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 0x797ea7c0d646274aa23525cb7f100ea38c52431e8b8b82433f794971c1d3c9f9. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/549d53c9-62c5-4d86-af51-cb5ba2e7310a.json and https://artists.proofprofile.net/proofs/artist/549d53c9-62c5-4d86-af51-cb5ba2e7310a.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 0x009dca0d1a87e42a3799a3785feb40940013949add6cfcb83da63229851be3de. 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/DEKD61217070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd17fae874916c806fafa11ee56846205724341c6a57504608aa2549accf51. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEKD61217180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970ebf3aae7c18af896b80293b567deff422591f0465302b97a2b1d6e3be8db5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEKD61217150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0c925488397f4819fa008f02d028ecca66d8f0c7b248ac655fa8af1d8c7998. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DEKD61217140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e3175b3e5f206c211644c4643604c75b480c26fd3415d2d396f8efeeb2442b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/DEKD61217170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046830b34aeca04c8917c75ab248fc62d16d9b25e95793a8748ac27b663697e5. 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/DEKD61217100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908bac5533cede6865f9fc821c43d207df41a6e26fb3149d06325c5903baed01. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:26Z), 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/DEKD61217090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d52735add1d4130df4d8ebe36a5332729f7165e834371e8f6f4fc92bc022f3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEKD61217200.
Lobe den Herren den mächtigen König der Ehren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9298accd2fe5582c6a38d7ba694d1d531fe9a7602af39a3f1d2df6dfb0afe1b0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEKD61217120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65274c0321926525ab0840cee53039a9c8980d94f4c3ce38e14a9e5e1695d32e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:55Z), 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/DEKD61217080.