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 0xab48d66b0b869df550ffb52a7fd65f76768cc11211a139427bf412fcce977b18. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6523970-c76f-4e46-8fa1-4d6babd9da31.json and https://artists.proofprofile.net/proofs/artist/f6523970-c76f-4e46-8fa1-4d6babd9da31.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 0xe42bcf34416bdf4f381e5d09088594dd97c63c744ebd8a6b018b17fde922fcc5. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:40:02Z), 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/UKCPA1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfca86f92956facc4d8a965c4c435ce8f2021ebec71824b61d3cce6a6f94a617. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/UKCPA1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975031b5ea68ffd144076af2b4088fe9e82c5ccd532a8af8cc3298f89053a46c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:34:08Z), 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/UKCPA1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8905ce8562d83a44652937854d5d0c8141151ed26827aae22c0a31eeb3beb38. 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/UKCPA1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36d55d3b8ab38ef8a576e8a1e47e1c5bcd50fb06a1d6d938a041a6523e8b8ca. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:50:17Z), 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/QZPJ32168557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faf9d011b6d040ea071e59b2f831c3b1c9301dca16ffe4a81ee3b1c7b6996d5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKCPA2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1220eda0f4479bfc3a2e815ae10bb6daa31b8af5869ac49661b17b6707b7d44. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:18Z), 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/UKCPA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba8414979276e29f5d985c2a66ca651923d9593da86f3496a05f0c6813f825. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/UKCPA2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa92bbe2cb541642bf9233e276d7467738082b781e03d2b309751dcd5527103f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:45Z), 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/UKCPA2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3074b87e789fafb95a5dfe8d165ea76c0c6e04705e7418bb08847a19920c9326. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/UKCPA2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dc5ef0127f483b5eec62837e3407270efb2864eea36c9f34755bd5096e345b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/UKCPA2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34589315c4fcf4400386f97254bf12f5e1ef2724ed5367b5a0cf6f3a54219c8d. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:56:13Z), 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/UKCPA2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93926dc515905ebad5455a631fc8a853e29429fece9bee10c4be515bb8dbc1a4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/UKCPA2023001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ab194844c2b898b55f3b5ceab6c144f219980de856b668e846a08e8db9ee6d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/UKCPA2024001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36852fdcb5bc8499d2cb6161d8f333e56bfbac3c2b48f2482b5676563278e892. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:58:50Z), 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/UKCPA2023002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6402eb358f40aef147a36509a25afa4c89f8aec1dfe2e2f0c5907adef1cee210. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:28:24Z), 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/UKCPA2024002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dfd9449fcdc0321d2decc2c6f85a63b3ef5984b2382948b456ce523c4c8d5d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/UKCPA2024003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9eb7dca65036fc6dfb11617ec95e082d66b5875ee85da7b08a2859a7b65e37. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:41:19Z), 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/UKCPA2024004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f77693da95eff2c9c69c88c8db2c377c78400847596a1555b7b67eac45836b2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKCPA2024005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab2c44b8af585119ab2ab62045e40e2da57ce6b51bbd95b7b89c9d0dc97265. 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/UKCPA2024006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93926dc515905ebad5455a631fc8a853e29429fece9bee10c4be515bb8dbc1a4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:22:48Z), 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/UKCPA2023001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a58b6808e3f46c054af188ac0e1369f5b26bcf81b96f2451fb5340a26e5ab2. 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/UKCPA2024007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be0fcd9f7c04825d9b2f6764aa574dda53e84227d3d00cdfdadf797cbafa24. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:50:42Z), 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/UKCPA2024008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2aa04368f030cd308614949b7f518d7aba2dc3a0600b78ed1159ec801e8e5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKCPA2024009.