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 0x21fa633d40aca45ca61c92885e5a55d6885b1d9baa5543ec5d3716e5f55290b5. 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/a0326835-4664-4f49-9d8b-a6737b4532bc.json and https://artists.proofprofile.net/proofs/artist/a0326835-4664-4f49-9d8b-a6737b4532bc.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 0x365d5f994528b68201a2c1624f476d687e0697e256a60e8aa70e6fcc37f63d3e. 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/ITAD81900019.
Deep House Lounge, Vol. 3 (Chillout Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d87665d8ac5be3844255c89c968b78304eaeac2b01f70eda935cb7c996e912. 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/ITAD81800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d5f994528b68201a2c1624f476d687e0697e256a60e8aa70e6fcc37f63d3e. 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/ITAD81900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea3d0d6cca95bae75c8b9430bd468c1a70a3d5e27c6b06e53c770a0f1ad709. 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/ITAD81700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d87665d8ac5be3844255c89c968b78304eaeac2b01f70eda935cb7c996e912. 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/ITAD81800140.
House Relax, Vol. 2 (Deep and Chill Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea3d0d6cca95bae75c8b9430bd468c1a70a3d5e27c6b06e53c770a0f1ad709. 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/ITAD81700059.
House Relax, Vol. 7 (World No China) [Deep and Chill Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee3641f69f0026245e33de9b83d262979a5838a234232b4d8e7f291fb402289. 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/ITAD82000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea3d0d6cca95bae75c8b9430bd468c1a70a3d5e27c6b06e53c770a0f1ad709. 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/ITAD81700059.
Why Does My Heart Feel so Bad - Tripnotic Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce7cd292dd3298190dc555c7334117d068fae7841f44ee9879f7b28ee007c21. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ITAD81700089.
Deep House Vibes, Vol. 5 (Chillout Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9d16fe455806ac094d742e5a5df241cdb73f7287c0cd83e78941c98fae9e6. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ITAD81900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea3d0d6cca95bae75c8b9430bd468c1a70a3d5e27c6b06e53c770a0f1ad709. 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/ITAD81700059.
Feeling Deep, Vol. 2 (Best of Vocal Deep House - Chillout Set)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee3641f69f0026245e33de9b83d262979a5838a234232b4d8e7f291fb402289. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITAD82000052.
House Is More Than Just a Feel - Funkyfied Mix
Saint Tropez Beach House (Essential Summer Grooves from the Coolest Bars & Clubs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6b63da0a74b9d3131ec37d7d7867c136664a47bec1f8d79535523576aca3a5. 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/ITAD81401539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d5f994528b68201a2c1624f476d687e0697e256a60e8aa70e6fcc37f63d3e. 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/ITAD81900019.
House Relax, Vol. 10 (Sunset Deep Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7fcf389bcdc7875d96156172b7c25369c0edd252e60b3c8cfc5fedfe4e82db. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ITAD81700113.
Deep House Club, Vol. 3 (Chill Out Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7fcf389bcdc7875d96156172b7c25369c0edd252e60b3c8cfc5fedfe4e82db. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITAD81700113.