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 0x9bcf562a668e4fc3d2859eff89ce94cef290cd3aa33373470a3abe5b5d7f9226. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8db5afd0-864c-45d6-ab37-5eb30ff86978.json and https://artists.proofprofile.net/proofs/artist/8db5afd0-864c-45d6-ab37-5eb30ff86978.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Now We Are Free - From "Gladiator" (For Violin, Cello And Piano)
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 0x789dacb5254694217674509197b67cca865585723ab6caf3d391e05e400490ed. 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/DEZC62379867.
Moon River (For Violin, Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e59874d65c9b37e84ad78f685912fde31aefe0dd069b8a018e67f0d808342b. 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/DEZC62276392.
Canon In D (For Violin, Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967020ff56d466e03f71ffe528d5bfd13cd375aaa7414709fde7d2165430d239. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62276393.
A Million Dreams (For Violin, Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aea00c6b867669c68bbc99bcf3b94ecaaf0dba6703c76c15ca6ca13207d0192. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62276394.
Beethoven's 5 Secrets (For Violin, Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622e03487d5150532d27bef9c4165c59b86d2638bdd69d81c4a92292a12480c1. 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/DEZC62276395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdccb27552353b71e18931e66f5779cfc225dfa810cb35c612d816cdaa29026. 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/DEZC62189611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd15a912f5eb0ea056cda43ad1c7bc55ee53d20797bd5c2fd9a74d8689db7e75. 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/DEZC62189614.
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
Sag beim Abschied leise Servus (For Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2776739887819d923cec5eba149458688247d5727ca7a2fb9290edf4c6fb256. 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/DELJ82077240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80415e756084c891dea8278ea2e10bc391c28e7b131efe5fa310e1e22212d54c. 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/DELJ82077242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a3b44c2bd83e962b088e6a7c740e00065c1c815b406a1d74e8599d862fc6d4. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DELJ82077241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1077930c191ebe06b431225f1b1971d91583cfdcc00d03b35e392c634ec5e499. 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/DELJ82077243.
River Flows In You (For Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb08030936e622103906f6f344b6dd5174b26f77266c1d4c1229aab9080c4e2. 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/DELJ81944399.
Tage Wie Diese (For Violin, Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511a7b98c77ca6e560fd2b9c776c1e7218cab0a5d97413fe16b4f504747e254b. 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/DELJ81944402.
Thank You For Loving Me (For Cello And Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90459204e640957ea9ed6568c620c0de6b6d1701c0aff32c7a7d8906faa07fe5. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DELJ81944398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce4dbd70ff8388da40e33f16a37b610b0067f2afcf14563caf041026c6070b. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DELJ81944400.
I'm Gonna Be (For Violin, Cello And Piano) [500 Miles]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06ab353d40d1aa7224af88470c4a18184d421488c708ea9ba7c74789f61a94b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DELJ81944401.