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 0x5dd3cf0bef964643c9b2caf85a267a9fddfa40d46dd2e44680a2e2defb1fb2a6. 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/bb415ab5-1c5f-4f72-9b4c-ae77ca6a1b42.json and https://artists.proofprofile.net/proofs/artist/bb415ab5-1c5f-4f72-9b4c-ae77ca6a1b42.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 0x34e3b6e5dccaed204914349bb802d3b50576b87ef05f241ff538853955619234. 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/NLHR21800247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf878cd11f9e4cde78554bd4230ac45d40a13994b88e431c2652737cffa42398. 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/NLHR21900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4fb28c032b34c5ddae32d91790fce0218b011a1704b213e282357a3a1bf66e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLHR21900648.
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 0x264e89068ec1e53ef12288cbb0a411c95de8e398b854a74f3a34b3334cebebf3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLHR21800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2301d32697d04c41f82e66c23994e5b7ba63ffeac23158a95373556d7dd482. 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/NLHR22300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4830afeb3383336fc889c0bfc7168362694662ffd21641c7bea19db7a354d2a0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NLHR22300916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8905231dce66c5f4611bb326ba5760bae3f8b932acdad22554c0888ef2c9a16. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLHR22300854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc134e31eff99c82b57750eef02dd03a4d58304bf03bfbc5c904c8d1b0d84ce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLHR22300855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a43379d17c90af51e35e4a0a82eddb694256a110eae5f84a0c94ebe0ccd6566. 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/UKU932360956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a90e7a929c43fd448d42a81153aae9aef969b1150afcac81128cced6c323ef3. 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/NLHR22300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f02f8bcbce1e6c2887ede1c9647bf41ea541de8f78c9833f7880284b44548c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEBE72200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78dbc762ede7f42addbf74170bd1e4d74a52e5d6d9635001faf4e5a8ca4cf7e. 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/NLHR22001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f1ad325239ee7de28cb6e7bbb513801a052ec95c16714cdf4b45dfb01362f8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLHR22001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f56b9dbe48b06bb1b777842eddb44896810cceda404f620de129f5999765d63. 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/DEBE72000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a80abc1833dd1e6d8790df354020df1a1dc33f875c831de1e1df1b01fb1866. 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/DEBE72000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be0b4e26230bb9d8d3a4af27c03d97bb3ac5ea9ab35c1a9a87ea54dd1271e6f. 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/US83Z1816906.
The Thoughts - Kamilo Sanclemente & Golan Zocher Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be5534196732b970bf7235468e586fd802b469e8d88532a9727e90b62702b73. 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/UKACT1862506.
Profound Shift Of Conceptual Awareness - Hernan Cattaneo & Martin Garcia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf26815e9175e58ade9f302e35de991be05e2e134ce3cdbf33d9093239159aa1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLHR21600512.