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 0x240758407932740bd409d2aed01bb749d211c707d51d429becff60a2c7fa31db. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36746045-e47b-47cc-9315-96040648bc8a.json and https://artists.proofprofile.net/proofs/artist/36746045-e47b-47cc-9315-96040648bc8a.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 0x74a949a71f7246dad3ce3ca6c2a9a4dad4edbf6e2843915bf676fa84df9e3fef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX762139229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a3a3d21a75ae79893481049cb84e3cfe22fb57f50c9a6a56661ba294d1797. 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/FR10S2426610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bffbacf1ba82ef9c98b498ed4fa43e11e45852cacbba833e5a928cc70509edc. 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/HKD012317824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec44b4bb8d842230d123de5edb98bd0cafdab93c063742087544ef9fe43ae431. 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/HKD012317817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972ae21721e85c676b9a6d422a74c74833a1ab98c5d1f7a1f502c8fc19c8210. 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/HKD012317835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1754173f46bd75a5effec643b7fad61987ec0467bdf4cd9b3b26843dbb3a5d5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKD012317825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dbc544295192f4fdd79f6df382d5e1554d94ef3575b3fa7a561620cb80239d. 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/HKD012317816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf83e7caddb83d15f48c23944dfcfe5f1be68f883c955f40fb78a197bb4e70e6. 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/DGA0H2318823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1825f66f4d84d7244d4a0a2b4dc02f0af45fca9729a3ee87666d22d3528a765. 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/DGA0H2318824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b4b21663c75230d56dfd437ea4718a3aba4b6ec9bc2ab0c61b74370c21db32. 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/DGA0H2318826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f66d2d16723557d0f18bc980e11feed1c20f74925c1b2e8425ebe85bbcde29. 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/DGA0H2318827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53810775737f7c45d959f396eb811d7a585303d02d25dc0a3633392e3a679247. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0H2318830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c66ab1f3cdda5de98432349cf8787812f4235af396650059682c77aee22feb. 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/DGA0H2318832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c1c023351b7eff5ee7eb0638e091247fd7944d3a01ca61c752a64762ccbc89. 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/HKG732130093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743fad2bf06f254021b7f352eceb0d53ae2b22931120363629ff9b3d5fa4d915. 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/FRX452098998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fef4fc817eb669c82e5a2f9a9234c3943a1e3da91923b5653b83985ee79592a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:45:19Z), 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/FRX452098999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5909d2837b8f44dd57e67ea4120596f760b664f03f10f6f875827ff9150a985. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWU711904770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef54b90ca2122be5dc207239a8f3c9e2d5ba19874e333ded7dd0debd2b117f04. 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/USHM81917211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfceb3a93641f4ff937ccdefb5f3f43e8333adc064aa7136b0044686d815d8ba. 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/TWU711904771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b584e8b8e968a636214144c70fc312b680d16a371aafdf17cd273186a0b9a77. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWU711904772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef54b90ca2122be5dc207239a8f3c9e2d5ba19874e333ded7dd0debd2b117f04. 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/USHM81917211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4169fb257fecdf1584a41e2084f72994ecc981c2dc9f88fbfaae799136cf0b0a. 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/USDY41966463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a66595533c797664f3b30c371a7467a05685de27a0322fbdad20031cdb1d40. 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/USDY41966464.