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 0x8ec20b10315ef834e834f7b7fcddb570bf334cfdcc9bc1379385e9b411e9996b. 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/f5487ac2-b0eb-4c5a-b102-804b4f2d1a17.json and https://artists.proofprofile.net/proofs/artist/f5487ac2-b0eb-4c5a-b102-804b4f2d1a17.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 0x325543765ef7a3ce708f75151eed128aa228c1ef3b464b5733ff0463c9cb88d7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:25Z), 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/QMFME1350224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84f2e228e536d7f8f7c92a264f8785c375f728349d3eb34aa7fae197b891361. 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/QMFME1350226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9245fbf31982dc308a5c97f16029b526e0679529d1cf09a625c10432d1d318f3. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QMFME1350227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a77c944e202137df3fe93799025a71838bc6af3988ac44f5eac633865777b0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMFME1350228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6890231a4e51a87c0ecd57df291c95fe43b44bc43d25bc11c941983a349c5a55. 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/QMFME1350229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0fd7e90a85d8333215a259a862d5b79ecdbbdf41558c111a891f163078384. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFME1350230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bd15383cf4a6379e01b067bdb374cd00b61fb1c58e9ce1b69685c6678a0743. 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/QMFME1350232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33d6cef8bd4b25df92bb025bcbe98af1c2686701e2391eff9179a20459afb96. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:37:35Z), 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/QMFME1350233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1f5f3f1a26eee395b711e897232f83c887e8ecc4e29db31bce754808b1339. 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/QMFME1350234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4102054b415a3e80586abaa87e528ec96b962a4fd011d83fefea322124955f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME1350235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0777d35073ebe30a7e88e642d042fcf95dc102f38b264ef052a2324a9773705. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:26Z), 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/QMFME1350236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd57a404d2b5d74ce2f5f1a6fb41d58f639d7e529c629038ebcfb80c6526e83. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:18Z), 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/QMFME1350237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47135a193df0755df8372b63566708944bcb3e1f2dd89679f071522aaa8bd7d2. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QMFME1350238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a5db7cb3f14f5b03c31aa7b39cf0c3bd75e7e8022e87bd1dc8e37e24b4e4f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:30Z), 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/QMFME1350239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114aad6e738f1de786ba46f819674268d2eda45990a8d64c188d99316d5ece74. 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/QMFME1350240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be39131680ca3fd09275af0d010f70941434a4812a645ea01aa6db90b8c5823. 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/QMFME1350241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc078307c8140fcdca96be4827514736711bb575b43d4e820f59235651a0d18d7. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:54:45Z), 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/QMFME1350242.