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 0xbdf0dded863f5687be233d7cb1b9400a95dacc853d78d2841f86ba6c626edd63. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c322f2ca-e3fa-4465-9fc9-019a82c70a43.json and https://artists.proofprofile.net/proofs/artist/c322f2ca-e3fa-4465-9fc9-019a82c70a43.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 0xa45afdf26a99d2c0a457ff3ca96d05913d07272baafdece5ca6ddeb1bfc463cf. 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/USA2P2450272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad23e2ddbff155a1a19a8ba3c56e18dd4436b3f2d5000a2f750066f61c28663. 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/USA2P2437401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c354145e63353c1bb544f4be0f3ad404d2b2dffd0856a36f68d18d9789663f. 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/USA2P2423392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c43a0427a65dd70039ada19d1fc37c5f452155e7c648d2e217155cb2782a4c. 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/USA2P2437402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eb34b746dfa8c3bc2185d8e676f373c15cf5512db608ff731fd08c946429d1. 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/USA2P2437403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149b2325b49b1c477d267b0caefd33c26f7aa484a360d181e8b9d5c4c8d25061. 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/USA2P2437400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c354145e63353c1bb544f4be0f3ad404d2b2dffd0856a36f68d18d9789663f. 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/USA2P2423392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5816102786db20e75433494ab34f65efb275f02bd903ae8c4100263e25453. 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/USA2P2408241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5816102786db20e75433494ab34f65efb275f02bd903ae8c4100263e25453. 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/USA2P2408241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8c9d362618226faea172f18fe043b2b9914b0b0c2bd7024eda3b4ff4e658b. 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/ZA56E2304783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e204fc0128b5420d820de7258d038e7f52b58ec76c432aaf169a472f679497a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZA56E2304781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5a95701944547ab011eb1b160693b57ceff59894ad561fb0159691e6cd5d4b. 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/ZA56E2304782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8c9d362618226faea172f18fe043b2b9914b0b0c2bd7024eda3b4ff4e658b. 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/ZA56E2304783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa218adc9b79ce55e8bcf1112f8428b066d20c8f0bc4d91bc828e2e64c03563b9. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T16:06:04Z), 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/ZA56E2304784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636001aa62a8b74e95d38dbb12b198b2859f8ddfdfa66383e15c52c273579f2b. 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/ZA56E2304785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439afa34865d12b8111143b2541014e2a29fbd38678f72d624b2fb21dafc9ada. 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/ZA56E2304394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfa905e0dea1bfec04d153536937c33f023885f41f062a07a20bc48513a3fd1. 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/ZA56E2250453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200d059eafa5743c9fe728f782139985b0b2b0153903b674aca203655f431f3. 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/ZA56E2250454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ec6f0240091a4fb85af36ea17c3a3e2d117509bc658ba80672fe0b5610f6cd. 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/ZA56E2250221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ece006dbb4725ccdbccfd9f86ec67a442fe4f90dd75ea8779e89bf9c94a0051. 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/ZA56E2250456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ec6f0240091a4fb85af36ea17c3a3e2d117509bc658ba80672fe0b5610f6cd. 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/ZA56E2250221.