right|thumb|A rural shed right|thumb|Modern secure bike sheds right|thumb|A garden shed with a gambrel roof A shed is typically a simple, single-storey (though some sheds may have two or more stories
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 0x6dd6f3559325516e640670594b3df9fe899167881a8e5e101e04cce84ea4c39b. 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/828d7009-84ba-47c8-a7fd-6ddd71d40a05.json and https://artists.proofprofile.net/proofs/artist/828d7009-84ba-47c8-a7fd-6ddd71d40a05.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 0xb3241316a9fe2516c9d71ec8728957d29b48c8173a2a768805fd5c3fff5fd967. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEOE81220041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da80510908774f5a06f7a2327ae3177c3ced94ef340b5f4f4a36e544564a48d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEOE81220042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b2110a1331798bc9979840a8bdad0b9475779b6e9dc2b787ae4b699348b0cc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:15Z), 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/DEOE81220043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818afe615d8674e9b69af9aeb3a3d6cf0596dba805dec71b07fe3f520b6ac1f0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEOE81320050.
Dark Planet / Dark Planet (Modeselektor Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c41caef1cd955b306a55393f334b094e9a6c3cac8d2135108e6c58d4e568abf. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEPJ11600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336024cb6069485dc76f69f75d01c5acc2fbed20a5e2f3f522e03c755162381b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEPJ11600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9736f6d4414a2739bb5ab4796f07993038325e9d3421654fed2840107649cd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:22Z), 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/DEPJ11600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea8b72fc2b75b2f9f1ec2c54ce125b99d1bfdcb82aab47dba8d1a5a13611d7d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEOE81610416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6b27762a84d4a8de5175b083b974ab081bfc181f8a562fd589213f2a1ca3de. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEOE81610420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16037eb25bbee5a7ce753a9de8e8e4ef986e8c89793767f9be2cc554912dd643. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEOE81610422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5757a05bde137f5c4ceca9b859c138f4b622a193980037b5a1ae2d0e84553fed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DELG71401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90163cc4f3daae30a9ef36dee4cf2ba8b7cef37b85d278f4cae61134210ef9b6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DELG71401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe413f1eb790a9fd48a783f81c9e9799866ed3366838067244838c19addd9bb43. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DELG71401110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd234bdcb559f1a20393594e5cbfc1d4faa305617ea8f5d1289faf020cdcab7ab. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEOB62400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aff5bdbdc9d8bdf5a90cf0a27afb0cd451ae4e5efe5fe5d8ad5526e69940c4c. 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/DEOB62400913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e6eb57c21b5035ff70ee3ed3b4a5e9060b516b5eefd03facb2a545ce25fb0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEOB62400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d86527849ec98023f79f8aaf7648261e7d1c2e0688bb6bbabd2999572af14. 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/DEOE81610350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d86527849ec98023f79f8aaf7648261e7d1c2e0688bb6bbabd2999572af14. 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/DEOE81610350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb5ec793def13f87edd9ecc489840cb2f4526a65e0b8a037725dc6fbe4e6d30. 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/DEU671704038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2ea383afaa3bf7f704729665325a843b76f8dfc078a185df161eb6f7237bf. 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/DELG71000266.
Balance 020 (Mixed By Deetron) [Un-Mixed Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f76a3e761cb73a73057b581f0bb29b160a6f6b2b25302b4f0fdc795579180. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEMM41201107.
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 0xcb9530824a935abad9daf066309a2f6cce9b8769f7c3d7e3d9caba169bae2852. 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/DEOE81010012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c016238e0f4ed75d669d8337139a8703924d6de02f589d3de5e08ac3a4ea3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEU671704029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e84fb1ad5a9364435f24f057c89ceaad2861e2ac0791b1f93d5757d7c1ec6. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/AUNXJ1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e917cfd2f1e7b8bf12498963a4c824886862addf2b97512aab9ba22db946735. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBBPW2000183.