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 0xb434537549bd214118ae20892d0747810daa2ef8fffad13d63493c30964b579e. 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/6746d2ad-0a56-43b6-8b31-1c0a6584fa7f.json and https://artists.proofprofile.net/proofs/artist/6746d2ad-0a56-43b6-8b31-1c0a6584fa7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Peter Maxwell Davies: Suite from "The Boyfriend", Suite from "The Devils" & Other Works
The Yellow Cake Revue: Farewell to Stromness
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 0x0a2e4e91be065ac13d79cbec7ec34a48e13f6cc3bdd68311300529e8e077b402. 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/HKI191208320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8162d2a93a4132761ef48dd32581c72623e4128c1cbe5f0230946fd9a644e5a2. 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/FR59R1782745.
Arvo Pärt: Magnificent Magnificat, 80ème anniversaire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cefe831cbe185584a0317bdef5abd26cb012c9793003f2843c5b089e4ab5a1d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX211506003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52018ac4c1d92bd858a9ae965b6a9fa48ada8ac59f95d3eca1b4cc0d7727346. 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/FRX211506011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacefd10aa2699b8427d6891925fd8e65e87f2bb8bd3aff7c67c2787f0480fe25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX211506013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e7b9574c66933af2262e6018d6de6e0cbc16c6d5bad0ec82d3c9fcbd49638. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRX211506002.
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 0xd33e787a33b6fe914570018e272af6fca27ad336bc6117ed5aeae68382b7d252. 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/FRX211506001.
Sieben Magnificat-Antiphonen: No. 2, O Adonai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb576feb6a674f88d66ca0b2472745966f3a5ef04292b6060b6b5931fe2a52d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRX211506005.
Sieben Magnificat-Antiphonen: No. 3, O Spross aus Isais Wurzel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d512b67e1291333258864fa95402ffff83fdad01441303bee73529b97025be. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRX211506006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e0dc6e0366a1e47d4560b2474d54ea58c389cbc548ce075ca1f6472d099af8. 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/FRX211404011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ac4033709aadf62eb465eb8507ff34cc5844f07a0fa7f598f0d9a34930fc0f. 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/FRX211404014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e61f26084027fb582b16a3161587f4e80c35506499893a27082b695b1f63dbb. 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/FRX211404019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9a0e94ec8f31f580e5f0de53ac0de6a184f3148bcef96f31324bd0e31bb98f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FRX211404006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7a35ed3083c2c51d31d47d3ffa84c5b6aafc2fbe474bbbe581472619fffef1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRX211404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f555933dd48ee5cf4b42bc71d3986d694f3d43128117914e3eecf03f5068d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRX211404008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba85ab56f043b7fe37a18ce2cfaf1edc64d64730bff53e012b0a149708ae8f6. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FRX211404009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc0880232d6db6c17e832438a5c681031382fc0c4c7436376efa4b8527def80. 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/FRX211404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7238cfe993fd710791d45754e66eb599a92c20190400aec784a47654640484. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRX211404012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0071b6f1fe4ecd279cc891b38e56f18b6fed48a112431a0868384edd2b9c8e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRX211404013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401b762344f64bae89ec8223054a00dbd31d11bebc527e53b072a5b8719b30f7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRX211404015.
Prokofiev: Peter and The Wolf - Saint-Saëns: Le Carnaval Des Animaux - Butler: Dirty Beasts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318199e2138b1e91be37d5b0134f9e0f85f59f769bb5a8429294ddd7bbb523d4. 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/GBVVQ1202518.
Le carnaval des animaux, Op. 93: VII. Aquarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c1b4a3ef215b1e1a6af4fc81c5041d032cafcfc2f8534525dfe0bc5b05c4c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBVVQ1202508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722d46e6b2d6468177981854f166bce0de2b13adb7e315bbcecef91776a74db4. 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/GBSMU8395140.
Yoga Spa Lounge - Chillout Relaxation Music, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031dbff41015f3a6ac4fcdb48a923f697b80f7ed2078eb30af580256694d5740. 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/DEBL60665150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd955683593a595e8a854de4f66329e546b00a8e4b6103b6e3e9f10aa250fc7cc. 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/DEKU30800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d53c65db3f0d42be081a429a6dd8361da965e8cb244ec2f2071242119a5f4da. 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/DEKU30800006.