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 0xf2ccf160417073b094e27ceb0a5ad7cf40fb6498b600e9c61c9343b911a7c2bd. 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/872be0dc-de12-4f22-aa6d-7ab7b068128d.json and https://artists.proofprofile.net/proofs/artist/872be0dc-de12-4f22-aa6d-7ab7b068128d.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 0xc5c93ee88d1fa9c53549448e9856224847464ce190bc2460131730d744baf88c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAC221400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d5000bc0ba7482e0572c03c1b2d599e941861c96d2e513708e8006d04846ff. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CAC221400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cdd124a67b3cf1ea468e8cd8bf66acb189682938246cb8eb24195df3fcb7ab. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/CAC221400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cabc2eb6b44ec86e1bfc7faab299aa2544e42c5cce840988f33813aa7299d67. 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/CAC221400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95d2a3ad5aaf02b4303675f4ed4eeff8f38aa68456a4dce093b1c34b0bcbdb. 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/CAC221400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c87ba4a86706770a21175735a60b951c988ed84164449f252e18dde21ba390. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAC228500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45baac324e1e3c23cf2c30e2f5abda02861770b89af8265d320e713bb467bda5. 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/CAC228500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff891876d5887ee2103670122bb14b9e9659a2c03e7be4039f81d0251c5d3b50. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAC228500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e0da1d0132c0b32ba944f8af522e7d59c2f4fc72d0e563b465bc2a58b3858. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:21Z), 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/CAC228500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379fe0b210561ca34ee19bcd90275d3834cc72982ad1431f3be4adfad79a9a18. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/CAE248700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc626e1ddcbe28801ab32a0353d266b1b77bebcc4ec3c6ba0d922c9e21b55502f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAC228500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78801ddec6a7e69ae5177e529f5a13c1aede7bea4adff8ae9c9a6678f014b79. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:48Z), 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/CAC228500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379fe0b210561ca34ee19bcd90275d3834cc72982ad1431f3be4adfad79a9a18. 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/CAE248700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ca5a84b9973d9a82c01b6f56dba3b9d6b2f9a5607fd0ce5f0b3a3d4b657cc3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAC228500027.
Standing In The Dark - Live at City Hall, Toronto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff466cbd4eb7d2286eac9e20075ab97d9d1dfeae04d7c458e9be124af1bf03e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/CAC228300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36a6c556b91abe4a9639ec5430b01c064db09db9d51fc32b8aac47b684fc7d. 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/CA8CY1200002.
Beautiful (Al P of MSTRKRFT Remix) - Single