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 0xf2642beba871c34aec3979e99b5f793ce472d7f3bb29c7d90b2dc72d03df58ff. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/960ee18a-0bd9-44c3-ab63-343473c1e6a0.json and https://artists.proofprofile.net/proofs/artist/960ee18a-0bd9-44c3-ab63-343473c1e6a0.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 0x2a582b1f548bac7814596662e1a6cbf7823527451307fa78864b048ff881cfbb. 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/CA5KR2389541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90e4124ff45e811b04bdd836dbe24774499caaaf774244bb7cdd08b14fc66b3. 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/CA5KR2427156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c93e059df22bb7d28ca19aa14eae364b2e16953e910c139dd8e523f8b5b878. 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/CA5KR2437227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53cb2133127bd2e7e4c13129569c8d2a118afb9c2eea417b4104db6dce6296b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2450968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebf74f60837dd3e29b9547e5787518f0f801d23b3548c49a1db746675fe618a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:53Z), 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/CA5KR2450969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b040a29066d336d2bdbdf4b82406cdd02bc968ca0571a0d3d6e4e3d855731. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CA5KR2450970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f5b936f015ad8147f127f98f8dcdebb48f1f973c1b3065be7ea852663c8606. 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/CA5KR2470201.
Un Parga En El Laboratorio De Las Ratas EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dcada8d6fa42df1990ed91c2bb2c4bf3db407ff092a2ad036fbcc778b98ec5. 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/CA5KR2484009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cd3913bc661b05348a5ccb4b7e30fe7a0206c90bb3e281d27a6eb4eb85891c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CA5KR2484010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fcbf242000173f1c5106f30a578c84f7eb224edb30c7eb7caf24b23eda08b7. 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/CA5KR2484011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc0138587a761b113178f9c5109ab0c7bfc765f34977144408e9f54f56be52. 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/CA5KR2484012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f782ffb13f1f2b190d617905e524459a7e38f070091337430b3fad8397ab0d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZG2X2413194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08318dab233e6dd278f1b0fa3267be59534b05ce8fe1003751d1301eac5c0d36. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZG2X2417802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e99aea51b0921d40c146776f045dc167f5571ec8073b6341b82fbe47816d518. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZG2X2422285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e693c87f310fc5ec5ad8cac9bd8ddf18b15a9b90d5f080695925f23431e7fdc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZG2X2505358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22817a7772bc1707f0e5e80d77e31dceb3bf3e63d40804a223114e344bed215f. 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/CA5KR2485489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a41eb17adb8125973770dc9ce7f7d1ab7d68ed22d3edf7bb4f14dc611b70c6. 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/CA5KR2485486.