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 0xc383bc6760978bc5fd98e91fcffb72b68e3279fe3339dcaf110a503d0326e4d9. 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/55ff55de-76c1-4a70-ad15-15f43746c02e.json and https://artists.proofprofile.net/proofs/artist/55ff55de-76c1-4a70-ad15-15f43746c02e.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 0x317db38c300464e7a0805335889399cbd626b569d5e20660af8d1335f024f144. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/CH7812068991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892da5612c75de7470fe95af1bc8ad986e533e7bea50e09fb06753b2ca204555. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/CH7812076281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a26b63a491e655ce4987f2b0e53d4833a0f8a3365dd06bb11ef2c209ad761. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/CH7812076286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355eb55fc01f1ba80dcfe24edbd81ee4e410a5fc1513e381ccae9f0e10e15152. 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/CH7812218824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8056281da594e0592d11fd57f45888e39c09e517cacbd009b5ea5b6552395c87. 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/CH7812231686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfbe632f9d4368f7b9e400208ade70e9695880cbdc66f6b8bf1389a6849f9d9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/CH7812350825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aefa3bfcc26361f02b9fbbdd62e0fe34785c784a12782079919ef1afcc64f21. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:42:38Z), 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/CH7812354413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850afd0a7571c32eed31b30919208d7ba53758ed7141e40d98aae8905a6c2b6a. 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/CH7812354415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e9ec9111307684d5f7975c5586310112c49d511b4cf05e03373bfbb02523d0. 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/DEZC62380542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb81409e7433816c3253b268e193c74d9ed61d9de2f5c9fc39566b7c66f8b7fd. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:44Z), 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/DEZC62383630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b980de5dca1b0d7c3559e554629995012fda864c03771e71022afe0c0fa1d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZC62383631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc822a87a75fde5c13946b0bb4835c0313699c4357b4f1b0c47bfb7f23b3cac19. 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/DEZC62431599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3615a040cdd7ba0b14d48859edacd0c89b43f2be7013f18cb0056be32f721cb. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/DEZC62461512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf8c99a34cef321e544deffcbf45cbba6715d777ea4ed9411e14fe4187eb7ee. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DEZC62594685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f84ee8dbf737243d154b1230dbe366d93fe9d673950129cbd828106b72a486c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DECE72203609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8780ecd117188b2a5b51fdfa7734176182b0bb802498e074e025b40e7b1f4323. 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/DEKF22200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5989783c041fb0f15e9dd5d4f6b072a010ade57a735561e862b747fff11762e. 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/QZDA72513341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6d458633ecbb2a8718927a518db2fe8e8c3ac92008b020bce2930745e842b. 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/DEQ022150500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b69d4471e7ed267f82dcd949039fe96d44c2e7270d5f278052d271578bdf9e. 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/DECE72200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811f72af0579d58f98aff5230e0ec58cfddabc6ba518347d6bb909477cdc0fa3. 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/QZFYZ2255224.
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
Radio X (feat. Kana & Mavie, jaynbeats & Andrewextendo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80632b28460344fa4e26323be302bad8dd59d0b63d45f5438386acd23d43db60. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEKF22200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bee2be4a8075ff0c0c2715f4543fdda1345fc8ee64d9879404d6a8e2c9cfc3. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/DECE72400396.