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 0xfbbca5cb7e43104728ed92c43773b00dcfb35ce90f9e8184f08d340ed6612ec8. 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/dddf1ac8-383b-48ed-9025-f1972b379805.json and https://artists.proofprofile.net/proofs/artist/dddf1ac8-383b-48ed-9025-f1972b379805.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 0x0014b07411bc3d72a7704564f8084172f34a62e6f4d6d8d0a70b076ca355ffb9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRNAR2318412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce32653bf03fe55fcc622494fbd3a70192a94a90f2e51d3387ce66b644c5eaf. 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/KRNAR2318413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32aae52100dc9e4b0e0c03b035e8d314bc794beeeebed7b4bda86e2e2627f023. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRNAR2318414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d1124d4cf25ef2d367cbf016af294038923336b0ac6d3943adcb244d62befd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRMIM2339978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca6253850233385f846293e0423420e1eb85288f43ca938a3934c1293035a07. 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/KRMIM2339979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af3f9e1c6d807acd74728464fb931764a92ef9577e1ac8bb0dbe45f54fae4bc. 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/KRMIM2339980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b3d0b1310b458c5daddb389f5b7eb6b292ee474269c4d583b74115b60c2dfb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRMIM2339981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023d53c111a90d2fd7175639d87c7e4da33671e35f0fa21c83716c75f5885862. 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/KRMIM2339982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28f6f664b82590144d164f8c2ba040db3fa227708d4328f0cd4621df29d7ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRNAR2203899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222bd5c0114965ed08f3b9a730abdfd93fce4faa61912bfab8dccbbf332d6cb7. 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/KRNAR2203900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4703ec74a7b0272f45a63e0f787491a6109d8702e83e919f746c6d31b54bd5d0. 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/KRNAR2203901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181be734a19130aaf6ecf325dacfdddab918da65289eae36508d5889bfc0a2cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRNAR2203902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c39ff599731e28a072668874ce0f2665977473584a65ab790c4b122b0cd5941. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRMIM2441217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3873e3fd86c879cd7b63878e970a56695818f8c2e4f27c3572c6cf9b12825911. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRMIM2441218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fdcee274496dae6a675afed4eff2980ae6ccf0f5d6930220a7af083dd05c08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRMIM2441219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1810b320361386cb5414847062b551637c2d50b924c31789b0b082d25a6bf2aa. 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/KRMIM2441220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f1dc76668d25b4b3af5c3900f692b7c47a4d2fe5fd48f079337a5fd7883e64. 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/KRMIM2441221.