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 0xf1be4f17da51129fc759c5e8f1eaac3d998225b3fc5fd9968e3c1e4b9149f489. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8035b241-36ad-4bb7-8210-3a2a6c2382d3.json and https://artists.proofprofile.net/proofs/artist/8035b241-36ad-4bb7-8210-3a2a6c2382d3.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 0x199045e02c073d0aeeae7cdbe1fc798278abd780a2ae993a0d2e2081f06dd39a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/SE57V2411167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdb667161d8d30ba095429a4aa1eb9cea58a652de387dcc263fb6f77a30f7dc. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:01Z), 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/SE57V2412717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabda88a7cf859529b36d5489a26ae88d16be0e12bc32a067c96e666e8524e5f7. 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/SE57V2412742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8e41bd7e468d21ee87df337da633d392e561c8ad169a17f3ee3d7dd5b2beb6. 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/SE57V2412799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3080839fc6739e012979e2cd62574c757fc037e7e93b3b35a6c94564b0b6413f. 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/SE57V2412822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb43d990be2d2ea9ee7af4d636d538d10f422a498956cbe34246a8fcd7208d0. 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/SE57V2412830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3616e1d04ac0478f5735f1fec8690fe992775b07540a6b89b6fd309752af2db4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE57V2412831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a7ec4eb5f91385766d819e3c74f8d7c23d8a03dfca9b6061b1f1b4ba29f25. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/SE57V2500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fda11f4b5ed7385ee1957569c8cd620a63b0ba6efc19ca5872f7199839bcdb. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/SE57V2500327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdeee7c8c097946fb734344ec6e665e0fd488161f1336070662c9eb7a83e860. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:52Z), 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/SE57V2412900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900659897d18d5b4de9a69bf060680c5a0f110a5c892bb00ff445ea36bc4d21b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:46Z), 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/SE57V2502543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2bc1b9350ba80d57be0103c4833207f3e928f95a7eb2df247d2ab46f1e6a4f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:03Z), 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/SE57V2502554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8bf6a288f22005a12f812335bf33d22bcf52f3308b3bbb2292bb9e7b17e954. 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/SE57V2502925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65681ecc06b73c78e92c64e9140607d8acb223eb9b45175bfb6ef6bb547021b. 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/SE57V2502927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e31d2d408851b0c6dc3136d95411555c91a903897274505f43a91e681885e6. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/SE57V2502930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a905aab20f49c051ef4d2a5a88c6c8995a1c66108af63522f9af4d4f6d4489. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:32:03Z), 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/SE57V2502582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e07cb2e12c9b884947ee555829d17253baa69182d0816d081958df3a1de03. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE57V2502623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96046011e4768e1e89d7621ea10dae3131db6a58fa5df7abae2c5dd945a016b5. 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/SE57V2502758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bdaffa6fea1679dc8bdcd8978d6630c764e3b5538cbcc60dd761dd556a607e. 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/SE57V2503175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70784d23f349013a3460113bff399daf921c80d1cde7ad63153797b26b4da336. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:46:50Z), 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/SE57V2503181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb8009d672c85cf8505f3c997c355d1c7168a3b67244c904d0dd05540ceb192. 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/SE57V2503193.