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 0x9108d71bc2d61a6ddb95292d70f04fccdd474b3be44d5f2534005f2328dd6fb2. 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/93e49d81-2a36-4d54-8280-d9458aefa7b1.json and https://artists.proofprofile.net/proofs/artist/93e49d81-2a36-4d54-8280-d9458aefa7b1.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 0xf9e145f81b951f20fae65c0d8302571d9700bb9bb6c9c0c5281ffa21fda437a3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBMA21873396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf4146b40ca9d66ba0342bfc33940c2f3550e003fd291127f2dc72a0166debe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA21873544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4294fd1af5a29d2893256f62aeee72129992351b96f123cb1080ffd48e5104. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA21873814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a16622c40579d2afb0f2dfa04415589030ba249653f8b1e15db185a7c862027. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA21874187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4cd53a5820f7339e2ffb4820ae9b4955391bfb8dbdd83f98ce64c9a75c2bb6. 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/FR59R2144814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00141e70a7089982ef72bce8222bb9cf30445a99588fb8db0653da64473d134. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZDA42269956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a550773903e7f811c9e8cdd4be6789bc2d5699972ddc50b8a59c6cc78baa643. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INS402200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1254cf54e4d6434b8813f357b62aae62d779bebef8b20574b05061e5501ce97d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INSD11901167.
Nazarya Ch Yaar (From "Gods Child With Pen")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7bd89f201657878bf19ab56f9b2af79880c4aa2fd2689b56593e9af5165f31. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DGA072316551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a4f06c12e236f65f101c9bb811d14844347559a0100206c7d84d3988078e7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0P2336591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf95970e262defbd5019084c63cd2fc3ea092de3ae6a077ed1ab2589c321524e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZFYY2424960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58abfd098c4dd18d2cfae51a76f4be39bb6412bb68e23f9efbbab877d1b08b4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FRX762400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d901b8183d671223ac9c12d94f3551fc46b45d80736dd88cb24cdbad91bde26. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX762400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d50d5726e21cdefed0ec73ac27d73eec251ed75d4f422816e659cc36a0b52. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INE182449513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23819030b46b86afecd9979175b8e62776737ffd3b3d6e16fbda1a6c1430954a. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/INSD11900377.