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 0xa5dce7646ef91d0d109d282045e1a8266014d310e97c77e608d580db11b03269. 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/70f451a5-1fa2-4bf1-8772-099f61bcb3ff.json and https://artists.proofprofile.net/proofs/artist/70f451a5-1fa2-4bf1-8772-099f61bcb3ff.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 0xf5372b885944e7764eb8db1c0f4010ce5c8ca3ceca15640670ce392b1cc14516. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR6V82391880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354a43e64a22b2e0ddeb9627490f53841bdb052b63f040a6d10b8023b2cfaf1e. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR6V82391881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b38af4b5ceb5cd09d71c7bca4f39bee25ea34958b6d11aea913e07a7b7bee22. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:24Z), 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/FRX872290412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe301475a932dfcd478768579d64c616fedaf41fb2763d454f781e52617b4b925. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872290416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36983f161dc123f22d91e1ea88dc9635210c162c8e2c329e8d9a7d7fbe59af8. 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/FRX872290417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee4ca166954a7dd3f6b64005f62a830aedc702d34d5382e7599283d508de81e. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/FRX872290422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e73394a186e163b2b906b6d24a6b987be7b0e1c0aaea2c038d84fe8f2cac4a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR6V82527645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9be2187f9bb1828f2cc1f07f6d549b9458eff7ec52900869789f7fd1ad19812. 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/FR6V82527648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55ec3961caf6e54c5e111a1f03227ffa5679889deba53399df6e535a69f907c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR6V82527651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ef27b0d4b1fbe82f903a8eb45b4ea87a170eef00dbbe16d43401143b2aeca5. 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/FR6V82527653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01994e42e6d6b10d8356e5275f09b56fedb91b513cc73b764ced3bd17becb35e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:28Z), 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/FR6V82527654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d48948082973f1f8079452ed883410efd6ebcbbf808c8d2b5745ae9c650e6. 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/FR6V82527655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0fcaf80602d78599853bc5db08d629b71dbdd49ba610ea975e2b85dc11be3. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:53:27Z), 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/FRX282234990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e8e553a4ba595a5c18bdf3e6015d627a3e1c0c9f8272f90288742580a9e807. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:04Z), 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/FRX282234992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e2f358dc40032345d2ef1f4432241056b45fab1c41845bbf6c5db4bef4ebaf. 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/FRX282234993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4f10a71e52212cf42189281dcb4b752c2ba36240da208b9bf614e2c88825d6. 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/FRX282234995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4c9b20606b0785d75105b4a5be0fe084891e28f62716cc7691d705ea7b40db. 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/FRX282248476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90cc2d85b5beee1768ab27be9b7620cd2ad849bf4128b680b1d9f8808367f1b. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FRX282248477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07800fd298aac1db3349ad4d8e6faab4e458bbe25ae59349e711a85b0550ec5c. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:59:43Z), 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/FRX282248481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f82e5aae7465e0c418aff65647fe73bcfef09deffadfd11a32195fe67e13ac0. 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/DGA0P2338671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfa2427632714d10e01da286b7f89b4c2cbf599ea53756c029c7f053565fc69. 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/FR6V82539513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75175d9ccf456d790d77d0ffc66436709fe19b5f96b1249bdc5d40474f9d4dab. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR6V82539514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793ef44808d72db250cc59e0ad643e3095d215b4e109278295a128637b9ba3f. 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/FR6V82539516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf35fdf4a3bd6005ace0ae2229bd82f330deb4108b79b076eac041f066a67e8. 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/FR6V82539517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dbadc4d977e02d2a3a59120d0713a301a2f09c2d374e6e34810151b4e51f01. 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/FR6V82539518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3cb7c163e977ec6988f18a1cc30caaa37ab27e747ee08dfc03767a68ee4137. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:27Z), 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/FR6V82539519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b948f041182c6c1e1363f918619a64739264a04c4c04abb76a4ae620bd3e874. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V82539520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c4c0b0ce35cf6b040346783b00482eb4d773d26feb69ddc9ee75fd39a81461. 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/FR6V82539522.