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 0x7b1c480d5243604ec8861fc657aee6a766879177d2b5cc059d7432d5f0b411bb. 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/a54c8688-6ec7-419b-b2c1-1f7e23dfc39a.json and https://artists.proofprofile.net/proofs/artist/a54c8688-6ec7-419b-b2c1-1f7e23dfc39a.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 0x91ebfc3ebda7af3993cdfc6929f36ca4f98cf2039d71ca0fbc4da935859ee2ef. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF2183521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c82621aa91adcddcec1531b45e11686c33181d8889116dc1478370f7cfcb671. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEQ022271431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae5cdd2c29270eee6af6cdaf24616664ee52a6a51fa25fa07c76e63be83a753. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/US3DF2250315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508ef5d5bd2071da20d195920c7b0dd42267d7596b9ec98790a691673638727c. 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/US3DF2255745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1671270670282fe41bdca6c1d2d20826188f3c38d556f496fef7698cff894e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2223227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947ae10a808358a62bf6e66fb73ea35a1cde9250c95fe8e56a6c601f9fed01bd. 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/USANG2276788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48adf18c89ba1d12da48387ee9d7e1c034365aef079e63f017d0536c3a3e23e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMANG2206405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77943310920b13a5f7912c51dae42a484648ead6c3b8fc54572df2dbd3210d5b. 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/QMANG2209405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e641f52f9a8ce83e14d14ac14af5b4fb45e44691a3a350167a0f3b077cc3d6. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/BCD4N2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9c0a43d9b0e185fac6dd009dbf5fa324f4ec0512289e6e9b70bdb1cffe9bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2467044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7068ccf42f138a482d6468ee67de535e9b0d847c6003a49038df47f826e4dbc2. 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/USANG2431994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ddbe27bdde5b10e3dea4c873bf470f279fd0f2b064995eab47eec92bf8bc1e. 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/CH7812416518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0f8b6d62687e4ba86fc8e10de8027b93306487aac54a502099fb1815384b32. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USANG2477631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fecd89e7059dd7be101fb876e25c9ec23847a6b1d11a74601057b3dd9ff7fb. 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/CH7812424226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca980b950a481f8937a74fecca87ce4d0ae5ae5078636e614486e8a71bdc1089. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEH742527849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428fb6abd521aa27e57da7e78b932d00360ffa61160ec0570d75d46df7d9471b. 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/NL4YD2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad66e9bb07f7620e0cdb5add1e46b8fcaae74dc292a86bed75a324fc48403b5. 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/QM3DF2289252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7068ccf42f138a482d6468ee67de535e9b0d847c6003a49038df47f826e4dbc2. 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/USANG2431994.
Mellow Dreams 4 - Chill Beats Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d18541960e4cf4f3e75bfbe28d9a764ff10bbc027907a0dab78b7f50e8db66. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL4YD2200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7712ab18c25876718bf710a2d114b102905e1df826875f343b8f72d93553e2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2407669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e35dd90a2cb387af1f51e051f86e905d3715d7be401b9d2f4a0eb93600f64a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2436467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320740cee4d573792c0304bb314786c6720a7b31f35c2bf06c0b59e1f0e8f6c8. 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/UKZGC2408320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752797c9838f681515c32d625dfd1b912f4a6931201d8333e8c2eaac411cf04c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFH2420068.