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 0xc02ebe5236b6f789f354a53946c35a41e498688f288d88fab737cf0af713bec0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63c8963b-4fca-48d0-88bd-d770dcfe4eb6.json and https://artists.proofprofile.net/proofs/artist/63c8963b-4fca-48d0-88bd-d770dcfe4eb6.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 0x146b366759ded14e78f960ee6d3d8f5ae86691c90873d71a1569ba7d0dd495f3. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/DEAM82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab0852e19a2c672496cb318616e8ad5012abe07265ab73f3e12a472322893fd. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEAM82400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0310cdadc63aa29211ee2dbd789249ec86b67c7615148576ddffa04ad1c626f2. 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/DEAM82400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac256ae819017742f7aadd467df5d500edd3fc139622ebaa13c30ae94d3dc0d8. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEAM82400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3794ad70421bc4d62ad0b06e57bb747e4d2bd29b9a9147d31cd2706c205906. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEAM82400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7b09d96b8db5c6ce631b66ad0a8fed90b5abb93ea998f40beb52d47a9ae789. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HUA152030113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6870a81ebc4794bab8bf5601863274bc57d42870449184329d92edd1ba343022. 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/HUA151826802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ca3c88963a5b12d09f1d30bcbb87bf1dd7143dd6ebcd6e5150bb6eb5fdcb90. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HUA152331201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91467f131569844d5a62a1a67592feaacdaafd287b53a5ac144a4d29a61ddbd0. 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/HUA151828201.
Daniel Erdmann's Organic Soulfood (Live Shed Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc77ec296fc6ebcf7edd0a32f7d38b6b02afb293c4139fc6f9ded96783a6c7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/PTNF11900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eb7def1d4697feafaf7c933bf1f099d38cdf9c9a1f8078b028b74b387b63e2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/PTNF11900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814a71a0feb648f462d2e8b5e1d9c376ddceb777397fb606543e39091dfaf9d6. 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/FR0Y81400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a24b4b5992d0e7194a4acc0b3a93abcf4139827f1e41654d108ed0e254782b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR0Y81400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a26002dec02b6e421ec02b7162c84ea7d5e73d238898b2ae137154fa57c44e9. 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/FRXVP1903401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44de2f60493aa87d9e03283396507b46b115132db9739bff296a61f4c8389e30. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR7PM1700021.
Synaesthetic Trip, Vol. 2 (Beyond the Predictable Touch)
Erdmann, Daniel / Steidle, Oliver: Lenina