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 0xb22775122b3644677b36a052da83858871fea2c939375200b64160c845382782. 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/cf207b9f-5e47-44f3-b164-51f684fbd83e.json and https://artists.proofprofile.net/proofs/artist/cf207b9f-5e47-44f3-b164-51f684fbd83e.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 0xca2b5dcbba42ec11962dd17b9d7eddc01af312385efb4353eda0030441377631. 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/CZH241000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131e64238ca2b73e0d450e587ab31ca74c8b5532f9255c1e2cc3d98350aabfe. 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/CZH241000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026108dec7db6516a4c9e978fcc646038d445e2a8bf86d50381796d102ccf1af. 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/CZH241000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f462048627a83d0c714fcad56f11d07570577b6fa20d8f56a805662594f5114. 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/CZH241000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc7f9e103b01c88bbb6f2320862d6d693963e08021d3b424f14524b3dea065c. 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/CZH241000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d3610fe90c8faef473cd422cfa714f7344422765c482ce7254a67288a1cd4. 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/CZH241000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f739119e418390c8aef1c2865d581fbbb4cf3559ae8fa8c499c2dece04186f9. 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/CZH241000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f88a1f706754e0842339b93086deac0ec65e0671ac19cf2a5b264277726d364. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CZH241000003.
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 0x137ec0605c6d4ab08a389f6d550455b9ee15e5a29c8482f7961e2352a69cdabf. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CZH241000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4756f2817cf2ddaeadf22708d20726aa706d0734abbcd19ea08d3acb2c3d0a8e. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/CZH241000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14162190da53f3a06644ccf7547806f53aaacb2bec70939fef878ebafe0e5d16. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CZH241000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a811cb306419fdcef856d66feb9d4df396e19f6c94480c7e2be4db297bce75a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZH241100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f48f098d8d1d6b959baf8578bdf76eb4c43c08dee9d031e2639e4f1c70102. 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/CZH241200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb424f4b079e9b941c6b86bec4ece435edc3d777a9e4b5249e972a50343b73256. 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/CZH241200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ba4c62570fb9bc82d7a8681a90bb019157f801177a3152e9014e6747a5edd7. 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/CZH241200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1555449902300017ce4c9d04395c9e1a8679163c8c0dfedca72e364704d6eabf. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CZH241200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d695512cbff04820eb63dffbddf62bdce745881d70613908aa4e02139b6ac08. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZH241300013.
No Stoppin (Sandro Purple Green Remix) [feat. Jay-Roc]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab200d5a0b94265520fe1f9a88bcad8fdecd47905653efc71a2a9764bceb5c12. 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/CZH241600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a4d0fc7764b9d11daccbf053378ea71ba9c53b997368c28d3a0091ca670b59. 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/CZH241600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f5426226f49262033b9b8cb6e217eee59326b5c038468bda4b9d20784153d3. 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/CZH241600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d558e9b789a21564e6f75e4513462ad880f4812161d3a206720f173f7c35fa1. 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/CZH241600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea870b482d639ee8a5ea46e08cbfeb301fb3e8d4df1e99edcd1dd20538a26fb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZH241600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf966d61e484a7d795c75b9362eb60fcb3522ffefc8e05c9af75995d68a3bbf6a. 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/CZH241600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12df8fd3b3b6ae6f2efa3050bcece34be5756b4ef3748df14b21b25ad05881e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CZH241600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9769c7f8d27926404913ed8b9f923e4bb57cfd6a339b57eed0401594198367d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CZH241600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91656352d14bc52bbfea61c738e41178b74eaed85c0fd74e2e95837c44800034. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CZH241600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c7b474f796488f92be99405bce7e96c38c0b89947d5551944d99d228c1b403. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CZH241600011.
Mikulášská s The Tap Tap 2016 Forum Karlín (Live)