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 0xf2956f511adaa87513427ef775d9d080d9b0f851c8a96460d794d3fce253d04d. 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/72b5d22e-de46-4b17-84c2-6df70884dceb.json and https://artists.proofprofile.net/proofs/artist/72b5d22e-de46-4b17-84c2-6df70884dceb.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 0xcbb5c8aaa6bbb480b54a494b56142ec36273ec1ba5b993c9324d9cd41823b930. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/DEZC62052674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad6ba50d318b9640a164ebed6d0091a408024dc0beba193ff1564e8f4cf5bf. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEZC62164895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753198ed0b210f9178cd90b474fb138c90615fe79f7949b3bc1ae1072e14cecf. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:44Z), 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/DEZC62182537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c393185ae6d24a884995502187afe96c8688599ed120333806e2f0cbc7d6ac. 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/DEZC62192055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5900f2a3ac0afa69aa23d3691036b4eb6ebc0e73fe8fe53113254068ca9872cd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZC62105128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9a40e7eff50e01257355f4a19b19fb5d3609c9dc091228a53725345b72d5f0. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:15Z), 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/DEZC62112767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4c947630c55dcce9de448f9ffa9c89604218a810741e974a376d0b6b163108. 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/DEZC62139960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ba5d50b53cef5f9f90ff12b42fe11fe3867b82f2c23271999cbf8da18d46c9. 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/DEZC62146292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2414c9f21f36f355547c3673f3f3837e4b6f4d54ee3801ae7cf62004361b3d. 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/DEZC62247545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899fcc1fcba7f6efcf17061f0877242f3946fb14355c64022f3aacf6f9e30169. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZC62264769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe219e9d7a4db3bb3d61ceebd02c2376206b364c78526911f271f017bd2fbf21f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEZC62276767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeac14baaacdc86524cf45b267f1c7f468a6ebe31aedbc65e3c056750b170ecd. 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/DEZC62290191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191fcd14239af2d744bd2fb771098345e89b7fef1343ec5f85b7907f1d24cf74. 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/NLH2L2200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7d814b388b26628acc93e0e39f366d3d0aa34f1b15120c411e968b967c3ae6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEZC62206672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abe7d4c005cb2f95ff573a3eeafcbfbd00cdeaf086bf808b7861242cc541ff. 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/DEZC62216330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f0f41e96dbcbb8af66ac68cb95dbb4d34bbc3e6422d42a99e5457158ab971. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:10Z), 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/BEB682300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded31addb5f7880354cdeaaad813c321aa01d65ef8e514ad7d6c6e23123566cb. 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/DEZC62338443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c24ce9933b35599409a69afda3fade47fb0438b0f071a8b4421ccc327d62c3. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:38Z), 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/QZMEM2397532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7464d35d147af9572f723956c82516f4b2c4bdd2cb7abd0657b05d7ea16d7ea. 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/QZNWR2398984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3b0318e4eef5b89e94dd670fb0521a52c62b10760b9ded30c9c472819df22a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:53:48Z), 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/QZNWR2353034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd242ae6fdd38f7be8b9aa41801a6ac120ea825ec044363426b5aad5b260ba4f8. 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/QZES72369803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f0a005913f76ed117902661eb37483558ce32355145f641c6f45ef1f806eb1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTAX2365167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eb5014511a1c1672c7e629181fcba930e5da655a836fba6bce73f8e9d53ea7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZTAX2388949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ce4d5d09a7b6782f48989e6c012a820b5c0d041d05c59e046cb83e13a04a31. 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/DEZC62378610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26b5a7f44b602c2b7e080029fca92599a7a6cda7aefbe8c591169345da342dd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:07Z), 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/NLH2L2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dc893c28794083dd9a9eda1fa9a4058641913a88e269949439bd77e0de3566. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BEB682400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c206bf18b46fd33ef3266932aec722f6f3a5e0d2eaddcc193e951976500acc3. 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/QZDA72407562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe475b58004f2a087845d32d9bcf40f0f957ba1c0c42e3fcb03042f9359f4fd5c. 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/DEZC62404292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5397e7067a779abf13edee3da298982772b168c8227b5a181c8e3e6e9f545b24. 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/DEZC62414315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0af935ce1a3d0a4744e8edcb033793fa884a666b20f7ac27e93c7109a5799c. 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/BEB682400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff282b4d7e98f4849e9ae1ce49ce68cd20a1355b4c569a16366ca5c8168a9f1e. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZNWR2423528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62e6c40e896b8d4c09168e8d26c55e26c93fb7dfbfb043cc456a772404a4132. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZWFV2443869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5a541a2df01d32a07aaafda5889b7ccd8bda3d5255761e08031c7fe3825ee9. 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/QT3F32401944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceaa70dde846208bb0b60053fa5144ec916aa6693e3e74917d663a7c0353a71. 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/QZFZ32573070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5a541a2df01d32a07aaafda5889b7ccd8bda3d5255761e08031c7fe3825ee9. 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/QT3F32401944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec69d06c8ac9bf89de71ccd5c954a85de6c84ce2a23fd0f5d9b48cc8e715345. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTAT2539686.