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 0xba1cb96ca434e2fcb7a3398dc0292470ae126f4d663f571a5b6a8e80748f79e9. 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/b20a8e24-863c-46c5-b2d9-f684c05dd196.json and https://artists.proofprofile.net/proofs/artist/b20a8e24-863c-46c5-b2d9-f684c05dd196.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 0xeb5f05dced986754d359f494455fd44bccbecf1bbcf237532b10451ce55e6f71. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/NLCK40901461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f127912951a4eac1bbb919bfe44dd7c83be3c2d64d881288a671fb0a3db529. 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/ATR981138540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dcb8138ec4ecc0fbd97f8316e5c667f935778d45c74db5584295c221071d3c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEAR41047036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e650a3da703fbcb4ea028356c5ae6c61bb070c97b0a77419057c5d97ac8a914. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:52:18Z), 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/DEAR41048863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac4367161210b52eec861c494b1d39395757416d7fd2e25895720f289a5722a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEAR41048867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212747f6f83544fc8e2e6f6b45c7dc6556a2c5e4893e785aebc563236ab9d2eb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:29Z), 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/DEH741114337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adb9308e2459716ab0dcf35062268b7fa3e56204ac5501e13100f58e8903607. 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/NLCK41069039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c8bdedb6429684175fc6705e69c00af18fb3517069d7cf8fde8c447551f47. 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/DEAR41227908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbab98b930bf8c2af1dfb2534825ee791f4e0a9d718b8418e77f8fc7cf195cf4. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/NLCK41064723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15def66ee9e8639decb53a0e6cbc06296097fda66f59f1ac8ae9249c58d82248. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:09:51Z), 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/NLCK42220133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea089241f7043a3e910de4f6432a71eadb936af784259bdb9714fd183f97d7f. 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/NLCK42401295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b512b575323e173c2cc4bf52215be334e00cc0e9e2381855c9e1e4ffc3798e. 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/NLCK41037165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556692b21866317c3ea2325f04e678d8717e3a24817defe455f54d5bfcb0d0d4. 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/NLCK42415133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c8bdedb6429684175fc6705e69c00af18fb3517069d7cf8fde8c447551f47. 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/DEAR41227908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303e7739b19721236dc0026c646bf86ec779457172f66abb2a1e53129f8a6aa9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLD682300808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21778d6be9a56c8114beca6c6e036e8f9d2664b972bafdbf6e3fd9bcb3ed2c20. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEH742312836.
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
Ultimate Hardtechno & Schranz Experience, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df3093a2a8d92f5b51f6076c7c7ee771d2ca13fdf40d0727bc36949f6de40c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEAR41227907.