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 0xb641d8e47e8be15d7d3f3ff117ab00fe0df35ab3c8c1b9cb05235ccbc3896668. 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/f6231bf4-5e20-4ca5-8920-486c319b4aa3.json and https://artists.proofprofile.net/proofs/artist/f6231bf4-5e20-4ca5-8920-486c319b4aa3.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 0x69a05133fdd506349e0bd1194f076870daf81a1c5793b2a5231ad6040bf5cf2a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:35Z), 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/DKEB61401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233d830af6ddd6678d5598d731ec4da8f71b1972bb7f5eb04d16f93947290931. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:53Z), 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/DKEB61401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ae5ada3cf3da729aa08d87264facc16a3354e5d9b545e763fa880ddbe023fd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DKEB61401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2f8575d78a24014988b7dc3e9cd8973a8ceae23c378922242564370d1ef767. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DKEB61401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2114a2c494bbbdd4d15b716b7aaff590566236b9911360f3c05d7ecc6d9d6ef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DKABA0108307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f9cfec21f756ce7b4e55d21613b7c256cf801f94622c775f61c862ab38bac0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DKABA0108316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa970ddece81e94d6d43dfb908727e5c220084dc414bd3887d73c216e24e588f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKABA0306201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8319196faec5e32311e5cbd35a6a7a31dcecad4275e7dce0baae334e702ae260. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/DKABA0306207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac64da3237fe401ba6c6f8cd5d7e655f4920b1b236f944bbf1c65194405ea59. 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/DKABA0306208.
Hallo Haremis (What's On Your Bloody Mind?)
Hallo Haremis (What's on Your Bloody Mind?)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebeed60595d04f409211b1ad61ed3d9ebf0e1dd3df5260a3e6d8f2aaf84015d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DKEB61402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d81722784e6eb8ed2e5a3675e365a66db953b8e0ace242931d343e9bb63629. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DKEB61402002.
Man of the Day in Cloudsauce (You're Talking and You're Talking)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13c13231b4f8d1bef3b12efb67e71ce4c11273c7ea107e2f27b92748312ae5d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMFMF2399282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297a2d5a4856d88b0198903da4e35f5502f9640d9871ee32861a1ddff5dd5747. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMFME2433446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc257044f878d7a42414f97d320554ffc88baad18a83e458c2308f103d77544. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFME2433448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2d8a66306cb070e86d8bfff7fc129eca822cc259c7eed2a668f611bf237c0. 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/QMFME2433450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e61346741b2fcecf7d4d279ff2a099df4ba3d74ac237096ea12b0ba332ec6fc. 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/QMFME2433451.