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 0x38e26f646b5ce4d7ab1a2bdee86d61243c5a141293deb97c2e0f61aba325dd06. 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/e645e35c-7fbd-4bd8-a925-c2c39a5c98ef.json and https://artists.proofprofile.net/proofs/artist/e645e35c-7fbd-4bd8-a925-c2c39a5c98ef.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 0x637146277ed1663fff04cf2f767d75ae7be6aa3ed1ca12b5c6b8a980c7c64e45. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPR502409020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecaf8f228dab2c0341e8807d63a3d8d8ad65d229c44cd29e07204fa50999bcc. 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/JPR502404104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66809e18c15d0d053293d4dbe560443b99f49ced327185d960e66430b81f45. 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/JPR502409010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637146277ed1663fff04cf2f767d75ae7be6aa3ed1ca12b5c6b8a980c7c64e45. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/JPR502409020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66809e18c15d0d053293d4dbe560443b99f49ced327185d960e66430b81f45. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPR502409010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6feb73907effb530bf3e15e634f8e41736556c6c4c5910b68827e930562cdc4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPR502409015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f1033fcc674b3aca10c6ae38c84a9defcba865d6d61f93d6e9c97f94a36f6. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPR502415538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae564de4bd904ee6a7a4682d99511f04e1128622d9c3c19911b9b50e50f20b84. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR502409012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19fe96a5d2c4a2a9a381b094ebc8b1f26253e2e82d012c44622c0d779ae025d. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/JPR502409006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43dfa9f974e38524bb8430ddd8607df3588a7428d39b208d2a49b640739f90. 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/JPR502415529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde00a80098f284bc24ad6866a06774feccaaa52b1fe3251e51538641512b2e62. 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/JPR502409246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d97a8aa7c7f28f085edf8d4f4f024fc1ea620758210b2d24b4261cb73088fdf. 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/JPR502503624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20caf5f8cffd965c6dbb5f37387afb03699cf0acfe99d787bb6f14fe03129890. 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/JPR502503620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40839ca4eb8e3cc4eee9005b6fbb74ff062835fc085cd53cfc23256735c3ec1a. 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/JPR502503623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6094e3a8347dc03a312499dddd71486c2cff370b3f8eabc9553ff3060cbe280. 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/JPR502503622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40839ca4eb8e3cc4eee9005b6fbb74ff062835fc085cd53cfc23256735c3ec1a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPR502503623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbdd08ec468677c14328670231a40d65cf8dd53c2ae2f2e751a094f225f9607. 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/JPR502507098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a5b45e9e00820848b8d5b6930aba646d0224b8927f9cad2d31823e53a13b4. 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/JPR502512214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a5b45e9e00820848b8d5b6930aba646d0224b8927f9cad2d31823e53a13b4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPR502512214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb449ceb7e6386ca626bb11fe72e39d96248efd4461de7e916525179d63b51e2. 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/JPR502512213.