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 0x01f9a13908e2aad316970f5fa2715ecb8fdcee54a35201dcbd3c9ae00cd2f98c. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ca303a6-80fa-46a7-8640-63ada13c5dc8.json and https://artists.proofprofile.net/proofs/artist/4ca303a6-80fa-46a7-8640-63ada13c5dc8.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 0x8d9f1a01f6ee6466029040a5f8d540121b061e4d3595daee19e04b9a3d55244d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEU671600218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a1d740b12fc06910451fdd9c9e59b495746a663273c5bfcc872c73fbc077ce. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEU672300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcced277e71e53dcd959fecc0d3188714a14114d92edb6508d8976368a95d8f43. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEU672500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72820aed697f28f7ec1295da12d9838a505a7fa4392256d189f8f1375bb47205. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEU670300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c191e1f8853eb7c9a7ac2db8706cb5d3876f877ac6ea9aaca2c6da5e93fdbea. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEU670200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a1d740b12fc06910451fdd9c9e59b495746a663273c5bfcc872c73fbc077ce. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEU672300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28380f64635d9fcd60a3e948e2c6afbe3042c9ab3910afdc5132ec58f5cfedc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEU670900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94574e5c902c1435f21fe6dd4faa65de6d6d82741b76288e1fd27ddb16ac8af1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEU671600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ec7c6d1a8002acefe4661e4841b01107fb4da27bbe0b215cde290177ee5028. 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/DEU670600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9f36d90b0b885a809e8e9f1e2921cf533f17ee7042facb2a0f54152bb53f2a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEU671500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088055cce703ebda4242e62049e60ae8c8afe0971268687c2d875f52816f1118. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEU672400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c265ff13e59ea4ba78b8157ceb9abb5b6ec647b0967fabc799644f10bf3e2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEU672301539.
Pure Vernunft Darf Niemals Siegen (Superpitcher / Wassermann Mix) - Edit
Pure Vernunft Darf Niemals Siegen (Superpitcher / Wassermann Mix) (Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600fb5cf995571835553e9e0f214d44c90bdc513383171453f2a48c04ae5ca2f. 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/DEU672500468.