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 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 0x13bcfa01aa6aba033bd1011ac54f9290711e5206ba11fe3da162a5fae781412f. 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/6e09eda7-8048-4627-996d-e1ae06dd722a.json and https://artists.proofprofile.net/proofs/artist/6e09eda7-8048-4627-996d-e1ae06dd722a.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 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 0xe389c4e0a5840f976169490c2e84494d033a3be0c357db905e47d648a353c933. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZMEP2411321.
Let Me Sleep (Instrumental Music to Help You Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579332156c76473aa1d9152b460f070d0e0862b984bd0ad1938eca94714f52b1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEM2469919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c52be2dbf81740ea5ca4e57f454f644f562b5cb2adbba8b42d0675da8774def. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMEP2469143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb467a981df45c1d350d9b3a2bc167c61ff6238056baa6ec4990de94c5422fe87. 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/QZMEP2471419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb2cbfa862310be64ed76bbbfb59a8d56cfe43e5bdf9fbf9936b2d7e5834313. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZMEQ2407183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62ae4c44d477a3044cd3a4af0f2546ff39a262bbd5d66bd5b1bb50fa460fe5d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZNWU2404699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc701f983dd6f04ab021f430b29656ff7c0bf2283ed5389f0f4f51835be84a6f2. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZNWX2432198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f9f617eddeb65af7930cbf332cba7b9a35fa602efa8ac8760f97ff6448aeea. 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/QZRP42405368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd155df9dcd697e65d3aec2a22d5d184bd653602b493fb277adbb0bda4ec50dbb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTBC2491703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640cbf278017817496cc9765f82188218e4cc42a4324752333d1d6f7d8dd015. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWX2402384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f603dc5ed333f059689ed7aaa8b1bf74e7ba73dc22ce290695b1baa1be2976e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZTB52466602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04c0cf7dc3854084fdec57fa332caf6be15194fa58e91f0ff6f1694a650c10. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZWFN2406727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309a8ce4e07723d22fe02a71d2c7b3619243c8d2ea8e338ad9531d0cd2d044f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTBD2474418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b7b6f0232367635db1093a3993f6b39bc1279cce85dfc7e755fedce066479d. 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/QZWFH2434322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276fcda1876df4eb76236bbb4af0053ab75a84bc4663f340b17810876e6d90f6. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZZ7V2449859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2537b75124f03468896e144c47810f7ef6f1ab38c0f410a8c1f5aba7fb5529a. 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/QZZ7M2451937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070e174eb19bec4d931b8ff3e50760650d5546f9d69ff237d5b67f8c3739e55. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QT3F22453067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67408948dec3cfd1eca2c2e4b9e2c8b31191e5af61a6f56e0d4ec049b47f9ccc. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZHN92557576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6b9d44f019e33e9a69456a81ac4add926f53150f26b3b53ba304c93f813e33. 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/QZFYX2561688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e93a7c7eead0bcaade29e2f3668a0e5e0e8e185e3919472ed1facb64dc6c177. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZHNC2579373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb893e4ffaf294d947c71591ba0f0257a56d7a25b27b84572872dfe2da5993d83. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZHN42572727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de3eca8aada27f5580558bf1afa3a0fd2fd9322ba037afedb19536bae6afc90. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZDA42528693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56813a5949af31357cda1d2736a3b56de0467507c63dc3503e3414aa01c8cc05. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA52511593.
I Found You Still There (I Am Waiting for You Chapter Two)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c80862b6fe5a8ef186e415f546291ebb5cda327b673e4d8ccc4727a74a34f3. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZK6H2593213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ddc129c5d8baf364e02f9e12f66d55a4d8b60ef148df5083f3a92625c79f98. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZNWX2521597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3b12b9c58e8cf5c5f8677ba8d7a4300a24a074c24169b44948458a6fef04ff. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWX2563224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90309acd827421c86fe90cdb9ddf0ce882d044067e645cd20b5b67353502cfb2. 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/QZTB62556483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5a05efb90836a9c9ec236735de830c09a030f306ff2035fe85f8bf9bfd79bd. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZWFS2551292.