A lockdown () is a restriction policy for people, community or a country to stay where they are, usually due to specific risks that could possibly harm the people if they move and interact freely. Th
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 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 0x6e00648daecb2fd3dee63882de199ab5fa1a0f327b699450eca4e6a95d34a1e4. 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/d4aecefe-09c7-42fc-a843-5bf74dee06f4.json and https://artists.proofprofile.net/proofs/artist/d4aecefe-09c7-42fc-a843-5bf74dee06f4.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 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 0xc552419af94ec514d67a384f5dbd9164ead0976966ec3ac78cac6da1afa5e7b1. 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/BEKO62100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da01b63651445f5cc9af714be685b03d3526a55bd87f9182d1376b3910aea14. 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/FRR642300281.
Timmy Trumpet's SINPHONY No. 1 (Extended Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdd0715894215490740dc133736c54270ed8936e2d73df476b820a54a0e9fc3. 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/NLZ542301404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9eabeb87943345590316c0fcb1a8a96e99177f5e281c4b391058cb1e7c6ac7. 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/AUXN22091601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ec3e65fb63f540e03932706b587b2bb0b13db2b71079782e91c61de63b837. 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/NLQ8D2300413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df444565451c8d6eeca89a0b327c14ac2f9a96108a899ef15a10ad68b3df792. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLQ8D2300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1eccabb3c35d09917245bbe3835161b41f074b7939ae079f16ef3c704b3a8e. 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/NLZ8W2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7195971ba9af587da323fff369aaa5027df651f4b096412cc7aef480fc2870e6. 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/NLZ542400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e6482b4a153916763c04f030380ed0b2d65d8fc3f90862539f123c1ad6fd48. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLZ542301361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aad128e5127cc3284fc122e20a34ecc731cdcdba9d2bde769292f1f2413152. 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/NLZ542201995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5999b9cbba49210f6c8926779e29821815b37200784cbab5d21d3caaf4c8ea. 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/NLQ8D2200915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fb148a096a64da9ad9b5724670f92953a64776ee4d81afe5a8abc0634e82ca. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BEIW12300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe290afba76a6cfa3bd320f21b18270adf44085e92edb05dc19eae59b5df127e9. 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/QZ5FN2042200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd36e618030b6b7a81e542820f20766352a1d8d8c8693df1ec065f3c83a7f75b. 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/BEIW12300341.
Majesty of Hardstyle - The Very Best in Hands Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab99b3130a40197a75221be1d2791c5e3a3cd201c187b0b1d4dba6b67c8aeb45. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLDD62300179.