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 0x9459c46ec926b183cf47ddf43729a3c320746fdbbfd46cf7b43e16cfb3596579. 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/b56d33ef-2466-4774-a90c-4d973533ba2e.json and https://artists.proofprofile.net/proofs/artist/b56d33ef-2466-4774-a90c-4d973533ba2e.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 0x1ff6bdb9f7422a8d3db063c6a5fa72631373250839a714fce09851756c4e145f. 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/NO2DY2300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45c76deb5c2877cdd6108899fd66c8a895c0ac5bebbf509f029cedcbe77b5b4. 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/NO2DY2400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e959275aebc808dabbacf97a015e52da4ac494ce32bd332e0e91984903179. 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/NO2DY2400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499d3f3341f0e5f35df48b941e9fefe65f3da56c550081a165bf45976ff817f0. 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/NO2DY2300584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae8212cd50782af222b264c7446d3f4e374c43db36d80948b0d1b4c0c99516. 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/NO2DY2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a018f9ec8b210b329711048d46c9030325c80c9fea2a146f2c038012c2b2141. 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/NO2DY2400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6ff7f2fbc1c2ef86e258f3b946f25effd1d596b001227883d750eb3b3e4f75. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NO2DY2400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4607e3373d8329ef4661ca29262ea39575e09dd14832ddc664e43a4520b4c9f4. 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/NO2DY2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca2599d0191cc4b27cd063eee5ba880a9c6f569b50b189b625f1931cfea637. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NO2DY2400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a018f9ec8b210b329711048d46c9030325c80c9fea2a146f2c038012c2b2141. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NO2DY2400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae8212cd50782af222b264c7446d3f4e374c43db36d80948b0d1b4c0c99516. 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/NO2DY2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4607e3373d8329ef4661ca29262ea39575e09dd14832ddc664e43a4520b4c9f4. 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/NO2DY2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d1ed75fc0ffcf9096cf3589ce11670d4c4817c4d8bb1b013eadccaf6fca182. 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/NO2DY2300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff6bdb9f7422a8d3db063c6a5fa72631373250839a714fce09851756c4e145f. 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/NO2DY2300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac5efe31edbee2a5b41d48f4108514f15156b317eb5de76d2a07a5d20621114. 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/NO2DY2300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f7a63bb06fd80b7f0f89d544b1cab0bff548405475af45e46c9089c171aeae. 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/NOEH02201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b94676651a6f19335020a60ddf034c90fe03cabf28ec196a3669c0d1df5734. 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/NOEH02103010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83357eb43b8adcaa66fce8c5f56f5c5d4e0d56df2b726ef26090ab85d55b24f. 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/NOEH02102010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc49750fede150837b7ef41269dbc85dade75d07e14917fabf9198c70a4a651. 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/NOEH02101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf261a902fd54400527a60ed163d784063780c452eed166af7b85bcefe4f98b2c. 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/NOEH02003010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c894f643108926824171651274fa00589d04c060b59a509d5455fd107c41fd. 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/NOEH02002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b354e4b6de2cd92da3d9672226609558418f1ef699d81a0fd61d067af1c1669. 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/NOEH02001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7931490ed64be09ea0747b6fde9ca4390972b3bf9dd720fbff754814d2b4f448. 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/NOEH01902010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431c17723379df5e156040f4dc92afe3e7a8d7d867ffcabb8ef79cfc3e160f9. 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/NOEH01902020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25997cb0e98be12da59b4c12925058158331e1f7021ebc54d1d75ad724e9c199. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOEH01902030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d29aa81ad31e8721b464c8de6f3fce011b99b01e56cde1007e4ca6e166a9803. 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/NOEH01901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad4e918ca0cbf7e1ec21f9effcf04c50ace04bda4615eb559ce332e34fe45f. 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/NOEH01902050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d29aa81ad31e8721b464c8de6f3fce011b99b01e56cde1007e4ca6e166a9803. 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/NOEH01901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca215f11f282cfe3cd2f9bc96aba9e154b3109f59453b9a0541f76c5263a2a7a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOCWZ1805264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1950926e386c8a6450d08c930c9ca8f30006c2ede2e5ca8fedc15f191217bb52. 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/GB5EA1704245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce99c1fbe23568cc16f0f653218f9a1ba021826440c85721beed330637fa47af. 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/GB5EA1700989.