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 0x06f1a2016c22a878b40d22f9d6a4bce5b1f658d7e86145e06f0f5cd6451b00bd. 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/8be16c2c-a51d-4fe2-980e-d5fad79700b7.json and https://artists.proofprofile.net/proofs/artist/8be16c2c-a51d-4fe2-980e-d5fad79700b7.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 0x656f260f776d7cd329f33c583c233cfe248bed0d2e77c878f310b9f33d5c22b9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:23Z), 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/QZHN41967936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f525609705c1e14c216229ee19295762be3c472788220aac426f4a1e3e456c0. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/QZHN61948507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928519ade9fe27cfee712a023d63af22ab17c64650c45503641139422c149bd2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHN52070265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2992b57212fa5395c00d1133d9e53cb12e5cd04344377a98613493c68418792d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZJG52366554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf27ca58f4125536b53dbf42448bb79cec4e5f6aa5d914f92e80dd390a14a8f8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UK6KW2300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574b38bf284d604b852f7227c5600511c9e46a9d5cc690430562dd1c7053ea76. 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/UK6KW2300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4506a3837399113af96f6e33875a2ee1bc51cb9f9ca8d7d1f66f47d8981862. 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/UK6KW2200238.
Love Me 'Til You Leave Me (nowifi remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648769b3107a786b7200e0c0c7421fddcdf54e477eb6f31a782625370a6c7bc3. 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/CA5KR2358314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648769b3107a786b7200e0c0c7421fddcdf54e477eb6f31a782625370a6c7bc3. 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/CA5KR2358314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466ae2dd93bf4a5cae6315f4542bfd1fd42680433269e940d52ff17367e45b5d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJV2010136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2231efff4de4b837400e7d8960f3f73187eedc901a35cb0c39c89978ce646400. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES71955912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466ae2dd93bf4a5cae6315f4542bfd1fd42680433269e940d52ff17367e45b5d. 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/QZNJV2010136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f9d06fe2d2ffa2b87a6a6a695eb31637efb24d496c63cfb272040bd2a8c68. 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/GBEWA2307484.