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 0x7a0f1e23a56ce199ae1e732fc7ab7cd5e6eac5cf6d22850e9209343563ab2390. 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/bad33584-9bdc-491e-bab5-0efe86f198a1.json and https://artists.proofprofile.net/proofs/artist/bad33584-9bdc-491e-bab5-0efe86f198a1.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 0x58eed6053a5b678e16f99687de284743ef9e80959cb1984d11106ca1db68c2d0. 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/UKXN21970715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c1c91630284f5bbc3a70b4103de00cc0f8a5e075a79bb6bc6ff925056a850f. 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/UKXN21970710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9284b8278ba13a404be1e8ce19f06f8879e5eba2d1a45305c95d7bf9a0589fe4. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:24:31Z), 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/USATO2200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eed6053a5b678e16f99687de284743ef9e80959cb1984d11106ca1db68c2d0. 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/UKXN21970715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63968fda4d580fb2e16fcd664580d3b682feda478c3b157855f9d4eadacb0e38. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:13Z), 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/UKXN21970718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bee94ae4975b8a6e80312237a9a526cc86fb35c7b1f79d02cc5d09e80a6ff2e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/UKXN21970719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf519a27017cad8092699100076ac30dbf799995d3c9e60bec3c30f4974d6c418. 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/USATO2200426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9284b8278ba13a404be1e8ce19f06f8879e5eba2d1a45305c95d7bf9a0589fe4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:42Z), 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/USATO2200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d12b0629348e209517e724e43243cf5172b7d62fe222cdf136f584a9ec0121. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USATO2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d614598e719c97b39544a4df87dfa3e6b5da8f087c0e2562330a9c76d71edc. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USATO2200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eed6053a5b678e16f99687de284743ef9e80959cb1984d11106ca1db68c2d0. 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/UKXN21970715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622fbbe08175370b2cace2ef1b236ee477d1a4e573bbac5f62bad810957db48. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN21970713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdb75468b5fe0b2dd6a63233afbd4e2c40ff14483c95f6e9d5e41d901d3c448. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USATO2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f94e98aedb14955682123fbd3e0854b61233af9f6c7c142664759b8906892. 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/USATO2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d12b0629348e209517e724e43243cf5172b7d62fe222cdf136f584a9ec0121. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:10Z), 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/USATO2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d614598e719c97b39544a4df87dfa3e6b5da8f087c0e2562330a9c76d71edc. 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/USATO2200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c1926c7c555c32800983c6e7748b7a7191320e3331d3e23ecfe04286d6bcf. 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/USATO2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfba53e6f298d2879988925c1ce3640555c9ebcd7b22f8eb458b1012905b2bc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:08Z), 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/USATO2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4142cab7124e9e392060d497a5a87a6e7a3021a210feab24e415edecc41ff8. 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/USATO2400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d06b25492c5216cd57258ab883003f4b6fcd677c0b493782f6956d3e11f55c. 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/USATO2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ad625af9f1f5efb6c16a62f66bb58b3958de0021625124b1ba6c1af69f6f95. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USATO2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d42a1f680ae41f7ae281b9ef388b6347fc32885053e3c563241283044240c3c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USATO2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab42bb1b46ebbcc89f69eb3b3ff745e763686c25fc42f318ee63f5c7b08413d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USATO2400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1f09deb2062ccd3e20aa2ef8b9dae3ac409e41cddeb2a4e40eba4e61d8fd3. 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/USATO2400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52983293a8b86745da416fa669c77cdcede8104029d19311c0dc243cdead4db2. 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/USATO2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c475fb70f7c4a572179dd5761dcb309e671543c026621b3d1a5e331ee295f57. 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/USATO2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719116fe60d5f234510dd24178f6ed6d30f45a96a0a916ac605a9e3174ce247a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:03Z), 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/USATO2400155.