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 0xedbc2be8ec092aafe09105dfe4bad945ef2bf176213c256b4d353d3256a2d54c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84c002fa-73b2-4337-9caf-8b8846bc1d92.json and https://artists.proofprofile.net/proofs/artist/84c002fa-73b2-4337-9caf-8b8846bc1d92.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 0x9caabd8094a594dbe8867b155f0acf19f012db4cf0d3ee4d758a370ffb36b0ff. 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/QZHN42538905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6b118f6407b2fe70965b60dc7b5f32619e102c37fc6e3fceffb4a5b2750c04. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZHN42538916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079bbe9d7ac329bfaed3b492c748bd786181992b5d58792ce960267c557c5f53. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN42541256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1778cb04b7055d2c3ef5f55e3f3e50fa5cbdf494d1c3f028407275fefced6ca. 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/QZHN42538952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d44680a5799c704478c7219ff0aeaa2f5259bf63f8af647a8a1edbbd1f558c. 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/QZHN42538954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b72ec464d8a0fd6bbf6e401d67e204ac9a548f575010d54fa209a1ec6035d0. 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/QZHN42538953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b7901938ba8840b20389e5976e2ab0259876533300e39d08c88b0cb8c4c644. 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/QZHN42536686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652041c4365ceae89520f37a8a42f98ac7f3842b1a6820fc69c94eefab052e99. 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/QZHN42538927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb044e46ef0ad1a44c45fc09cc6d6db37a73c2ec32bc5f9be20564bbbc78958. 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/QZHN42538933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe901f7e657d3b723052caabd5f8bd50fe9369cc1a75738fd3e9cfeccbdb09e6c. 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/QZHN42538951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab04eb4dc76bfa073aa415e350189e1fbf5d5180e6795421ec5b5407aab59ec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN42538950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3848d30d503e2c1008a84366618e37277a9854dece88ee1ec1bc9b5eac7e80. 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/QZHN42548189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2257fee28ae8d4dd085b962aac6952e2b85418baa7ceb0a4beda7aa7278714. 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/QZHN42545881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86abc688e863f227911f74149589476e660e27bec0c34bbcee21002dddbab68. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHN42550302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec53d4fbfc87dd19c00e755fe64e8615acb2b8f86d820d6d087838c886679d73. 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/QZHN52593343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140d9891b32065ebe6cb19072b52db9573bfac29159df5c8bf7a0905372e7036. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZHN52593350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479881f1da85c5243d45411039040f1fcff8bfffa636656ca0b64a65e02caae8. 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/QZHN52590317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e38630aeaca3dc1b869e53169d2ac60c1b184ec649643f47d5d15dab0a4cb9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHN52591978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bcca0edae0b8bd2562652db7d62854a92881dec3d4c3d296ba338a1afbe149. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZHN52593347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f80b1f84425ffd0d3f18bf3888d696791039e056dddc56bb3af09de2651203. 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/QZHN52591941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a1e2802370426005a096d153f1bdcdd7ab3b914175e0d433509471445697f. 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/QZHN52598481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8ee83dfe5a2185e7b620358c07883448083627ea869da3068f602a70180638. 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/QZHN52593349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12df5d2971918b708d18cc1f63b8d44af741f611e10bb5af78d633fcdb791a3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN52593346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924266e167afd27475588a555ac4a5095b3d4dda5d87f3b3bad65b7183d9385e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZHN52593351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217389d98330060daa9250f17acdd2e20c144a10e5a2405883cb66128b4a8f06. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN52591950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc19530615dae7c5d25c41f68e32ea7111117d46634964041bb8936a3002ea0. 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/QZHN62539583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0630fc730d64a1615ae3fed4827e02c6f03c4a273ef382c0a49fdaa13ef4758b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHN62500334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02359ce9f222a51e22e485dd3da25ac2d6c8d13e8cdb49bac8c137f29189646. 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/QZHN62539581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521801baf800d01b3762352321c2c4b29e97663bc85d55060b708d05faf3a3ff. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN62534091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1366d189dc084e13b1d365546f5b4a05812a6721340415f58e0345b6093f34eb. 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/QZHN62538148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56030669701ef6191b88a5b858b203ec0e4b265392eccd16842f3d232cda02. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN62538145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f20ed656ccf2aea01867b05dc786997620f9c13445f2a5649548471591783df. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN62536353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8799d4777014122520bba0474f24618d08f09be2d9c24ecca1aa5ff55102daae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN62538144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25c6d4e9f46f0c0a3a58b3afe647a5af8e9db760ad16d9f59d55ee37f3d1541. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN62545648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e556c0d87f05780feb73a0e5fc18441f601f76594b8ebc93eb363063e46c0f8. 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/QZHN62541230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99012d87e6f2061973b49a745e817a48647636f1d28722fc06a325c57fb05601. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN62545644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe864e90f4ea1978a8ae55dafc8cee685cf5c168740d816f35449b05fb5a4462c. 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/QZHN62542597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5ba9dbb1576d2b3d8a0fd6b2c09ee17b7021f4cfe99408557f5f5174b3ade1. 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/QZHN62542598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb881a1da36191898887d6ad36b99e7a4ddc3dbe5ff380d3e1852331427ba51b. 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/QZHN62544042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407545cca281ef2c955cef14ee9654b594d2bd73e6c144ff765b73a9df9df07c. 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/QZHN62541339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3567d9db8b5ef10cc7a42c72547676d27905716fab2d98b5f8d41a9d4a59827d. 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/QZHN62545642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491056791cb4aa46ec39d8c444345291fc64305deb4aaff25526ce80460a5fa6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN62541234.