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 0xabfc461aa2733bd58f500a50a264a12779841333bae110a154737ea66aa32a70. 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/cdf315ee-a1bd-4177-9deb-ae43d0cc609f.json and https://artists.proofprofile.net/proofs/artist/cdf315ee-a1bd-4177-9deb-ae43d0cc609f.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 0xe6b9fb836e9bc84ee8d9a0d3f7a0428f514518dec26d46d766c3e0c78a7e3faa. 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/GBBZH1391813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd671d64510cbc88240c7f89eba6ed5c8735b4aa27439602a4de0d4c7d11591. 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/GBDLM1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe018ed7e09411a1cc4c943b5b6dbc44cab9a493b890223bf8117205632b206. 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/GBDLM1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43cb35e374afa3870c51ac2ed7b95fd2d7f38b6e01d57241babd4b6741ab0f2. 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/GBDLM1300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daabeeb2bd1f968ed03f583748e7ff04744a9e02b19bb2fd3abd68ff0ec60fb. 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/GB2LD2210114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696374c19082b1b41b0403428058f8c85aa249d6ef9a4c6bff73aa868b4c350. 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/GBBZH1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2217469444ffaed10dfaf0f8efbd9aa172d8275666de900ed251eedf1e334187. 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/GBBZH1400029.
Infinity (feat. ILIRA, iiola & Tom Cane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a32e66acbeea61df526b07d18699681f53f62bbfcacf9b2605ac3fa1e4fbb. 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/GB5KW2300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a32e66acbeea61df526b07d18699681f53f62bbfcacf9b2605ac3fa1e4fbb. 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/GB5KW2300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4edc616f2c1b973a756c26e16907de7d3f6eb07e04c97d6e278d559bd709b0. 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/GB5KW2300477.
Sun In Your Eyes [Mix Cut] - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114f81530df536199fc11d1e0a185a7cc250c09a242dd15b86765d3646198206. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLS241402149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e2dfea07135278cce2a69414c3c69331a25ad49fc2d00ea155014685e01c8. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBTMZ2401224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e2dfea07135278cce2a69414c3c69331a25ad49fc2d00ea155014685e01c8. 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/GBTMZ2401224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e2dfea07135278cce2a69414c3c69331a25ad49fc2d00ea155014685e01c8. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBTMZ2401224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e2dfea07135278cce2a69414c3c69331a25ad49fc2d00ea155014685e01c8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBTMZ2401224.