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 0xa6e604c133b4f31b997ff808ce1a01f8e337c1061fc27e8144d063a778150c79. 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/cf066edf-f0c1-4cef-8d96-908df6579f8b.json and https://artists.proofprofile.net/proofs/artist/cf066edf-f0c1-4cef-8d96-908df6579f8b.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 0xc5eee766c5f16b387597adc41290feff55341a63da8ea31e7d929d1f2784b909. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:29:27Z), 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/TCAJA2414485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7078ed8b66b94f57bbd1f29b9e76702fb98a23b705b6c26e0cbefad1d573517. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:12Z), 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/TCAJA2420876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5508a46c51909eb2837c15147353889d53d75ae40648c1e35b2aae2d0bd46c5d. 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/TCAJA2429686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53638f0aba4d7528b686672438a91ed23fa83d718762ac2aa4c85876379320f3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:50Z), 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/TCAJA2441405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dfd30477cf7b91847b373380f2389a1bf512d8b034ca5b21fb664af8d1d8b9. 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/TCAJA2448749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9f87262d937168560b24d40cce8f30be2cbcf1a9e9afb789cf5bab65d5fe2d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:19Z), 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/TCAJA2456941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455b9c670470800e096b481c084b0359492c259d258d3a2c3f6bb7e9755d326. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:44:25Z), 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/TCAJB2469584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b6228818af7e9ef9555087b3396cfa55ee937974df55b171f284ac55d10eb6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:52Z), 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/TCAJA2488840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e21e898947fdf135fd9ab0e850c50270cacf4ce26de18e1fd021ceae04d91d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:04:53Z), 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/TCAJA2494229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa4984641b8b32b4210abc06da1db3fdfffb12bd2f4cb83f9f66134d006813d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:27:33Z), 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/TCAJB2402471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5cd80f8fdcd4257815c1b9ba0629ff491e5d8d8fa8be4429989677fef59ef. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:33:28Z), 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/TCAJB2414939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be451d4eacff5172ce38d318f4cb61c7987966689a62ba41abb79bec135f411. 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/TCAJB2421220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118a8c83a3a462c96ed7a637be499a893167cf7b2548723bcadb1661f933a64. 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/TCAJB2441299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6a58da9c47be91080743ebeef45fa023e41524494e5ecf3f402a148945358b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:51Z), 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/TCAJB2451274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95886070a93f95f3f6cd87d2bdb6406b9a0676254cd9f8dfbc40ce3d8877961. 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/TCAJB2472602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6871708ed166d653d22be80768c54d6a635522a6a943e3ae1ff3efd9e0ec41d2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:22:37Z), 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/TCAJC2478054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e2b397c91b7c7617e981f6a8fc86bd40fcf06e21d3abf891f456f3e5c1371b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJB2478067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a3d3db595322970d4f5e293f62c27521b0faf0205aab3d085149a4043911c7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:16Z), 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/TCAJC2478100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc0c7565e8f284f40164242e8608b8c102b3bad228787c41eadb8873487ab29. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCAJB2478058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a800d4b4b60a4fd5a10117fdaf411d02cb4d38a11849f24570db9b0499855a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:53:57Z), 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/TCAJB2478089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d102982d70ceb84432f5302481798c5479053ff55ad1b2ac447711bb60a4e9e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAJB2478070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef58de932e4105ac4af2292be9975071cc19292e07b1378bd2b6ae36f24ae155. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJC2443431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7d6b02c4fb830080145ac7df6bec711167b93c9667662027398486e05fa416. 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/TCAJC2443417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff913cd855c2d2e312cee1422ac317e9345d9ed617307b3e972934cf1ba51d38. 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/TCAJC2443380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ee975455009c9cba75e249075eadf11299a094b487798b7c1aa8498ff9a441. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAJC2443456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6504e42985579a684d90b90304817864749dc41248763e68a3f4818fa234360. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:21:06Z), 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/TCAJC2443442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd43ac4a350b471e0fcb1407afb16cf64744d4a06b7af4680300a0193d0d637. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAJC2443386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d649b97303c0cff78f6e671be8326bf48e995997a7e5ba6e7632f32b720d67. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/TCAJC2443371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc3f4b5950938507826c8cb075b81b66cab33f79174486f01f19d3e6166a4c5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:20Z), 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/TCAJC2490323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5e9ede389053a9c5c6da9e795f2ece54a774389a8f2b8795f27437b5effe1a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJC2490356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4255e762414fce35d643ce1769965fab2b059c67e5f3a34968441aa98000e83. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAJD2490386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c90438e578582fe60047cfc1f4e2b9662c1bbaa2e1e51a90304d56ce42a690. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJC2490364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8757acd9583578db89a83dad43123cd1e99b3ec8a10bea9354cdec8f6127dc. 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/TCAJC2490320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52de761917f9f923de7b7bf573c041ae8a4966bbe350aabadda5d6cf375a076. 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/TCAJC2490329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98134b3ee9182b3f5ab0067d374b6fded0d75b10803f2c1242f42ac4e38a609c. 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/TCAJF2465973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b0476829528abce6ca6273b8be8ceda7246d39b3e2b1c30032f2b8a521b4da. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:02:48Z), 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/TCAJF2465961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95bbf4f64359094c32ec11cb0f7eb87eea8ae37cd4daf43ee0af4b0d5358971. 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/TCAJE2529767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ff146a66697a10c4d8234982fcf9a72fdce3541919d93a6d67ddfcc9ac4938. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAJE2529743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda08250a2988da9b2774098b4ebb0700d32add31ea63c0f9a200935c78893fed. 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/TCAJE2529841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a2aebfd152572c06f67635385bd8881179d02001ad056f90df570b3ab3d38d. 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/TCAJE2529808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8120739829401689d7ad32abd8601fc5c599303172fc489725d38a903bce1c47. 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/TCAJE2575424.