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 0xef28217babf7538569dc6b12c8f2419fec79d11ec760f1d8e1b71e060ca82405. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/379a1726-fcda-4444-8a7c-57c39af4fd72.json and https://artists.proofprofile.net/proofs/artist/379a1726-fcda-4444-8a7c-57c39af4fd72.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb130db900a79960deba0281ea3dade3e646b77b0ce07ae0188007b55cb00773. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:02Z), 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/QZMEQ2170304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5dd3652b199f02f162cae1893ab48ceba05f98f3a2ad9af2a5b80611d71eaa. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZMEQ2170305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3eb8336d1c2327da42187308bd28f8366d2ce5a1c6549529664d059c19c60b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEQ2170306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c634848c1d797e9d66dbe301b06e2fe7eccef129fde19ab73d7b693b203f3e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEQ2170307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5333bee3b4c2404062259acb170cc269eb9c4620cbe30e72e4d4fd435e7992d1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZMEQ2170308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23499877446b9768cfe85bf02255ce26129ddfbd311f15379cb616938bb94b6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMEQ2170312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b2b8a6f50f4f2f91e42987a11fd5de37b9b0112aaa93d0ede42ef80c010a51. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:42Z), 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/QZMEQ2170315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6384e77c07edfad6a677edfd1910a9b9f16bb3bcc80adf8669ce4506930a286f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEQ2170323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3838c2e34ae755237b08ef651e301c4f2b092edbc3aa6049a1ae261af353d2ab. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTB42224883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90445ade79e4388140c363a1c59a72debd1f4b7eb42e5d0f34f9c4ca8bf46e01. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTB42224884.
Wednesday Plays the Cello x Paint It Black (piano arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078f4b39616984578fabd01ea9a734da1383e94f0bd0b67a04f5108107137d26. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6J2334981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492d09a6e58991eebee0d348e625f8db87864ca5e6a093c1597f819bd8d6e94. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6J2334982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb55e88d1a1987d20966d178b077b297057dfcc8d8d930d3ffd1a6283f79485. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6J2334983.
Succession End Title Theme (piano arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0fe4e4ef5f3bae355fa8d4217cf76b96f36a604cf0254581284a7d1e632cbc. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:11:33Z), 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/QZK6J2334990.
The Last of Us Main Theme (piano arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4305ffabd470cbb0b958052986c2b4bfb4b83c52b437b47888231e920924633c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6J2334991.
Succession L to the OG (piano arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b7866b09cf242d15e3a67d4fcf01afc8b3c112ed4086dfa1a1941b73dc8c78. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTAW2465646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219bd34eed74f4ce9276d5099842ed4183440e8bcb0d619d3927ee66aa1eed68. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:58Z), 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/QZTAW2465647.
Can You Hear The Music (piano arrangement) [from "Oppenheimer"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa870998d0eb071799cb2c7b2dce8ed2c738fa284c1bdb665bc2911cf01ad92ab. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAW2465648.
American Prometheus (piano arrangement) [from "Oppenheimer"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f23f2f1ac9f96c75228279f4787f42e5be8214448aec5dece327d309899741e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:25Z), 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/QZTAW2465649.
Destroyer of Worlds (piano arrangement) [from "Oppenheimer"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e89fcf84cd5ed0cb7931273567c07e2a7af4fc4b9b2696961c1a22e57e137f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAW2465650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f0bebe6cd44154241bbdee446003eaab38b17575252495b4e2a0a9d93af06. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAW2465651.
Comptine d'un autre été, l'après-midi (from "Amélie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84334916c4dd4c55a9d0b3077ce629039943c6eb3da3ff4a9668dec164ac54a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTAW2465652.
J'y Suis Jamais Allé (piano arrangement) [from "Amélie"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4a545842ea13de4685ba50ec5ac235e29fcc677e854d57658f83f4803a394. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTAW2465653.
La Valse d'Amélie (piano arrangement) [from "Amélie"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0f85c415648696c302e8e3f037ab3225c85be80c3e3e6861a4bf16db4516a4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTAW2465654.
La Noyée (piano arrangement) [from "Amélie"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd47e0538ecefa514b2fea70c1b9b72c14b5196a29f3198bd74c7031a0bb12cb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAW2465656.
Non, Je Ne Regrette Rien (piano arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8542071359a2c771fe5347202463965b1ded28b57a5e52cd6b57adcdcad33f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTAW2465657.
Paul's Dream (piano arrangement) [from "Dune"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53510503c2d6005ac19e956a53278f0fa0820303282d34c5b348ae34e7cf2f0d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAW2465658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb921cf44bf7279a709cc462a4abeb766cab24b5c9c0436a9b74eb0a5347f7d9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAW2465659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd795df8c46d0ce85e186eb7c045f4d542b376c44699d003b05fa91f0f7c9bf5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAW2465660.
Elysium (piano arrangement) [from "Gladiator"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717dd0fc97d7dabd303e228e1cf98d3c5697f71020cc7d133cf267e61a1ca801. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTAW2465661.
Clair Obscur: Expedition 33 Piano Covers