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 0x56cfdd6d152e7b69dc3ddf6d53ec1f2de607934ebce63b5b7290289d789711d6. 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/70f8367b-c3d3-4f28-9e6c-ce7d3ca77494.json and https://artists.proofprofile.net/proofs/artist/70f8367b-c3d3-4f28-9e6c-ce7d3ca77494.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 0x494f808866a5b640a940b173c6e34a83a0df648bf5e7f50a6459327917d7b5df. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BXIK41900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2806345210205d724a780b4af89d339b788bb8de8cedb2df86cac59f2061b2. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BXIK42000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d16c3d8fca10b61b847868cfa854605c31ba1b47081630197d8efdc8b6594. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:17Z), 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/QZHZ52262310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd56fdb18d67d4ee7b8b95fb9fd6813ec402544ece712b0f2c221629b99caf. 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/BXIK42200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b633d451d8ee3cfd063adf13c3df388fca526fa469e2bff92510d4e28af1a5d. 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/BXG6R2300616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b528b4fdcb0294b509179da9d277ad1cba25eeb642a93dbc3a8af90d6903ea3. 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/BXG6R2300761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50eed5d07b171f165ede4f55a310313d3577274368a7431e416f1d4bf538585. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:53Z), 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/BXG6R2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04757a682fe16f61f6ebfaa90040569816a0d619b896a196377ff3ec1b977f2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXG6R2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6604d044b04fc85eda2d290474103e5fd8cffdb953ca3a8774240a3a0d57f1. 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/BXG6R2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cad823a012586fd15f7a0bec4582f4a0ea0085c25ca019ef5fb4e381f6e1c00. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BXG6R2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40cabb117564e0ccfb37d37bc75080c14f91cd1a69f3aca71ffdcc997552084. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:58:08Z), 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/BXG6R2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b402f178627c710df7c542d438a0fa7dea8bbc45fcabb8f14e9d02c8a6ceecd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BXG6R2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaca5a476fb012e09ffb02669c130af27df08346047f97ad2dc9e5c4e035c0f8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BXG6R2301095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48da2e32e2d8fe8bcdecc74652408790ffb386b3aac6293f8e394932c7e2a4d. 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/BXG6R2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e9c6f92fa99fa3a8fbc3fe95f65ebf352e959156e0cd9cc76f45ffeab4bb6c. 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/BXG6R2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd077a037582d0888bb78b810d820bbdfeff0f62c489ce47d3137765827ce7507. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BXG6R2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd3a32afdf34ffdf3fbdf0462c9bd7e429c83da59fa4b7b52cd51ca90bca090. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BXG6R2400689.
Set Do Kauan 2.0 (feat. Mc Kadu, Perera DJ, MC Ryan SP & Lucas Kautry)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bea1c17d8ad4c008db924f017cb523b8d6eca76db3eaf5eee28828335a92b2. 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/BXG6R2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1459d8da9430d7bc35eb916aa8fc711e32a0da93faa7afa756e50ce1b0b5df37. 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/BXG6R2300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1459d8da9430d7bc35eb916aa8fc711e32a0da93faa7afa756e50ce1b0b5df37. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXG6R2300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7597eecc561033101f11cf97bea10f89407d7c52e42b8260c39fb1897eb0e24c. 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/QZNJY2335806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f751ab7d8d8559ab6be2f48cf9dfea2ca135a2a367f27000392372694f7bd8a. 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/BKF5C2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb92e131bc763c2ba7044ef9b828c07300a9a5012f36490ddad588de6040bc. 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/BXG6R2400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1cf7dcc0a20cb9e7ca73e3a36b39803a0a2dd8e4669bf200e6e8af8907269a. 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/BXG6R2400367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff2342f61f667912787c0f3c26bdc3f8e6b840593e14594fdb7e9ef50906506. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZMZ92176655.
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