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 0x1e0f7dd3d3e23bee200883f2ce6095eb912a8566482e3f31dc34bd63553db817. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac8830d7-ebe4-44d1-9674-a60999041823.json and https://artists.proofprofile.net/proofs/artist/ac8830d7-ebe4-44d1-9674-a60999041823.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Exo Zombies, Pt. 2: Infected (feat. Vinny Noose & Pappa Squat)
Exo Zombies, Pt. 4: Descent (feat. LaidySlayer)
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 0xb797841c6043bb98988bfe7cc47ce770247099bc68e969f31432cc67a0b9d225. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBULZ1900196.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98e3c1b07faf99ebf81580348a9060045e3e5d2835e7288c0bad1abb8f6200. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:11:02Z), 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/GBULZ1900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e15413b442b13de0c7bffe0ec74b76bc6c2d160bca709c0baf01a6defe2ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACS1642179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565ad129ec4f7ef05308813a572ebf8443c601ebd79d5dbe553b04e6aba1f90. 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/TCACS1642197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d318a284181d64d2c7b03bc9c404e68b84b0e551411255ec2b045446203dcb. 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/TCACS1642203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65dec2145895ae775aec6c948b2d5629048ab99e70c9b69edc5aa6b93eefcc2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCACS1642182.
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 0x0db5279eee70a479f6043bde2b5dd387c658043be8acf6a4e4ff33121b78dec7. 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/TCACS1642193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070a6c04845a8d2799ba9eb1893c6b5995f571781232aa01b488030fe22b30b. 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/TCACS1642196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d9d96649632433f9c372e1d89619f2f4c85ebcae3d1e149036910cdc2fe0ec. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/TCACS1642201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94ce32ae890c6e2cbb3678e81f6f453fc1e2a240a7f8355388165c1e61dfab. 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/TCACS1642204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4718642f640f51a3c18e21c425cf31a60dc3f0e5e4d8be6085415f4aa5b91a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCACS1642207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc018a4c33ede562ac3a62ddc93e2a3a48205f89835e164f9b48b664ca30152. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCACS1642209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5742c0fbfebf52414e53a7366ad7480e40d888d55fe106448b7874dd932188. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TCACS1642221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832cca1e98f2de593931ab3f219b93ac4731a68340f34acb24578171cdf61d68. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCACS1642222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ebdcb530a5b90f79cd1d4a21003d7dcdb55a32fc1444bed4ed89de1140f740. 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/TCACS1642227.