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 0x9d341972521490e8f69219aeb78ea98e5950817a1ada085f9d3fa67c31e507e2. 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/fc135f39-40fd-42d8-afb1-54c3d8c84f4f.json and https://artists.proofprofile.net/proofs/artist/fc135f39-40fd-42d8-afb1-54c3d8c84f4f.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 0x1d00e642cd48a09559c0562fc078a5caee3bd1811fdf9f9f8e796290a1f1c039. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBSMU5544457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44699e18b70fe6847aa64081e87789cbff994be2a410023110cbd51a0970d73. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GBSMU5961943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc3ce5540e9afe459ddd5ab01ca1025cd3c2f5329b72259462a3b449335596f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBSMU6043813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3a8327b7f2385b13274cfad2436bc3a364d09cc5358aa19fec9879194ee8df. 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/GBSMU6060519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf074fc94300d4371b11b4d6b79f6a46de0490ddcf6100c8d9615eb513b6e65. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/GBSMU8964814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826fa3b919b0c7d6974b371fb15ea5309d5ec9ea6cce6eecf0452b6ad1b10056. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBSMU9518499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f82809618631eba407992516fbe71547f2d48a7d0e69783e6c4321504a3a311. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:40Z), 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/GBSMU9518500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4fc4fd259a785e783261b7bdca04426305d12f7f5123d31f93aa9f82c2d06f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU9518501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b8ffd134d65e2c451f8a7cd4d0274cede537b85c8da862a30e63fb9e29f9c8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:00Z), 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/GBSMU9518502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3380e913b4e599f8980c5694ffd3eaa99834644f1d30cd50e6de2db1bc14441. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZMEP2120046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522f059076fd6642d7bad966b2819b7c7690b49efabbe23ec0f717fb27e1e780. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMEP2120047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc595efd5daf269a4f7533e7e2fc824150a734ec0bdd6c85739e74b235195e2. 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/GXBDS2419250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f0539d7a3f25ebe714fb8b4f296fcf00b3005239e0a0486672f18af1fd8ccc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:07Z), 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/GXBDS2426838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af94b19d914b245287c913f9ab8ca9c05f66e7b76ce0f8f5c2c161b4e251632. 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/GXBDS2473290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04da1b224ad9dde29dc28d1393e9a1c0b1ec53f77311695a63c9c3fc8a2ebf26. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:25Z), 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/GXBDS2491432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77688ad566a0a1a483260907bc48bc4908c563f3f1c71bf6ad7cec2e960fd094. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:26Z), 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/GXBDS2474579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27207fef4ae9a4df44f68453331fca3eaf3cddf43f481ccec09df4ecdb06a0cc. 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/GX5MY2489948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cc578d6c985a97b95d4b810de390987f76c40ea8640f1ee44377f4e052b480. 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/GX5MY2436500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c47314663b9381ee2a414e87ab5e03f4aa5fd7b8276252dc3bc59adc85f686c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GX5MY2418655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f144346bef3d85a09ac0fd9378441633bd93fc5e04a4d9282fce41d9c0dcd2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTBC2429637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc585d3df7f76901553aadeab4282aa5977d8c731f6362847a68a6c852ded0556. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42538662.
Missed My Train Stop & That Was The Last Train
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660d94e62b9b4fcc45be4e79c9ea80be7fd347af478ff890570f635c86b63d45. 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/QZRP42538663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2776bec0e7562c926f607e5734d2e5b01c252ea743b79d84a3503f4a1cf4d66f. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:55Z), 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/QZRP42538664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ad835b181180a4f56283605b6b61cca435bf0a9434c7d4afd16e65103b5d0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZRP42538665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d2b0ccec7589f3a3d85edf6c27faa5a48d6bac81f5ace05bbb7bf240c57b5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWFV2542559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df6b416a9f2b40b0154aaaea47d25f6a568655579d812f40d23feb984468335. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFV2542560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9613cce51d9e414915d696fb8ab952fca1533d48efb173178e76bfaccf2ff3c2. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:05:11Z), 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/QZWFV2542561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbb5009e651586fa43addba1a01af72958c8886835761dd331a9c3d0a7343f3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:58Z), 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/QZWFV2542562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e31541233c64a8a95c23f5dd47a5212c0937af3b09fc82e4f519bf90be4796. 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/QT3EY2575302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c6aea71094782d4ec87ced54f8cadd299b25e5ca7ee43d9ed450cf9d0a61dc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3EY2575303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a4f6f67d593ea32bd10937a58f40f80d047e8d5883b2db4f30bde1c58d4e25. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QT3EY2575304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022d1fef5cc624b492242ed8f458772aaa24887465c9cff467dc04db766caf9c. 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/QT3F22589275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd613ee3d8769239e76114f95a9a26e7f7fed37858186a7e72b0f16b5e3e7bf5b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QT3F22589276.