Greenskeepers are an indie rock/new wave band from Chicago. Their song "Lotion" is a tribute to the character Buffalo Bill, the fictional serial killer featured in the 1991 film The Silence of the Lam
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 0x163cb412ad7d168a5950ff27829d51080062e3d87e9d17b341358cef074ee142. 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/d3c51c29-4c97-4d83-a6ca-32517c701b8f.json and https://artists.proofprofile.net/proofs/artist/d3c51c29-4c97-4d83-a6ca-32517c701b8f.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 0x38aeb7cee69d565c76c8623952366a73229595dbd7446856a837c41a4b6e67a9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USOM80623101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e76cfd9bf6e7dfdaa1fc58d16ec0c2ecf8ce5186d5963d05843c5b592f8289. 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/USOM80623104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b04a307c4262a75fc9f969d6cc6728c19e67201c343649a0e8b93e34f8ac16. 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/USOM80623106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ccabf2dfe5c1530016de17f53e431d6923ede9a8c854cb028e9a5b1160337d. 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/USI4R1056377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878dcafb3182fa6cf9c7b0b0eefc9b414218cff7b93ff510c6e975ff0e84f18b. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USI4R1056379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28a2ad3e40d4384e4bdd0ed1c99ae5a5479ff8919e9cbc7bd9785b907caa050. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:03:41Z), 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/USI4R1056380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c36c9d7d451289986d4e9f216df7f87d6a503f2eb5031383fce5daaf27914a. 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/USI4R1056383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd67bd48c922af0cd7774b1ca9e18e97f097e7fdecfc6bc59a19c05fec3de5be. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USI4R1056386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52183106f8dd7eaca70e1d78b515bd7b682e795a2ec13d5f34cd9d2479fa15d. 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/USI4R1056406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf4e3cce96917e45e3b4c0cdfb769dcb15dcebf9b06eb2e381e34fc226e0e4b. 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/DEY471721965.
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