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 0x66fd3b4064d8c459d57946fff6e70d630d42f53e500d45a619fc510dd8762033. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ce15b2b-dcba-456f-b207-8d7c0b8b02ce.json and https://artists.proofprofile.net/proofs/artist/0ce15b2b-dcba-456f-b207-8d7c0b8b02ce.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 0x10edeb2a19a1ff01308236636389ba70944755530bf15f32e0966f5b0763508a. 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/BRI9C2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7636d45893aeb11e1ea1358c90503bee00a99c6b49a202eb8c775e2599f8cae0. 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/BRI9C2200071.
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 0x153719584928a93d06d2160ec2a9b7a4d15e6038cb7121458de0bc32c05f84db. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRI9C2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9403b0677e4f237073ac988351874eb653d62ed0783ff09a14176ae50a829f9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRI9C2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eadd878ea88ba5f21bd77d17a638d1b7986b7c6fc6f3fd9e88ad811e864053. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRI9C2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb77d9eb71b8ec75e4fa5d7f34b7b6668fab6c10d8d62927eec62ae78240c6e6. 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/NLRD52200299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d56563fbb657de9aa730a6226db8231ddbebae1e07af9331b6465a68af4836. 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/NLRD52216853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac195aa3cbccb3b7fec335af64ed81d9ac666018ec64ca6afe0e7404c71466d5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:02:39Z), 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/NLRD52216856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550e4b42e4e7953d9cac6e67e378454352a36be2a717466167efc02170fcc0d3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/NLRD52216849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0758e35c7bd6f645f445d748e74c9a58d5b97016b0e0787a16acf0ee7501de1. 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/US7VG1860452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaedc93527a8ae7155c63e60725f9d8a41abc253f123e172c82dcbeab657b86. 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/BR03D1801534.
História do Rap Nacional - Menor Abandonado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a4a684496643ee6c150a278c97be43a08b8c5e1b5804b5a2f484e2611e59cb. 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/NLRD52216859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c17322ce132280fd23ff31bb63e7fb90c8f59392014cd5d39e38d910fbe240. 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/BCWXX2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c0e0b3a019b8d556da05da91d6a4ea2f213759cd7107175de8f2a9590ecb7. 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/BRI9C2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f12bdf46a47a7a89918ec2a0c0189b53dba0d71ebcab199d74d8ca70e243b9. 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/BR03D1802069.