Malbec () is a purple grape variety used in making red wine. The grapes tend to have an inky dark color and robust tannins, and are known as one of the six grapes allowed in the blend of red Bordeaux
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 0x07963f6def494a2de743ab8924a0a0c33bc9eb9dde7c9cef073a3330d560f9f1. 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/0a728d0f-2f4f-4a05-98ad-0a9a95409de6.json and https://artists.proofprofile.net/proofs/artist/0a728d0f-2f4f-4a05-98ad-0a9a95409de6.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 0x6858deb99c6c6348a86fb8f0007e9564378c7eb35fa12728c7d4bb83c0e56f96. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA0G1608333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf720c1b1c897201231db83d37bf1b5b4654daffcdb5a7cb9416126f1d7b14646. 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/RUA0G1608335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e494926adb84fdc793834a7d8cba089e215bda11c3f217ae098d2160926d2. 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/RUA0G1608337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288bfd6bf9859da2adbc1d3968b4078840485d117b6edf4e5ac78076f4b0a530. 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/RUA0G1608338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214bcf52043a2c8930a089d5984c6c4d6fec39ffd24fece8c882d839b6fcf9eb. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/RUA0G1608339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bcf395282c94d154c60a6758226fbd171f1705c8876162f68e8834887667b4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA0G1608340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94b8fb71111432b65a66f59ebfbe97bb7928346e9a5e0e7832c143b3dcb67b0. 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/RUA0G1700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ab323544053ea24f57fafeb7c672bcc2075630b91813a0be0231b53ae3ce5. 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/RUA0G1700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f76ada702b0be830cd25d27a7dba848979e8b0fefef7c8d80e16474e0b7ba6. 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/RUA0G1700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5788e585c72d6bd8fa1a3e535b8fa2d23e137f90481887e6b1364bdcab14bb55. 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/RUA0G1700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce6145fde44506395096f9291373510bd57719aa3d28481a07ab5f1adc3a412. 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/RUA0G1700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d5d52a894783b6e32dfd55a2cce6c92a4edc5ad2801a424c07799fea1c2b83. 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/RUA0G1700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8bf511372d838027cdd8655b84007d06a8d49046da1da32be5aa55477b129e. 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/RUA0G1700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb73a341f5aa2a29cd311795de794376b3218765141aeda63fbe695c38d6e95. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMFME1914222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702d4357ed87471a4bd8539de947ce206fc66b301c1e63240516468aca94662f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QMFME1914223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa753b0e61a5e11ec1e58e2fe683de8470dde5638f0da9431a99ac5b37dfe2ae3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2019543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cfef23b6afb54078eaa9924028cd9ff277bb18c0b20e7666f4cbfa976ff559. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMFME2181449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e533a6c2b0157841a2f006d2594312b5b479ffd94420032705776817292778. 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/QMFMF2352161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765143e78f6901fdfd8af068cc590a8dae00da17a545062557f75ff29df9484f. 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/QM6N22476577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e533a6c2b0157841a2f006d2594312b5b479ffd94420032705776817292778. 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/QMFMF2352161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dfcf8ae0e776fd90da72c9fdeacce14de5560d19fdb6874525051600728d0f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA0P2467112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464004d833092dfeed45b5a7dd237b6e07252e61a526760df1996cad8cfd0ea5. 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/DGA0R2442769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850d57c8346cb4ddc04e1fcf761d771b346a794793b3fb903343fe3ee50deeed. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DGA0S2423824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93d41ee62f5ec3e6ec2ba964fa624ed26161f579cccd893b9761cd857f5ce62. 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/DGA0S2423825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dfcf8ae0e776fd90da72c9fdeacce14de5560d19fdb6874525051600728d0f. 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/DGA0P2467112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cc31056c17edc7bbaf9b2d18935d3b3c28116a4028a374b6d1053c2a4a07aa. 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/DGA0S2423826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9880053373bca1d8806362e651576090aa3ce3b25d9d0e0ef7216341d4d3fa. 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/DGA0S2423827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d99c40eddd943f5ae006e3409d0bbb55ead7b8aa54a6e8330b200138149a39. 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/DGA0S2423828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe278549fe053ca8f36554085028a89b041f059b5813f7a8b74798511b6ad4f2b. 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/DGA0S2423829.