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 0x1be22e1a81059d88094da8e0aa51743ab0621216271f916eb0ed02053ae3d40b. 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/b1d2ac8a-5396-4764-a1d4-7da056282647.json and https://artists.proofprofile.net/proofs/artist/b1d2ac8a-5396-4764-a1d4-7da056282647.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 0x3598ff2d5ba891ac99be6fb5c082e2b62a4ef418c6957186b9c01b0d2c969bde. 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/TCJPK2039915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aa889a025783907d57e7a5c0332e1a8b92d6ad3fc9323ce503a9036d9545eb. 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/TCJPM2058526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758246365dcbc30db4bc999be66a961f36a4d1a5eb00aafa27b9eb94de0304ae. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCJPM2093064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa8a237358045282339d9d35a68e3cadf9a2b445689810f4e7c9f10b7f4296. 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/TCJPM2093067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d75e9c67e06f91457d3980b344b19e3d89b0eb376efd4426aa78e8a0b29d912. 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/TCJPM2093069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1675cd250ebd90d3ee35a52e56d2b431fd8d0743cceb5ca4ccbd186f1dfa8c. 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/TCJPM2093072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa659d06588d9aa2d8f033aed1b4a9c301c4295e9c9712ebc3c24e7a91724905. 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/TCJPM2071619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f339494180a6af7fbbdbd604c87831aceab6bdb2546bc25353548c0c8e92c9. 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/TCJPJ1943128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca18e0ab8019b61d39e0af9eb52d73d26488ae85eb71035ed68d1aabc8672cd5. 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/TCJPI1990310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca18e0ab8019b61d39e0af9eb52d73d26488ae85eb71035ed68d1aabc8672cd5. 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/TCJPI1990310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0f8df15cfe9a410d4b6297e8f96cb0bb3ebb4b859b4d6f4ba37e7226de2d23. 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/TCJPI1988139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f9ff11d93ba7057dbe2942c4e5c23a265d7ef9e49c9149e8179e1c1afaa8df. 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/TCJPJ1940163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da269b5248fc5f471411345a2e5dfc7a1158b5174029d8f6fb5db9c082bc20a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPJ1940175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc5b025b8a6c2f81dfc8f58f7796dd469fe5473ba62651c0589ce77d68ac476. 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/TCJPJ1940178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2acb74690e7d8c16545c50abebd3e9406794273baa0f16923f903537c5d0ec. 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/TCJPL2039052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31443a305095eb36cd64d6daec0a51ac8c1b9874bace6408995cb11342e1221c. 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/TCJPI1988138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b7716a363778dd753995ab6bc3fbad438576a1740ed46601a1fa955c88c5f4. 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/TCJPK1909939.