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 0x30b908f93b7039ee831135775d79a8e0b0dce3b7c1ddaa90f1c75bba169cb6eb. 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/7158de93-a880-40a3-8a89-b50b6e2963bc.json and https://artists.proofprofile.net/proofs/artist/7158de93-a880-40a3-8a89-b50b6e2963bc.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 0x7a3a9c0bba2d0515aed2d78e114fc5d64fd9ce96cb04372dd2385e09cd8a5ec0. 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/NLE802200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff8ce7ec3d2bd9d58dff47a80227fa725e34b469f45996d8d65dbc1fd2dafa2. 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/NLQ8D2101827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40d0f5e0b831f92dbb742cf437b146ec338bbe5828db5e901a3266e59488824. 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/GBKQU2429319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45457fde9bc70cae65b3b2d5af1b707bd43d62c630d42241c99a3c8aa2ae5fe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLE802200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bee11aa048d5b0ac5b8112fab7070b61267e9fe0867d16eca0bbf52354db4f5. 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/NL9CE2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eea341bd057a35fed751dce721580b402510c6b3037083fdf80de19e489f0c1. 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/BEB682200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f87e18e46e06aaf862d8e42f7a769c99d7153719bc0b824b9fe2cdc1141a92b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLZ542202219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b4dae2831184e86a3ce39daae8c8e2dd32c12ef4bc40bc485b37126200b0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2237759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ddd85946862b7f58fb72c0f300b73b7aec43c37eef24d499d4d0b1e1f1d63d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLZ542202176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e6181928218abea31658f5441e61da63895d810bcf8b4bfa4131cc934f74d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BEB682200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2694a241ea158817fbb95efbba2977acf1bbc0f86531858bc3607a30eeb1f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLE802300567.
Holy Water (feat. Maikki) - Extended Mix
Holy Water (feat. Maikki) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a53e4d74444ede6e145765b44c4ec991cdb2b0f0b3b4174411715cad73ef33. 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/NLZ542202177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f21b0e30049c8b16da94fbf271f7c54650bcc3d9a9c0343f95db2b54af91316. 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/AUNV02200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712adf7f4bdc037032ae1d07417514de6498e0835f925f92dcefa12b5f7fd722. 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/NL4VT2100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238ad2e2c08ee8a027409ab525d6ffc0ae48b41b3b887c496d6fdf1836b365e7. 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/NL4VT2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eea341bd057a35fed751dce721580b402510c6b3037083fdf80de19e489f0c1. 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/BEB682200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c54ff244176451cb7a77e7d8a2e278241f81b7f28404aaf9f97378b0c7b85b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLQ8D2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d548ec250c95cd6a282b8c92db3a4a3178ccfca6b672f1abc2446325be9272. 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/NLZ542101382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74830bd1ac079f524413b8ce82870cbf73a766d5bd6cc7d0130ef85e7bedf21d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NL9CE2300001.
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