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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 0xdbf263ece4cbbd5d044ccf4dfd21a463c0d72bf8de3065d439da9c9fc00dd513. 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/676191d0-03ba-4e38-a33e-f9e6f20421f8.json and https://artists.proofprofile.net/proofs/artist/676191d0-03ba-4e38-a33e-f9e6f20421f8.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 0x49402c91f3af7461fce0af983acd1216824bd61cfa0c44ed900a65a01cadef52. 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/FRZ111000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1b0a286a3cc7a7657a4aa83b5a9d250f09059d1221a0ad5eb40864b03ed1e8. 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/FRZ111000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f6c5968246ffefe2d9a3d9bcb7a80471b677c0eee8b0a8c7046794885d20b0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRZ111000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7efea794647fd598b2be41294812eda96a581de273240ebfebf0a1894d7c5f8. 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/FRZ111000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84272cc43abb03c6afd8970f14913ecc24a4de52d788ac44c9de5a4fc0fb6ce0. 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/FRS949701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05083977be08a848ef555a5064915b0c18b53af1839ebdb4c8070ffada9b44b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:04Z), 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/FRS949701050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c707c1bb078505185815a3ea5cd2c97d98562d1b262860ab6a9c2d67a5e2a0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FRS949701060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f458fe1c586091013216cf501611a2dc95a4aecbd7d17efb445bd6df59e96d. 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/FRS949701070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3516a1197e3de36acc15ab7fafb252e714af985e3b92f822fe2dc8d1597359b4. 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/FRS949701080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc7a69d3fa872a1a9bb2a137fc8c09c69615cbb3c66963413654a8434ef0e0b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRS949701090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0774ca65420319dbef99772288f06bd8b0dcf135d3588458cbc0e4ab9de9ed2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:50:12Z), 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/FRS949701100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9e50fa8112ce8a7bdd184ae5966e93e3173349cdef2635bc4ea93651c355a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRS949701110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5495bca97e32e6f77c88c2659a32f68d06a996f81c327a9a660742fbabdfa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRS949701120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28553ad66a6630a06e4fe917730374c0c5cbef3f87297acefa26d777f3e2d885. 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/FRY680006540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d9c126e88e34d6a14ae33a8426a4b37ad142b5a50bf6a455def7760d03722e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:06Z), 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/FRY680006560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2f3f1d9e633b90af9b14d13032575204ac7884ec093087c524d9850d89f784. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FRY680006570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78787635ee3408c224f759eb04e4d180eb1a4c388893ee6b15defc0f2be5ff9d. 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/DEZ650900897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52340f1f71086ee448fa9c091c3182d260d6a4e96b7d90a220656b66e4076178. 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/DEZ650900898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf21a56fd43d3b3368d79056146123a1ed657d637f1c91994070a0af71e6d2d. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEZ650900899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48e3945f6452339a7aac3dc012d0e8d3901415dd772086cdebd8bd642ea9533. 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/DEZ650900900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e4fd6e20877cfc8da29f2964511c361a5c6a77fddc5169f794acb2e1be6241. 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/DEZ650900902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f438223d2fbccde5c36a33dcb584c4581b9f08c06364682c0afa013dae3dd. 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/DEZ650900903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0842cb0e836745aec9433854e605f70c3d185a589fa6575c9bfe5414277121b8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZ650900904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf373a82370154801f4a509890dcc563dfa9c7ce96b1cdbfa6acf91d910d14bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ92466446.