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 0x30172f503b575df0b58a88cf404a1ac80c358d7e9ce6e7e925a7e3e4e22a6d20. 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/d3fef018-0f9d-4a90-a5e2-0fa0dfaf6a70.json and https://artists.proofprofile.net/proofs/artist/d3fef018-0f9d-4a90-a5e2-0fa0dfaf6a70.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 0x8d28dca0544c322190e81e8e2702912dcbae1d914d817595a2ced975ed3caa93. 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/FR10S2149271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac2990214ecc44498c050730258735279ec65eb68d990cb5b23542370cd5363. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S2147582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0d59649722868965658ebc371d9090e23c5780df4c1cb913f3c46db60fff1f. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DGA072155325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c419a6960ec9af8006d26a16ddc687ef74bad35a85f178d47edc519fed1a351. 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/FR10S2147581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51afce42e7735d4d4ddc765a99d0cf73ffb5372239260769e815e0da363f879. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR59R2155805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086b3d03f10d9b02cf6906e03cf347073504a238bca3d27d41f5adde2ca1a350. 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/FRX282294255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a9491af8330f9e5410ffe52e6575005e13c9e9560cf7e3cdf06ec7ee9c4e91. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:43:56Z), 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/FR2X42331594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25be710116c9589b25470048e7307e9db4989416264974ae0d635375d91e4b. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:34:48Z), 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/FRX202357037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16480dbca67ad3f1f7081b996e31b50b81f85cbf29268f9524a2d09733ef25a4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FRX202356845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b29032c94599ea056cc0019d75072bc36579388f74578438620801a45b2e62f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR10S2535509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48e7eaf9151befbdf94e5a258c10191d35d84c7b450756075daa5e37b8810b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR10S2402381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa32bbbf686abb5e431271345eb39e6357998e61bb3b63644b09bb7d918a542. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX872423634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7890d81b71ca3dc5195461faa680fa437e19742ba26e685de386d38bea3207f. 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/DGA0T2413776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392cf6e7d8cff03bdb65b46508cc305a70576157736b355594f1a2cb67dabf55. 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/FRX452500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf4e24dfea72fa78e1df4125d6334be54184a76360e1da87ad47f0671edbf19. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX762571682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eec9fb5b5e6106bdfe29de2b74a1b1a76481fdc6e79dd789ac190cda98655e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:57Z), 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/DGA062576522.