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 0xe5ba965528567ce47a4c1385facedeee84d4bee129104b012a236a1d17ab8344. 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/b7288727-8c8e-4051-a005-e55fa716f7ac.json and https://artists.proofprofile.net/proofs/artist/b7288727-8c8e-4051-a005-e55fa716f7ac.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 0x3d30a4fce14ca4696a02325dc6f0edccf4d241c113cca558994589ff7b85963d. 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/US3DF2076869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8426e6e931a6eb66d9a6d7e00d2a91c7493ac3a3b8fb186827f322511e0cdc2. 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/USANG2166372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41499079bd7a947eb06ff2e603bb584ee45ee442aa46c302406317c15d4f7bb2. 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/US3DF2126306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79783d38aa2bea8d40fa84f15c2e019fb9f85a953e62932754db9aa0b00ba729. 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/US3DF2114871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f70508277d36c438bc4b4d9677e91c91e6ae9a2292f9dce6c7612266483739. 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/QM3DF2148543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45d794495d129b3dcbd1f283f52a27ac89b189e46f5d96c8a797375b91e9553. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US3DF2238112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373cd21a46840cfbfbd368580860f2c1663b82abb44d29975b3c33d55f62c39. 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/US3DF2258408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a342bc89972c5508917e952973ee4fe3b596ed869bbed6c869a84f78d0f3e. 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/US3DF2258409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d1e4c52aeaada2212541407b6f2ffd52a44021a9e00419fe951f96e027b266. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:00:29Z), 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/US3DF2258410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2673c699b01f4485f2ffda738c8b6d05b1568d46a06ff361e93ec85f1afbbb6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USANG2202429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98be1896cf953a86dd9c9ee4784ae98653dd69fd744b14b6ebf8ccc10ee0ec1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USANG2210775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8df727568e96a483db92d105255470b86ffe24ddf2dbb93dd3ecff17c294cec. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DGA072287622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db9ae66f7d4032f827a5d46baa490fdae75997a44d8fd9ae29a9c12b8d8c61. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:31:10Z), 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/USANG2299241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b27ea858e856e4fb7a07ca3a7708f973a114689f8d405f2d384482fcb7c2591. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEQ022390881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9240822b348666c9f4c5546a22ef5626dd550b30ae3a2d0acbf106f6d4b6b2. 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/QM3DF2211057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7720c915834dfdca4c128b2caf7168afb1d67325041d7e4cbd00bab791bb5f29. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QM3DF2265463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c56a6fd4400fb27bb8a5e3e8fce925b141f53a6aeb5c51a56baf86438fa16a8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM3DF2294786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b27c5d0e516379158e1407ed8971e25fd11f48cdc2f46e99403237c899d590. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:05Z), 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/QMANG2211521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8bf4aed3624dcf25189f90fc2360d02ca2962712da51cb04d4d3216c37af6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM3DF2293683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a1b8a528d2fa5f69b5561b889dbba4f64a83237989469d400e3d14b7130698. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMANG2223478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3592083099c986f4d8e6a66f1ab8b7502e3d7c6e659b74e76fb48fd8858abbc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2421012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d56f9aeb38aae19ffe07cdff674a59621b6fad72c15e440d297944517472fc5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2434844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fb6289a5e372799a96b3b20c4f0499cc76c79183bc2aaf6c9756e920857827. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/US3DF2473466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21169e74f2af2a909c255d0db55cd4ad1c599d99c6ccc56f551ed1cfb572549d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US3DF2473484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099510f478d17fb7622de171dc434de0c52ee7eabc1b5742dfea7b0836c2d38d. 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/USANG2432004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745f72753ef76ec94539c8c0218e54b4d95cfc8ffccac99257c35977bab486d0. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US3DF2540692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b600b24bea8b7af285ffe57a3a314d666b83d079f80ab55c3cd23fa48d9d70. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:04:49Z), 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/US3DF2540695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b644f19aded55c4f4796f436699806fa8b7836252f88a0944892c2255ad3cb. 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/US3DF2540694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6545ae73e7167c609cfb955be40b6d354f2a2e9faca45a00c585b4f3251fc190. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US3DF2554341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a3adbdaa2cd399b363837cc9d370c9105f7872f8bb09b40a68ce39fdcf7aa5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:44:09Z), 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/US3DF2584386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89f0d79aa4a2771761198d0e29129c767641a26632e339234de9146b38dc545. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/US3DF2558117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858ee07a1a15b9bd8ff191d44fe7b920979b2caea1332ca042cdf89d17738f3b. 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/US3DF2599082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4607ac601b17a3d9c4b9dc00f47b6c787d5e79cd550dc9ba946ad9fae9e26f. 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/US3DF2564696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3bc39cbf78d2aa300efbc4179f410dc982599876d13a32838e0099d2fea7a. 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/US3DF2556928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cf20413437bdb98b932ce2851ac6081ac85aacf63755677cc197b9938debc8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USANG2545595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc0931f24930ff95be1c01e4b2d734086c9aff6d868e5d99be714e2d821bae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL4YD2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a1a61278bded52f7accf2e463fed94c8601b153b731f012ba31adc0ecafb4a. 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/QZN882184865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099510f478d17fb7622de171dc434de0c52ee7eabc1b5742dfea7b0836c2d38d. 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/USANG2432004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a418e5f59bd6ec0c58c46ab3b9538559678decf1d9571e82a3618d30ec429c. 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/US3DF2527433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a649633b22a740a35ab0d81781f37eeb4426f9e9d44ffc301594250e842bc87. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US3DF2485532.
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 0xc79ed68240a45f1feb1b00a4dff2e43db2e8958e86959409f2d7017490591166. 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/USANG2404667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581c39b3b2464cb4970521151c426a108bac7d3264c4bc707d5d2f86febb4ce. 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/US3DF2460959.