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 0x9eeb03d9b2062dea81e5ba68fac71b8e75c7ff9b884128dd29c56f311381c827. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20b1f75c-1143-4f3a-bb12-54e374553cf9.json and https://artists.proofprofile.net/proofs/artist/20b1f75c-1143-4f3a-bb12-54e374553cf9.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 0xba18d667d493e3a59250e1cc7f68903134d53a27bb31e637fb9108e6f31838f8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITAD82100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40ddf61ca8854e6a8531d8fb278729fce2a8c655acc1ced085029515608d18f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITAD82200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9547ace8420a13a440b1dd3b32e6aed676fb26f461aa392dd954d15a6b7a6620. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/ITAD82500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5316fb1c9db03780b3b664229321821cafaef5321da51619a9eb6c9d6cacab32. 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/ITAD81700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670cc52c5d59042005fe777e08feb1a1559fb3c071539f0677c42f6783a29604. 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/FR6V81768319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaa0d38580dffbefe1ee13e7dd0719f123fd09c3052161301ddd1eeabb06129. 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/ITAD81500221.
Sunset Chic, Vol. 2 (Deep & Cool House Music Vibes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63aa823d6b12e0aec147115763d67d11f01f2bd270d3c83ff3007a3f5c1622. 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/ITAD81700006.
Deep House Vibes (New & Best Essential Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c20c51bbbb1c3ae5859b73097791c90e41b06ff40e0e8625f26f6b00aca492a. 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/ITAD81600035.
It Feels so Good - Highpass Reshuffle Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a262a8924f6bb5e1f3c049786a58350ea32f7be59cf44531df60ed9d327030. 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/ITAD81700005.
House Addicted (The Best of House and Nu Disco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaa0d38580dffbefe1ee13e7dd0719f123fd09c3052161301ddd1eeabb06129. 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/ITAD81500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c30eb7052dafc69497dab219ae8d38536894045c67601dbac9faeffa805d21. 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/ITAD81800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd9f1bb624547bbe41c7dca3ab712cdacd8014aaef3fb07534938fc00f0a290. 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/ITAD81800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c30eb7052dafc69497dab219ae8d38536894045c67601dbac9faeffa805d21. 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/ITAD81800058.
Deep House Vibes, Vol. 5 (Chillout Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd9f1bb624547bbe41c7dca3ab712cdacd8014aaef3fb07534938fc00f0a290. 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/ITAD81800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba18d667d493e3a59250e1cc7f68903134d53a27bb31e637fb9108e6f31838f8. 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/ITAD82100105.