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 0xad6903ed8e8eed0fda53aa89b208c3e612db0ac506bdfc739d91fec4584b3822. 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/f9c55c68-a898-4265-be54-713f5f2737f0.json and https://artists.proofprofile.net/proofs/artist/f9c55c68-a898-4265-be54-713f5f2737f0.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 0x128617ae747e546ed1c31b712db3a9d6b77c08228baab35a3bb6c1742cff4d26. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEPI82300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940629bac077eb3b2e7349128502a1cbcee99db6af38c2794955fd2273332f14. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZPXF2120132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd58aad6222e4a60fd65cd8f06214bb6674da0054b15b4708665286af37525b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPXF2120131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc94040742584202061d43d0ec5b14f20f9cf6e4d9738eec60569996533e38. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZPXF2120135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9cce4b7f84e6b983397794257360367df34af8cdd8365f13a0f058ed4ed1f1. 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/DEPI82300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600973a5562e31b50cbcdcbc764c3a316bd2e4b6bf2c30d647564e210479e67e. 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/DEPI82300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1889e021116bffc0b9d2ef84e27d8ee70ffc93e071ea64968a77df357d2cf5e. 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/DEPI82301110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe026e54a502cfaa5d010b7e59c0a72e4a65d1d3a9a156baa76df1d1d15124b95. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEPI82300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eaf84d250917225c5fb6e7bfc6320011b7dfd9bdc9e8b86ceb6e77d669c51d. 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/DEPI82300583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a32892aa62ccd9e3c081e4df7aa50614dbefbafa1a20f419dd5b05209add93. 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/DEPI82300559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c6d6fe73bc91c04acb2adf1b700811ea01405f8cd1701d9d34ee1bd359715. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEPI82300557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6217939d51e89575bd499b9b5952c6ecbb58cf8d149da4ed14b8a0a84fa30200. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:08:53Z), 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/DEPI82300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090cf974774de3f6404a53b47e7ec3a7bccc894ea7109419f522c8a600f7c62c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEPI82300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b59b7a86683118349dbd848f6f86d5cdc4122966d074fe81deb49caee0e88. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEPI82300579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde999594e0e28d057dca27ad3a1c9c38559225d331d8e4a8980ca9612e76cad. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DEPI82301109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc5c124ce71d01334b85ba4edaae3b4774c5a88b2a6b3ccc8806ad67ff01bab. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEPI82300558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa710a1c195137829dbecf9a6c1083c5baffa3e4d54294fa4e1537dbc735847. 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/DEPI82300505.
Cheghadr Tanham (Remix by Emad Larijani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446ea7bcbfd60923468a0854ead97932e4ece13ed6f8c07b367773a1461bd8f6. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/DEA372006411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa9c215a0edee0e8ab8275d02ed95557a788461d7aa043a77934a1bfe5ff83d. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DEA372006953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09af50523e1f6c898872c945ab1338f2f2c91b3d318991e74a468d2d56d4d78. 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/DEPI82300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3490b180de8b4ef272e5e87807a047723dda2be82b26f3ed76f35fbca0af7ce0. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:56:47Z), 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/DEPI82300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e3f29d1fa83b0309506436148d3d4336e0a68dcbe71aa4d5e8ad86969e8f4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI82300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d5e73cf5bc928e107d5150936e278639a464241a4401a17eb609e5a1103931. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEPI82301818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d0f9ef817d2369fb2506ba61258a4452ced07690464bffafbf1e1b74795c55. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DEPI82303678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa44f2bde6a84e9c52b656acd080b30d31c482c7db04d8382e5a5a66ffd4ff2e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:48:54Z), 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/DEPI82307617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98ac79a43b04e3c82748011c47bb73d271a55e5303f3881263b1b87eab19ca5. 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/DEPI82309481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fad76d1d104631810c04614c38da924ddf30df84d92c8e59791d9d46325128. 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/DEPI82322406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d78eae8abf7fee1b28752e0ce49150a0a486090bfd95eded797a403f67c8a2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:10Z), 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/DEPI82322992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539bc4f2002372d7c9b61a5e14f53b89b173654a7a428ae9f19d7f845fa66fd5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEPI82325758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bf938e2b13e5aad380e83129b6409c8170c4809bc08c63ec95f52d2055a6e1. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEPI82431269.