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 0x4240bb0bec6279f456bc3df37bf831ec8fdc0a97052e94366ddbd808c199066b. 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/0e580a32-56b0-4fd5-a571-008b1d98e3b7.json and https://artists.proofprofile.net/proofs/artist/0e580a32-56b0-4fd5-a571-008b1d98e3b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heavy (feat. Boyblanck, BBB & Urban Poet)
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 0xb7d0ebc9abb88d70c6bf8c8c3febbcf75fb76cedb44e71f0b95b0359178e49c1. 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/USA2P2438586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e53d9be8d06422d2c35703272e634dc77232e997fc8a7cf65f26f0d4262f837. 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/QM24S2307654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e53d9be8d06422d2c35703272e634dc77232e997fc8a7cf65f26f0d4262f837. 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/QM24S2307654.
DESI TRILL Presents...Brown is Everywhere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9637b58960851a543fb6b344081018ad85e055b93cc0626d663f5b0bd0cedc. 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/USA2P2418967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a199ce98994ac6d0fb0327d2f7f6f903dae57bdf049c480a7c16df3fb32b865. 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/USA2P2438583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb1c19c76fb655f7a4d1dc008d26ae73aac28fa8dce2a4f587a86ae8e781402. 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/TCAHJ2337782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d52b3c65b61f774fe25ef2da287b56a5df94db9d9deac7fcb05eb6b7795302. 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/QZHNC2313983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7904d50d4db9838967c088b597bb952e64ea00fe753a4d2bccbd046fdb6101f. 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/USA2P2438582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d0ebc9abb88d70c6bf8c8c3febbcf75fb76cedb44e71f0b95b0359178e49c1. 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/USA2P2438586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce68e7a9edd003118c2b64d4b8f2d65237a338340f8d18ed79b7ccc05c092a5d. 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/USA2P2438584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862c41ef949e92a25647a4a44f19f2dfa4fa264d16f94890ffd6428e25400db. 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/USA2P2438585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a199ce98994ac6d0fb0327d2f7f6f903dae57bdf049c480a7c16df3fb32b865. 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/USA2P2438583.
Tension Mat Le (feat. Mumzy Stranger & DJ LYAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b65a809cc81fa71682f64fde35d9b5d40ab9433a1d5205d32c7ee959636f9f. 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/USA2P2430041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1945b050ae387a71d23e07b8cc25f4e7beade6f4edeb6f170f1d5e7021cac4. 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/QMDA72412382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4893e9fbd54b854aa2653381cd219d304816427389ad4b10989a58e6a2787f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCAHT2465651.
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