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 0x1faa908fdc68595a9dc09d5eee59aea75a9bb413f1dd6a545420d70dcebf1b0b. 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/bfab54ba-9143-4818-84e2-ef52e036d928.json and https://artists.proofprofile.net/proofs/artist/bfab54ba-9143-4818-84e2-ef52e036d928.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 0xce9f660bb03bb6a3afd3ee9453db40d774fa6e3059ebb7fcbfd2a5da83956b71. 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/USHM81856638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ccff7273b8bd0d920f9ced7044cbdb2dd9f8145eff08b195c1dc89c6ac05f9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USDY41932597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46d0fd20be0db565099fd8b54c80cf4df41355e00fe88468b2cd7cfce2472ca. 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/USL4Q2024868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d7b607ad163a6cffee2ca8a65c63f2eb0a6f78934254f614c1909011f2f016. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USCGJ2141790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa172a18fd046ccae4535d4ba8845b7a12c6e29c839a36b082f562ea8d5e01e2b. 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/USCGJ2141794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1718eeee705dfba672c6d9566f540a33522164f6ac90c36007b118aa2b63e161. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USCGJ2141801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92740f559c2e0249871ce3633fc87b867ae64e70bdc4fd722119bd05d0cd3f86. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:59Z), 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/USHM22120454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4d2b193f006cd2bc6a85ccfe52afcf63a826dfe5a099175ba7885f80b3cfdc. 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/USHM22120456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7410c7e8ddd8f48d43764bb63612373810c33a302b903e80806eb99bf2457e. 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/USHM22120458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a25e86915b00b9afd2aa058ba90393e67fb8c9fa64d61dab311cdacb4611b60. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM22120459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5694d13ec347e663edb1e29cab2f8ad070a4feee354932d7d2c87e81b61c1b2. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:35Z), 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/USL4Q2155526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768cd4a152fbe9281946e60682c59f2578b3941e7fd0773cd58807ff12fc37d7. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USL4Q2155527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb62fb8ba26de5a1f1cbc2bf25395261ee98ccfe62c44ed372242aeaf17e7840. 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/USL4Q2155529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fb370520b21f02bb052374a25a438291511f5d4730cffd508ff68f106965d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USCGH2238735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d4a3012d06c713e2260f5502b0eebe4c43c04754ffc62015f0ecdce91100ec. 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/USCGH2281852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6a003b0cf5e7ec15ddaef4b0322ace0aed09e25c8f747006e9d35dbb883bb. 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/USHM82274488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4074282551bb61d05250393798eacf686a35171927f7aa3b8b657057054476. 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/USHM82273847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117020d7c6dfc99efec3848b3be45e3fe22592bb4e3afd4ccd8c44ade8ee5be7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM82273853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb77c8ab91aace00a087154aa73038744b530f29089b7fc148c40f757a493881. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USCGH2355412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec7e531e88ee60a83d56dd1db9a9faf61c81aa3f4ff2dac5ee5b03202e370f2. 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/USCGH2355417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2099122b69590624181f89e10e7d6c6dc2c16bd1767fef21fe4d737238e01cbf. 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/USL4R2330122.
Canciones Tristes para Tomar de Lunes a Domingo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb94270964fe0f2cb4e5aabe145b956f3150dd2767ae7f3c321e701bbbc3f3ba. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T04:56:14Z), 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/USDY42452189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae984890d49232d948444b053540ac176999d41729f466acfbf7c01f673449e9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USDY42452190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72679bec1100a099d10f6d6d17deccddb460df714f2de59b94712a12a623589. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:59:28Z), 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/USDY42452193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd5372316c40e0e252e0bf5a09bbd214bbf733ed34a62dc4093d0ea2c9cbf3a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:31Z), 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/USL4R2436497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d7fde92b7ac27b7f43437f6158fab2679ec3d53300072841ab934b6aa86e4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:42Z), 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/USY242426381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b52246b6b1618ab259ff298016858271de510eaa5df5cba641472b806ae8bd6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USY242426382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f36a85a9e73c1ad9407b01fa765568b1f36efa0c8aed16c3d4aebb61685125. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USY242426383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68f65c5ba10e2b052a50a68e480bf3b55449445a861cdc27140302d331a48f7. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:54:12Z), 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/USY242426384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56659d972552ebb7134f86ba4f9598319d0489c891b4d2042679c48334626ed. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USY242426385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7926e09f22303873faaa407f78cb3adc05939c1e215f8578825e37b3543f9dd7. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USY242426386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50773fa7cf34bee2ed7bb580b48e12fbcb9f3b6128357afbc3b0131ab703bec1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:30Z), 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/USCGH2509536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29018747cca3cba2df511a952b8a12c4bdd6c35f31db3dde6c26e017d2835b7f. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:30:04Z), 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/USCGJ2525218.