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 0x529160d0a66c7248f15f3e5565c185cda4cbdd1728d2d12568e8f2a95881d0b7. 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/3681726b-b73a-4b87-ab6a-f3fb23166d45.json and https://artists.proofprofile.net/proofs/artist/3681726b-b73a-4b87-ab6a-f3fb23166d45.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 0xb0db69a400f90999f1de94a76e154563b0946112c42bb36891fc91aa1227d1c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUGBT2239370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24387a4bff48f91fbc8aae1331dea2f655801b614f31961653c994f9cf8eb907. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUMEV2309533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790964296855ebf3a42f4c3a360e8596c4860087fbe45e60c9ae5c5b30405a67. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2366623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a584625886e327f1158fd77e8962ae7f195a019c08b6128164e5bedb0579b4. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/AUMEV2331905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18196a5cbb017989779f752aa36c0427a130f8747cb86807c03610a92a7c406d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUMEV2314387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbdd8f83789ab47ecdb4a173d259aaeedcdc7d50f206d24a4a3d69a432c21c2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUMEV2286627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207305362bccb0b8066de1f4fc92d0cc2b1cc37588702718a464ec3ac5775869. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUMEV2217818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179221abf263011a4e88f30af0dc7858959677feade2af8e806fc6708049ef6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUMEV2216207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fa67b5dc3d05883904bd41c39188e39c684477fc6ba3846e3622cbe67e5093. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUMEV2309538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0390607f1916e8cf18828e4a70ed8cc23c011edf57dd35b7699f77094714ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2242540.
The Star of the County Down - Nylon Guitar Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb202cea5e1d2869558435dc84c56f5bca80f48a5b63ebae889d7404301bdfa3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEYX82115743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d692886646c838022d254ee7c01a92c8929541537a6bf6e1583866660874b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUMEV2215446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52e89e6305010d510a3e660898b7854fb0b9927f218e7ef83c067081c24b4e6. 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/QZHN91909802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d20e9e9aca6c47046665a193c9ea604d6d6fb51968a4ac7d17c2affe11d258. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES52012681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ce50e7e7a914a022709cb4265ad2e2992eb227a6aefb9fdd40c05da20ff49. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFYY1974201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eee1738c4ded006a19c4c9d3b539999d61d3519317a5862613c10511e540af. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA41961082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac6fba175620e4722c340e15782adfb222370e4a73c2c783e620b788e947c43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYY1995591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8a032ecb10ab4af5d7615cc632beef0f2c51f1210d90e2ef004f8b09c35e86. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYZ1917275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118418727fbd06f2a805ecd702d307713438e298ab646b8e554613fc2a11900a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2457037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c88d52bfdc2699e48258902be782d73ad9ca8f9a9b37ae58cb0004d735ca9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2465379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41927402e89ffb21d83af1851eeefa447c1b352788efd9826feaef50954d9013. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUMEV2447548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6128208bf197e38dd6b87e459a2902679dff8edbd1ecf7f9cac18d80d894b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2374210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2476e2787d90b789a1a698ee175d3e536cb4b990931ef2b12f24d35d9a68073. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2387748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bcd119f07fca3cf9f2d4cf32fdac2a6e7f3c42f79466dadb914a44ea7e534c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2384849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f878747267e618603f6ab56e5db1a0f7c4e362ac3acc464a230b58baa95d871. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUGBT2329475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3f3dd5eb029e212dbbe5c436bfc238ed20165d1d077d4e07eb218cdfff7f1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUGBT2236536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18196a5cbb017989779f752aa36c0427a130f8747cb86807c03610a92a7c406d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUMEV2314387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34313348106999cf810f7df04f64c5846b7a4b3be554d034a5f9f68dfa58e88. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2303665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e484c187ff40026e096dbf9ec0d9d446bc9099559034f82494aee9c0769ea9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2286630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dab9e795d38d37c6d2abf57fe0be89dd70c4dd3d00b6812bc55e98e98d363b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUGBT2241326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fa67b5dc3d05883904bd41c39188e39c684477fc6ba3846e3622cbe67e5093. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2309538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a584625886e327f1158fd77e8962ae7f195a019c08b6128164e5bedb0579b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2331905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24387a4bff48f91fbc8aae1331dea2f655801b614f31961653c994f9cf8eb907. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2309533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e99582171063ed7c5e52c777fed8ccb1e87dc6b1ffe3ae115733ef440d9b47. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUMEV2310627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbdd8f83789ab47ecdb4a173d259aaeedcdc7d50f206d24a4a3d69a432c21c2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AUMEV2286627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe21880fe9740e5dbe61e7970fe9f52e826e559b41e265baaa7edc458110129. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUMEV2227232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207305362bccb0b8066de1f4fc92d0cc2b1cc37588702718a464ec3ac5775869. 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/AUMEV2217818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179221abf263011a4e88f30af0dc7858959677feade2af8e806fc6708049ef6. 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/AUMEV2216207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d692886646c838022d254ee7c01a92c8929541537a6bf6e1583866660874b5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUMEV2215446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033c2528ca623481a313473f1fd770e9e3f93f222489e7f87c582da93897fbe3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUMEV2213487.
The Star of the County Down (Nylon Guitar Version))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e80f4e263bbedb0491c443ecc5d4f3fe726d7141106af9ee43e12dd18b84bc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ71990887.