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 0xb0cb785330027e4d08b6064419e0610fd63739e0bbfd4116b1749ed464dec281. 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/d9770477-e0d9-4379-93fa-934c46ec5e59.json and https://artists.proofprofile.net/proofs/artist/d9770477-e0d9-4379-93fa-934c46ec5e59.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 0x9dfa7ffa5e25c97c1e0f014b8190384a53b6627cfb7b3a0dc4f8b2bf5805b000. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FRG140900930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db10c1df86bb4dfa148c1b1ef68115e5b496ce3137a02417cf1f688b121d921. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR8E41403815.
Fearless (As Featured in "Lego Ninjago Movie The Video Game" Announcement Trailer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90ffa299ffa78bf5af5f0e62b69928a6c579cbf29fa6d485725c408fd269ed1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR8E41603647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763fb2f5781d373306bf12640157b3da5270bd4a432537e8718a94956a0ea814. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR8E41728001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c1d62c881bee465f8d57218a2362ce5de8444cf09d15c2680c08a38749a459. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR8E41728017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e380a83afd1281f885a6167063f46b1fa62696367e1bdfada19dd75a75a4cbf. 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/FR8E41728021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe36a4e0bd634ad3f7590687ef7217e6095d4a6c75f46cff1fe25d8e90ccbc. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/FR8E41728027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c5c5fb0b9396ecc4896b7ddf38740758123fdf1a2cfc4786817da8a53ca15. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR8E41728031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3d0246a542059fad48a3888681f3ae28059c978d79a8fd6926a3749ed3fd8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/FR8E41728039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83a61687db8ebe51149412dae3fdd1e9663ea7547bf1f192d78ebdb5299a76. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FR8E41728043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34c7f81c9d427e50b314f2c8ae16870bebedca5411e878874896f5441f147ad. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR8E41728055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614df3b26fda475e0ea24266ee69b7869ff7f56b2de7ca233f9aa74238c1c2e1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR8E41732031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875107a9081c7dc58012bdfd42195f1dea100515f9f4dcaa1fb3d72a19b8d6fe. 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/FR8E41732034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6614b252682e18fbe34bfc7125b41a44841283dcbade751e84900b43e3c0194. 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/FR8E41732037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84afc5481c7e90e3ae05cf422b232f895dd03fe300a76b76148d51a67717275f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR8E41732040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07193abeadf8ad5374ceac928d8cc5ffd0637f04ebf991f3f2ac8fb5b2264ee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR8E42500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2b3af0ec44f8431c0534fc7462f0da05c2a4b1fc677fced9e9cc373ce2be1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR8E42500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6ce81732fbab0d0d1f1e5c9d5a905b8df2c8fe93e025286d519f5ae2b338f. 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/FR8E42500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c7e9929411b29e4e74cbedfa5af5881eb77aff4f3d62d8f45151fe5d63c0c5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR26F2500993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05438276bcf4c9531ed9e8d116720b7b68b6cf675b53635b04a62ac84062912. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR26F2501047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327de1decdc49a737e44a2d56a930202be5423ef24e8e5dc271494e0e39af8b7. 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/FR8E42502439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488046def71e7589469829ca408d33841fc4771297aa4c4fd7145a48b2c2cd0b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR26F2502572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df6e3292a6f60e885d4f9a15c3f78111c85a75b8e9a02df435ff5aba869f10. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR26F2502592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4bc720e356372491d187d1354dc7799a793a30fc9442bc11a3788f0ca84be7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR26F2502763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba96516280d0a019d3c6e654d8dc7eda74ead12dc31a1740ea5294a354bdad6. 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/QM6P42444653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2bc8cc360356cfcba26ecc4429d315519859d79c9c9c7457d29c44a2898e08. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QM6P42444663.