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 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 0x267965fee0919c1016dc8351502c240fe747a6f0425a6e4038651547fea9691c. 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/b48b4824-dccc-4a79-8bf6-eae14d9c9765.json and https://artists.proofprofile.net/proofs/artist/b48b4824-dccc-4a79-8bf6-eae14d9c9765.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 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 0x4f5b5e4c651d57d0fb4fdc1798853a4823841ae55228f459328a7a8233ea92ed. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/IL1041801661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371f0ac519486db2a83e4d99fe67b68169b8619e2eb7973a7f5681e0bb42e0f4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IL1042202551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc973acb0c90e03bfb09b61457a6845e40a23964c90f2858c3a1e1ad288805a59. 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/IL1041701812.
Vol. 1 - Underwater Fantasies - The Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41760125339c83239a05f65876d94340deeb9d6a3fded15d01cc102a082313c3. 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/IL6652001894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f0f68de9bf08e2cd2e890e315b2db8ef17369f8d10877d553ec6eb189b93f3. 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/IL1041701813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe546dbb4deba8dca948585bb15069ae2e2117f7174bbf7d54095c197916d0992. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL6652002123.
Flight of the Inner Bird - Slowed & Reverb
Speedlist - Artlist Slowed & Reverb Songs Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4248328d46b46e4ebe2fccedefce8c0fd0388299095c4347717b3e6df174a5bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL6652306710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5697f0044f3cc073b8fa5053b7e6c97c2e784d68d47a58228b89f42c97cea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL7112001092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b22dcec9dcd9e3e443d479013dc3c6d89cb361561e22e37646462436ac739. 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/IL6652002125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5a0e3f01c6e178d485f222868830282b62bee28644e70c167a09f1c1513002. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/IL1041905205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b6addd842d37ece3e1c678797e0a27917ec9ecd4536865e951f885d389aca1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/IL4070902119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5697f0044f3cc073b8fa5053b7e6c97c2e784d68d47a58228b89f42c97cea. 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/IL7112001092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288f7cde121915f4c7f5f92d2d5599d39988a9092e55e46f28c255979d97ba1d. 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/IL6432200735.
The Most Beautiful Hour (From the Songs of Yotam Reuveni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9616a49a8e2df52ab8c45661a9ab8433dcf03f2fe7f98ab410b0f5d5006e38fb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/IL6191700486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf097c4431bfb0006b6add39c466d707bb444534af3751103634369541882462f. 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/IL1010003747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f0f68de9bf08e2cd2e890e315b2db8ef17369f8d10877d553ec6eb189b93f3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IL1041701813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37854da65dc71b3f879da53f1bff58031b680b15eb718504249d6d88b300ddfe. 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/IL6432200739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e24ce0aa4946835a85ceed32a40e5c125de58374a8f54d13954affb8652aeb8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/IL6432200741.