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 0x3520db32e5ee8bd5ae184717a5d2fce5879f0bbb6f7eba75a50981a97f64e34a. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cb9fd0e-2c64-4367-9e2f-04c2d3e46071.json and https://artists.proofprofile.net/proofs/artist/0cb9fd0e-2c64-4367-9e2f-04c2d3e46071.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Like a Father - Imperial Black Unit Remix
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 0x0c476ef66ae843b82de016cec8fe51a06253489f78d0f01bba52880fc1b58511. 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/US5NR1821701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336700e74d0c2e0843a549449495d0a9171c3137d449e84515b05ad037a783ba. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US5NR1821702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c5dc66ffcf871155832adad4d5b7eb0510b86901ecf361b77272af6594fd7. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/US5NR1821703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7be6739856c6069edbfdc931078f081c6f25ec485dee9706910896c7ffa244. 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/US5NR1821704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd514e3341a178cc8c9e0307a501274e1f4e9e4942a7412338925bb3a7018588. 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/US5NR1821705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203bdad049e77f767f1d71f2c774f6657ffff4609d1ed6bb2f906d6e823a1b97. 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/US5NR1821706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686b1bc52574336a0b9842e0c32911f1ec827343f78bf9afb67aa365a156b7b. 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/US5NR1821707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c5b4fabda8b2381e0fd189f442f4921c2a685457f67e36dc08a2a175862ef0. 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/US5NR1821708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435270d317247a239d3a6a884ada3d6bd42f8c635bd274af7013622057423fc1. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NLCK41069773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8877b6ab3d2ebfd471dae301308062b54e30617dbb973fa55ad5d46b6181b99e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41069774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ec164ce958eb535065908bec47a69cb7b21b67a1808694bb10b6ebce6dcb6d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLCK41069785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e5409e9c9170944223bfdea6f6b548aa222ad56d8243156fec695d826e7a8. 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/NLCK41069786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2de58358281abf32b214ff114e1cd0c77dcd8b99a7dd6b8432c93dd4920291. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NLCK41069807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d9cac24ba718cc9e1f6dc6b4f36a9aca1b28da94750a88531fceeb6357a7dc. 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/QM4TW2031640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1420645949555a8f956c38509b416c3d3d951e4ec8438c0b39f637024eba5f18. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QM4TW2031643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224bd52f0798681325753a195eaf1a273149487e43ffc051106ef3bb4293af12. 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/QM4TX2003613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe8088305ca5f457ac610b62a5a71be918c2241b8aca0add52fdebb2c575c0a. 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/GBLV62002827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789bd1e8ab46ce224c7ccd4853239806c9fe88bb81e92dafed4cbb603108fe35. 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/GBWUL1950541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b85e357b666178adbf304c6c310ad38ae1c388a1801d89bc0604fa2ca06a29b. 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/GBWUL1950543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad91de5f6db53382ce536214066dd02cbe4564ae30f500e0da89d8877eeb869. 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/GBWUL1950544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f5ba304d8dbb820e8aa7ecd46c17b854b9e325b72909b3bf4072b564ab2d59. 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/GBWUL1950546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9924315e404ea25356ede7e9f681e059afa1bef57d91c9905751a18194dd788. 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/QM6P42086626.
God, Ceinture & Miséricorde - Club Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634dc6154059f736cf067211bd9048d78c42f785f9f2c5552fcd88fe03d6583. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM6P42086628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6be5ee2aaec7e0f57f28ab91a4b9e5bb5b743074ba119112789efc65a3d02d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QM4TW2057579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448c4b37caa6f499f5de5a7e0412fe7fe8a4547d7d20760819c755677a953472. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM4TW2057580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a11564ce6300f2543f1de72763b92f2064c458e1c35b6e9925939aeec89b73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2057581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf647258d05327a80ed3003a0288964512029ddb4ccc7b3dbb0b3cf1f1d121aec. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TW2057582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dee3e1fc59c00ece4830bb3ddb484088a71ae2bcc2d1615e21a728092b31a8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXC812090239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63651b18a10c3111020b897f46a1d5d46a9def7a89e5f4a6b3c999665a6f4dfd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BEB702199103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f83297fc44c0dc8af322754131725643667b5f7e90f3c729c81fde7f2993a76. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/NLCK41094402.
Resurrection - Imperial Black Unit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5323d48acef3ded7065c17a95fa812bb6837c550fcbbd0f664a52de2d29fe50d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLCK41094408.