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 0x8a1440a2ea06939c6ef933eafbfa3f4f708b3fd603147418ba9d1b12f3adf9ee. 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/6fa5322a-dc2d-418d-987f-b77fefb65a56.json and https://artists.proofprofile.net/proofs/artist/6fa5322a-dc2d-418d-987f-b77fefb65a56.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 0x1a53c9073e24ebbb076644725e6273465dd0b2f09c500dc98178fd47bb606ecc. 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/FRX282165799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a344bc7580677c432af2f1b55c352621385fbbf31004ed8b66608956c2c43e. 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/FR96X2224253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc175e9c98d35b2fc7f147a8e0a18cbd65832ad526e43ed431918acb304367. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FRX452109317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec54f6c84d8fd5b2e5a485d844721dbe25b81ec5763462492a30c8a4a8f06b69. 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/FRX452109315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d8fa8737265738ba725e1b9faa81ffbce8f0f75e802b39c3f17b968a849fa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX452112033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aecab4d0fdcc0cbb3ba97479f4b9d7d504a4386787f804a2027243e80bf93c3. 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/FRX452112051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06432698154c9986992c614430b8893b9be8937b8e3ec5902513eaedda161fe2. 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/FRS182107745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8762043fabe48daf8502cf2aec9eefec5aeae387f9f4e29ea0091b7aff1b2076. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X42254083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d96347c90673ed892d88f7765ee0d5e7d44ab00379c6db7c60ec2bda64e14. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:31Z), 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/FR96X2225130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e805a0009783dc83127e2025402b03f6f37f012f6be46ca0948118ff28fddfa. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/FR96X2225371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdfc4e0d1f779cb962b8f8c934c65331eae22b98a643d84538c7056f02097f3. 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/FRS182107423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832e2f54fc17cc78231bdf16936afdd8ef952bea287ef99896a3ed6a7bf3d0b0. 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/FRS182131761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb471f6a374fe87ce2ceff8173fe5814810143109a891f7219b4563df547fa8f. 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/FR96X2225135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f25182f450d7ec84c656f802eb2fbe366f743621402fd58a0ee220d17ad76. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FRS182107416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a07cb55d1edc3d7fdf66fcc7661cca2ee62ee81ec39159d24b98d218578118. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRS182107425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc726f19a01dee0bc7872347b8f41594aeab26d3a3e1adad0677009f90548a. 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/FRS182107863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e6337fc3de6c7073d3f629b6d256ec9010f37964f1295f8207a6b255ab9da5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRS182107161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c9c472b910f15e5f6231e899a5ed1bf15d2ba2b295a114a47c112c7ac886c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:02Z), 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/FRS182131823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44794fb7b981ee975cf54a3c215161015518970c7e393fa03038beb3b30cc7e. 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/FRS182107869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a077787c9e56b10d69f3212520d91dc5060abbcdfb3a741970392dae7e3f140. 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/FRX202257047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57189ba39d37f47d68c2acc8a3023a5f367642b8ad0229d21bf7f1cad89ad83e. 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/DGA052257024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ac18c1fe284c8ee6dc460d42d4ccb981642feff20a4cc3ab871e492584308e. 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/IDB842140000.