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 0x138d381de92a4da5bd711665f02c658dd97666f89f6b4687359d2814f18961eb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/999befaa-45c6-407f-bee4-6dd084690d65.json and https://artists.proofprofile.net/proofs/artist/999befaa-45c6-407f-bee4-6dd084690d65.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 0x99af336b577b12aeedaa1b08eab9f9ce0b75b7ac8e51aecd64ee665fee85ddd4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QME9P1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e5a12850db0c7cdb624183b51e85918567d99feb1f7b0f700e0b70ae7babdb. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QME9P2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf06e8826a1aeb9f748f6ac36a60b8e14196612063c6a930cdcbfb155393776. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:01Z), 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/QME9P2100012.
In My Life: The Beatles Piano Covers Vol. 1
The Felted Piano: Solo Piano Originals, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ab3961fcfdbb852a0b4eda364abab3f9bf5dee86b96c82250f1004c591f913. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QME9P2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d099f3a83a9b9de4bf3b8de30cadbb4963302645494f3c7c0494f27963ad13. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZ6BJ2305906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe2148ef47c7fd6aea6e2c565790d97aa09d6820efabb077f7f46aded829593. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ6BJ2305902.
Winter Day Dreaming (10th Anniversary Expanded Edition)
Charles Szczepanek - The Solo Piano Project, Vol 1: Transcriptions and Arrangements of Delibes, Dvořák, Elgar, Massenet, and Puccini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a0e567ecaebcfd126080ae959022f1d3134ef217776f249628a82539f040e7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ6BJ2406801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ffe8a9711bfe9529233b12df709dfed69c24625d0ab8ee4831fb79a12edcbe. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:35:28Z), 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/QZ6BJ2406002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f210cc6b7597d3fd97892470bfa51ce815ae820c546ffa5d7b42b2eb6bd902. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:45Z), 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/QZ6BJ2406001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed01660eedc286fc373505bded426f5d362bcc2caf8cb4b404cb9ec6772b0a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ6BJ2406004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff74c418adfd96b78e48dc230e88ec763fef40257ac9b53f1a60f751a6dfb3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ6BJ2406301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c26b579c6a2b5ea14041273e50a8edba1a17b5a39c38a491c781e92f1b4d8. 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/QZ6BJ2501201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814685fb9e5ff8baa3d4d75d43419118ba0a39daf3b42c83318a3649b0611930. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZ6BJ2501301.