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 0x6c114a725efb72844dac921e50db9b4dff593ab328627da95a79dbe81de2e1ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a619317-d068-4b44-9571-dfc98be4d618.json and https://artists.proofprofile.net/proofs/artist/7a619317-d068-4b44-9571-dfc98be4d618.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 0xe7badb62b6bb363b6c353063465f8a7c8be369993f894b1874a78f04da0f88ba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYOK1302674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439769ea480d1a2293e2ca4945080966a7065a0c9ff2b925d177792b60e6823e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SEYOK1302267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe07fca87c925b4e1b160f19cac9110cd0b6e8fe266db03d678aec2860e12a5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEYOK1302269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ba6984be8cef46f6ee67d5bd9e4a3d8f7934bc74061e522c81df09a0a47731. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:48Z), 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/SEYOK1302274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab58f8332f4ec26d9826313aac77713b0bc7617d74c40ee6cf48d260db6efecd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEYOK1302191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506daa5de143915a8366d8f16814927a1d7c6a6d570cd468ad3475083ebd09e7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SEYOK1302196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51864b49c2045e483ed489aac5df8cc13b06ad84337c4d28adf0bc423222d985. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SEYOK1416798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a804d7c99cf344191cc2dd444a3199b012f4b0e1de506278fe089212bcf1140. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:04:03Z), 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/SEYOK1416802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52edadbd2573279343fb8b36b581e3b175087ae86294f33aed09132f2ea0c2d1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK1416804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07585d9cf901f9d0a0ed7e1980a906526e39eb25c96a3b0e92233eb1ed1c869d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYOK1634977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e19953603d58a654e2957a54aad70d7cfe3b1059d01ba008ef6d5abe6b3180. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOMGP1603010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f46c91074fdd2b8cb94d92d932758415a2ace92c999dc053295fa25005d747. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NOMGP1603040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe781f27731df0d73e8be561f19e4132fa4e539fa502433b8aaed1b86fe3d2765. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NOMGP1603090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f147771651734d710380467f8467936dc0de211507b717b92c3aa78aa4b3355. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NOMGP1804100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c4ced92719d2290458d85e24dbe9845705faaf0405816ebedb3f562ca7b21. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:00:36Z), 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/NOMGP1804110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64a2d9b91f9973516a7d8da2be41de3135129753947b06fbdf403c1bd28fd28. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NOMGP1801010.