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 0x6e4c53a86702380cad574fb82d25b7e3ebbd0513dd0fef57e89d76c114aa76de. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90baac50-4b94-4f29-a7ae-4ad9229f7f50.json and https://artists.proofprofile.net/proofs/artist/90baac50-4b94-4f29-a7ae-4ad9229f7f50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quarto scherzo delle ariose vaghezze, 1624: Si dolce è ‘l tormento
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 0x854833e316700ae606046aab3dfcbfaf78710fb9ba948bf596589eb80484d015. 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/GBELX1806619.
L’Orfeo, SV 318: Vi ricorda o bosch’ ombrosi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03bdab652a0d649da6c9a157ba01bf3ea8b75a75a5c079133b5fb2b24e95c9d. 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/GBELX1806620.
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 0x086c060bd029634f6b27fcbf1fb6cc5e49fc4ffa6a54d6d7870a2148c69de234. 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/NLE422303101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5978edf7c5eccc27ab11b77113b22bf7f85251fbf2c4ae394b4b6248c956ea2. 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/NLE422303103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca421d08c717a91c91e54b5a106d30600ae2cf6aefd4fa51148ead00639790b2. 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/NLE422303104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf1394713d6cc9af5365bbaf6eab5dff2b0cfa66a5dc7af38a65f303c38b28a. 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/NLE422303108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3ff4ac31b8f3edd428fab55c979638793370e1c0ce491e52cd4256ae832c73. 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/NLE422303110.
Songs from the Chinese: No. 4, The Herd-Boy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693d4d56554f57d814952cdca9885e80eb9251843be6d8c4e8cdc01429990a2a. 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/NLE422303115.
Songs from the Chinese: No. 5, Depression
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d589d9706313824c2e33cfd505804024ce5c04e4d8ba7502df49e98b758c78. 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/NLE422303116.
Kuando el Rey Nimrod (Avram Avinu) (Arr. Jeannette Sorrell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cdeeb17ed0757741218a5d629cd3dc7417412729a9856d7d2d1f36cbaeb2c3. 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/GBELX1606149.
A la una yo nací (Arr. Jeannette Sorrell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432517bc43dbef20459dd6a459621fe415759e830dce199920e8101bd49ee94b. 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/GBELX1606159.
Ir me kero, Madre, a Yerushalayim (Arr. Jeannette Sorrell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33173611a24edb8dcc5220e5f41fd4df0cb68b6adb2b1b82c8f425dc5cfc1ca. 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/GBELX1606148.
Tzur mishelo akhalnu (Arr. Jeannette Sorrell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c85f9372cbbd47b3527d353b418e9935a92a9cee8f8fecad85c1b9117e62a92. 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/GBELX1606163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f58411cd25f153a91ce3340978ea89053d1802a6c5b6ca3c55809a4e3478645. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBELX1606157.
Hazeremos una merenda | Kita'l tas (Arr. Nell Snaidas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e5a886ad52b8bf6d95f8a4c39effbceae2ebd3d0c534924fd197a21ecbd3fc. 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/GBELX1606166.