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 0xfc489b56860a98c04f2535633b00e5ec51be93221a5e221f8969bb151a0939c4. 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/7a621efd-7e83-44c0-a61e-323066427243.json and https://artists.proofprofile.net/proofs/artist/7a621efd-7e83-44c0-a61e-323066427243.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wer hat das Gras weggeraucht? (Deluxe Version)
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 0x4f5d8a3d2cb31720e9a504d1b664e8f991661cecbf09a92c71b6c05e85af184e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEQ121643291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ddaf46447186245813f553cefa858de12f2f914413885b660286df8db78ad2. 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/DEWX12200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5cebcd7f6549b01d02633a017673501518b474481edd46a7767411a37cab8c. 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/DER411700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b563ca2b2b5f15ff6edfdfd1219503339fe161d28ac794cf360c3cf1299fc9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DER411700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c5495537060135f3aac391a65fedc98a0a10cf6c8fd09b5ad765399fac3cbb. 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/DER411700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c81a35f006b53673097eb15ccce8b31f97e77e9505cf6daa1ed46b7a77632df. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DER411700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e41b399dd9f097a381c07aee1fece35247343c7db9d63112f0741396f0c211. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DER411700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbe37133a665dc96492c4d71aa3b72dfeea0dd51f6bc3854030b35f51b6317e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DER411700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f899cd1be1870a095bf174041fa541704e432580448ef8c82c76b5ec8a2bf. 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/DER411700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197fde489f85fa0a05dfab239183f780b397ff18ee2a4655c1e6e77f435c33f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DER411700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9b611c7f8b2f0723d7c80e124defcfcf7023c266882fc7e9860d69b9746c4. 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/DER411700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340226627769c41d45518332931eefffe7c99d957f97cc5748661ccb3e4b4e65. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DER411700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb5d30d133fdaf72068ad5e9c4cb8b196beadebdefe7dad93742744ab073da3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEZC62374240.