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 0x22ce2f766fd4d651cc28e12c3916425684cee9c99a73473e1366b7c5ca3cb63a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83066981-9884-4fb3-b59e-3bb519b083ad.json and https://artists.proofprofile.net/proofs/artist/83066981-9884-4fb3-b59e-3bb519b083ad.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 0xfb44f04a1f579e60e3225569b4e6c83edae5388eead24449cbe639ed5ab13c86. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:34Z), 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/GBWUL2201135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb44f04a1f579e60e3225569b4e6c83edae5388eead24449cbe639ed5ab13c86. 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/GBWUL2201135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff4c9aef049b65f9412ea5142354865dc7d94cf51382da583fe02b50ff7e9da. 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/GBWUL2201227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b0384586e282e5036e8977607ac2717468a5a135b19d154180aa3d83fc1567. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:38Z), 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/GBWUL2201290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb423ca3fb8a26aee3ce454d8f0cc7011efbb2361d1c351593ae1043719d30fd8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:49Z), 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/GBWUL2201280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e25274c349f9d63671e64fe68d45b677ad2842ffc8baa8637a74546cecf490. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:41Z), 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/GBWUL2208431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a60b0e3cf35db4db83f1c6cbbc206bd840a307a35b356332f63c74ad0c7f0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBWUL2208530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695bcfcef862a4e6b80896571373b88f39c349e5eec8d08be1f243c26b76076f. 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/GBWUL2208553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a60b0e3cf35db4db83f1c6cbbc206bd840a307a35b356332f63c74ad0c7f0. 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/GBWUL2208530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695bcfcef862a4e6b80896571373b88f39c349e5eec8d08be1f243c26b76076f. 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/GBWUL2208553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa09f0c80d6410f7bde6cf33385ac669d4135e1b1d19e2f0cae51a85699ff30. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA0M2320727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31344fb3fa232c2e9e4ea4c96f6fb5306054abb85d01882f24d541ac9e04516c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA0M2320728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa09f0c80d6410f7bde6cf33385ac669d4135e1b1d19e2f0cae51a85699ff30. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:10:56Z), 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/DGA0M2320727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31344fb3fa232c2e9e4ea4c96f6fb5306054abb85d01882f24d541ac9e04516c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA0M2320728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe962f54d5b96c44bac1c2a784fa33bd193ad6b321bc4c25fd49e0628d3e5a8fc. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:11:00Z), 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/DGA0M2320735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd98e6488f96eba74fa4404a5fe349d397e57260df4a5b590c48564341c3c177. 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/GBWUL2214120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c25ac9e7002c028d718e3e100c3345d82aeae129a67f35dafbe248e2294006b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBWUL2214136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c8d9bdbe86b803111540f2e75c5cdc6e021cabf9c34384601bb67b3193c324. 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/GBSMU6664612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd98e6488f96eba74fa4404a5fe349d397e57260df4a5b590c48564341c3c177. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBWUL2214120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c25ac9e7002c028d718e3e100c3345d82aeae129a67f35dafbe248e2294006b. 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/GBWUL2214136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe362a87895491db9413dd005d5a411a06a070136c3b2425cc9677badfc291214. 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/GBSMU6756807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e7da1bed2dbcdc253daa0da3ffedfece8c73190a538c33847a9dc98b3faa5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBSMU6756809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4466481aad9401919b65f37cb234a03a7ff36011317ec643b56f32627f8329. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBWUL2224433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e7da1bed2dbcdc253daa0da3ffedfece8c73190a538c33847a9dc98b3faa5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBSMU6756809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4466481aad9401919b65f37cb234a03a7ff36011317ec643b56f32627f8329. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GBWUL2224433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52745d8a03e3da05e083e97b0a9409add08134c78574d2a585db4851b6a4a6eb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:33Z), 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/UKXN22309215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39038708ce6b8057518bc4899ab299c53c5fa4837438a9b555a756b74c6c8c90. 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/DGA0R2474553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ab0582e88a5676c804cb24c866328777d02b172cf7f1500f220e5d2372a5de. 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/FR10S2527119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0132d7a0514c701656d5d03ddf2cdd4a3bccd07ca96e379c7524efdf977483. 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/DGA0P2434244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8449a264e22eb8e76c8c18c594b8e7383feda2bcb88e179c41c5a64a6a908697. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:05Z), 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/GBWUL2210643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03da6bd3666529c12541f089f226c0e6e3150d24a0f0f16c31afcc945f97f24. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QMDA72594310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8db4cb6ac208db2049e22fd99164a6830594def91b806cdc05a1f023a8d04d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP2234704.