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 0x1ff6d22dce01c75368eb0ddec09dac166171826545a008dde20649cee07605f2. 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/99122c7e-192c-493c-8461-ee894964fedf.json and https://artists.proofprofile.net/proofs/artist/99122c7e-192c-493c-8461-ee894964fedf.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 0xa31af4f1c15802950c319189b50fd035c67491adfa697295890e5ca3e06ed7bf. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UST8K1809683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e60a431a63b0bfa9b600009e72b6e29b8c9ea1b5247dba99a65436cf0cee55. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES91855880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e63ffd2c307d7bd3b915898bade4f45c08443c50447e9f74f6109bae625558. 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/QZFYX1986444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a241b9ffc901754eea8f95a0800320792d51071ae02f3e99129b11aadbb2d. 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/QZFYX1986446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ccdb19e72bde5b1eac9951bc0702c3afd2bd59545b8ea27192a371bb747d1. 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/QZFYX1986447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0d70a640dd519c80690e794fc488a39289bce8eed6f1d24f2060808422b1b7. 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/QZFYX1986448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52bdc60fbb54985fa1a6cc75dafcd4c14cc25adec5783d07d9bd21ed66cd0d. 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/QZFYX1986450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1903a9f84fd7a76430f838314c810768821af5d8d4e796f79bd4c57775c735. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFYX1986452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d5ed1b4d6317bb5d609623cb827248fb53840e20aa75b4e993af0dfc0aa81b. 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/QZFYX1986453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635c49bc617444ea8f2f40a5a08ad88eb255212b961a75fe5effda327ce79b9e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZFYX1986445.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc711263ee7996542a3166520605cbf1350145efd4e98d19c791d6d077c3d6f8c. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/QZFYX1986449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5562d96cf517b876a563617ae683c4de8d9ddb40ecec4eae965a5c223c94d1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZFYX1986451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0022aaaf2326985de3f1f8d0842eb9fc2695f6f184fa170b511822306bfaa7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFYY2057481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967d52467917f49ee042393b008b7e639e987b2916c94658b3693b9aea02973c. 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/ITRZE2004405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233f4d103e253e1a8cb85a8767df4be788c4acaa54d38df0d2d141b7ec352eac. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:59Z), 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/ITRZE2004407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee774b9c5d8c3f2e62aeefd7d067fc83b2f56fc88f43c8193c03f6c125360dc. 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/IT9BE2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c659e5e24604f14d19ee30855e85a42a04b699b4b51c1f2cc58eebaa82ff79. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZWFT2403808.
Sulla maglietta (feat. WISH YOU WERE DEAD, Yota Damore, Nick Sick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2048858396e22a0e4379e47da2af84550d2f5ee370da401438d56eafd21ad914. 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/IT2HQ2200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4bf370e0000ccff10b2ba98b9342d574ffa8c3db09492d6530172b73db7d1e. 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/IT2HQ2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8befd4f7e3d9888ee94ae971c5dd721e78312657d6048c50f54fde7447f4859e. 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/ITRZE2000710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e887a5b049f735cc52904a138e750b4feded89e6ee24f010d0ee6e51d43609. 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/ITB551714721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd8d6ce99493f0d3b2fe77e7946cafd452e3f60345f2dbd0edb9302f9ea73cc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAEH1964428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecb25622904ebbe41af9eb0c3a071c9ca945ff6b9c6bd00007280219f744fe6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITRZE2011604.