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 0x1bab944b3ff06683bfc3d4fca14c0296bb90a303e0c8941b17b4876c6957f558. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d07432bc-7087-488e-b1ba-1fb71973476d.json and https://artists.proofprofile.net/proofs/artist/d07432bc-7087-488e-b1ba-1fb71973476d.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 0x5d965ccf33b6a6de5dd891174dd63a36b34cb1a4d318bef41d2fd52f9fef2958. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USY281600272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d171051ccc360aa62b0d43e213b09e3afce9b3c1ca9e98bf32386a80259dd. 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/USY281600266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f6370318fea86634daccdf0f9825ba9e816aa7b78be187b4bb52f86bab931a. 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/USY281600369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11aeb750dd56d30d87019ab97ae5ea6ee38066982c7c9982d33e1656fea302. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USY281600303.
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 0xe346e6800d09abfe3ff123f5a8128fa31d300dff4e4e4a1cb9f07ef7a48095d8. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USY281600213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b7f4604302bc59d4008fbecbcddddce9f5b42913a30f964ee56596bedea197. 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/USY281600339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a572554ceca1666d458ea47613117e1cd0163ff06232975553a88b34fe0a955. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USY281600316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eac55b50ae478ca83ca4f9d76010af9eaa22131489925925e0b6ac83eaa0977. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USY281600283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee295426c3b04b917c2d7c987546e51fd255d4ae0fc7bfc334f83ffc37b766. 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/USY281600320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87acff4d879ee9058b3941fb28cab722a21f94558e78d7ef4ee07923cb24936. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USY281600395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ab0b0d6b9660f2f90f040b7f40dac0db5ebcc2cb9344548bc16d9adb72bac2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USY281600354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5302ecf530608233c8c8f14170f27929c63cf976f2b8408080e87cefce53bf. 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/USY281600261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02398c9cd29f550c311fcf0168c5ac089de5e5c6987628f3b34b92795e588b07. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USY281600276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699736c9c467fd4b4392de193f8d285bb3cd53d3ff78c9617d207a41258ca02d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USY281600340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6515fda6de7f2b0ea2ee7d1f62db7dffacb554c67b0c4a4dd677fb2dae8b97ee. 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/USY281600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ab965e304ae7073cd76f5779ce252935ab07cee675c01bc5e8ec4ba527700. 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/USE831552914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ca410cff4a9c7da2410fac7dd68ccb549f0ccd4c0bf408c974e8526f9cf084. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USE831552915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41db92b62c00791e8198d62040493ecfa0c19782498fc75b062cacb03bfa306. 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/USE831552919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab9b03a03bd8190759320bc13845c50f0943546baf548d53f88fc695b5cc611. 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/USE831552933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a422145cfcfc3866765ff16de82012596efaabe770a2be3dd0c052d2f3d53b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USE831552921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddba7faae6af7ff2db0576d0a5e1a51040e570c05e78bed744cb2a30342e67a0. 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/USE831552916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371cf2ba743a39d2c41241f4e6c273e24456397a4b56bf80639656d7f6d3f9aa. 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/USE831552920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fab301d9a21a2d0683fbe87008664f40ec5a13dd606ed6d96c8f20bbd0d49f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USE831552932.
Don't Go (From "Five Nights at Freddy's")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09fde82dc4cfe103c4a4e1ae698b8c9ea312a50c3e791364264f35555e3b0df. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ9Y21772584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa838eb4feb7b1038e4cb244127bdf804dc7a676e7172ae934190a7f15721b8b5. 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/QZ9Y21772583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb021b324ed50d4158a97cfa16b41a940786405f6e22362eb60888d1f9bfb17e5. 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/USE831563797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345b1434127a4cda087b12d1881fee9c58f3f7648bbf3ec1577c62b329bc73b3. 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/USE831538306.