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 0x3f37003f77f716d9311e2c4c0a993c37643c63ea87eee23aae1c96fa52b13b70. 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/a1a20ca2-59cc-4d37-a807-b894b5a00484.json and https://artists.proofprofile.net/proofs/artist/a1a20ca2-59cc-4d37-a807-b894b5a00484.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 0xb4571cfb1a64ccea8eabd71902e5249c427ded0e3b226f5e9a0cb0d9529efbf8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLC050200690.
Hardcore To Da Bone - Oldschool Terrorist Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcde655d1d3191f4b78fb96719e9f509ce5a022c4efc30a452d6f80ff2f68df. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/NLC050200692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b49ddf7010fcf8680ade5110d0223954c7ed08954960675dab21237d89146c. 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/NLC050000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fdae922edca332b51287585656758b27f52eb77c77025eee04641a603c1e78. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/NLC050700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb4170351f249dbc216ee9eae68bd1ef9ec9085211abd323ee761727cab8952. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/NLC050200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac1a4c6b1e67daa7d9b8540868fac7344a993e297781c8fb55d1e2ea9c59ae7. 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/NLC050000048.
Rocking With The Best (Degos & Re-Done Remix) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3a385333dc3004aa3168eb55467dade1cc836f40b7d7768d421dc64f4d62a3. 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/NLS241202435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653902d142d8b66258a9d40e38b60a905ad3eddd031f73976e2e8fe8e88ed164. 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/NLS241202451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95440d2765644d8472ee6dbf28a02787ee929f1cc2325e9fe869f224977f43d. 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/NLS241202437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415054e8fd98d2714c0d7cda57b6f9343f6330c8a98f3d01a936a85f7cd694cd. 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/NLS241202467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161486522dec6688e3ecc64540effd33fcd33adbb886ed1830b379222f956891. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLC050800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161486522dec6688e3ecc64540effd33fcd33adbb886ed1830b379222f956891. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLC050800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23f732cfefae4d8adcd520ce15a9d678c1ed50520a27a54a2051e5cd778727. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/NLC050800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d68f360b4343cea4b59641aa9d40bef4626e9053993f63128bc4e4b93ad9ac. 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/NLC050700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaa4656329a2d21cd854a6ffc9b6561609e6ba5841231fcca392b4276116a2a. 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/NLC050800163.
Hardcore To Da Bone - N-Vitral Remix Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9214478ee555c2545e248fdb9bfede2b9caca5015ccf12d8e5a5d24cf703dee1. 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/NLS241800347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af6fcaf491471d0d4c263cb8815181b45a0a70af080009cb876bfea57d7a43d. 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/NLC050200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9214478ee555c2545e248fdb9bfede2b9caca5015ccf12d8e5a5d24cf703dee1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLS241800347.