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 0x5199e3746fabc79e3dfa9260fd6bf7faffdf9dd9f6dbe01fa49c4dd25e1b4177. 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/c6315b38-fb95-4859-bfb7-47fb7228f686.json and https://artists.proofprofile.net/proofs/artist/c6315b38-fb95-4859-bfb7-47fb7228f686.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 0x5c0d26ace6d02e7b353f4c12289ac7464cafd32641acf8d529a082fee8099542. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK1811146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d47747938e4d23b60de96534087d3481de000161806a39593cc3d800da8bd2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEYOK1811148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d488e84eb0cd32da908e0296c3a445883c69e2aee72d5ebc43fcd769d2bca07. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SEYOK1811147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa8f4f450dbfba64f0ed99a376f82cce938082e9eb60ce66c72a7ca8007e20c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAEH1996651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9da84d334bb850e33e73d2818f7fd02dc6b9559fcefa8a709e5929d80806d58. 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/TCAEC1958198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c237e42e8d492278d52d1ebefbb2b3a09fb33d1affa96d30cab1e4baf5ad774. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:20Z), 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/TCAEC1958180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753ae299e1526e36b6c251f985be76e0aedfa314ef7fab8925d810421fbc1ca5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:09Z), 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/TCAEC1958190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3781360dfd0c5f2af0f8b2d47392a8694f9d70e3ec71f1d4a38a0870a0cc87. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZFYX2366030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0e49966f982fe5079210da5f1094009505adffb72c658caffdf13134896e3. 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/QM2PV1869050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6463588747f4833a440ff92b322bd09e2e08038a7a740e9d0542e1046d0f3654. 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/QZDA81819675.