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 0x9417e90ba230d51fbff24bd299bbd4c7a8c7ee1e2e87466b93eade4557c69a0b. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd308845-0244-433d-ae31-5be429b3bfcd.json and https://artists.proofprofile.net/proofs/artist/bd308845-0244-433d-ae31-5be429b3bfcd.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 0x0b3f8be9fab88751b78572bfe7ca19d1c31e360f54842bfa010bb193baaede20. 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/GX53U2311226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa697ace3ab7014649d69c77b39f6624407acf17211f8b2c03708e9f72c2dc747. 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/IELOI2232727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143edf887f9c45b3aeca671d4f48ab4d59a2dfca8abb6308bd2cbc19c0b4a98d. 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/GX53U2311227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cff2554356766898c0e1613cd3a9850b094a927b8a88a1ec3bfe48915535993. 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/GX53U2311228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3355d2c3f3c6899493ac6539619b347e9e598fec828927534b658848a571ffd4. 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/GX53U2311229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc6789eb82b262a0ff037f661f5a57637959ac1abf894c506812bc5ece30c96. 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/GX53U2311230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedde654af724cb4e35958152c7209486de388235f083082e8f079639daad0008. 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/GX53U2311231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96328dc30915654327c652f8f9c38c56c7c3c0c39e84f91b638f3507acd6fbf. 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/GBMA22483740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa554e80bcbca8cac0fd30a49d1121d6fc0b102564f721be5a9115a1f66513cd9. 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/GX53U2311232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3222f278ec5f2afb26054bedb4eb8f8e05f193f68831e18a3508c2711f12e99. 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/GX53U2311233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c45a00031d7f482e1efb9e0a256620eac5231c6efb9df153083651f87707eba. 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/GX53U2311234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868633f52ec8f48354d6fea8ff6643654907ee17d6c06475961bdaafbdfe25a3. 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/GX53U2311235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203ccbb8f00c4fba2b23eab3501523f1e85ebcd20ed10f0302c3095cc1336d42. 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/GX53U2311236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359c8ca5565d14eb051adfac04a8215a3abaa5aa69b766eeaf41860f276a2a58. 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/GX53U2311237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e33b272915e6527b5938cf4c2e05408c6545a9b28df4d2948dfe7016acdc64a. 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/GX53U2311238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f59d8998ef4dfc8393445285d9a33b49a257e7fee1aa457aa577de86ec34523. 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/GX53U2311239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa67447461fc2e479c0463a8288b47551d5e5bf44890905db12338b25f234e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHAF2562725.