 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/USTE10402536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeb44a33a63910468b58040c82a8004f62f1a9afdeaf1a47d7fb354f57580c7. 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/USTE10405556.