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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bf4558ccf797a8433ca537ba046e6b843e89f0e000e4bbe151840807df14e4. 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/7e4525b9-3b4c-4ba5-b57c-67a3cc083394.json and https://artists.proofprofile.net/proofs/artist/7e4525b9-3b4c-4ba5-b57c-67a3cc083394.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1817b47911b59708f6006b90e07aa57e808a81aab6733cd335d4be87c86bdd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USV351406807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4f6ddc53635493ef72a39e5feecdda8e658c42e20e8fd1589f5f962fce3da9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:18:57Z), 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/USV351406809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728870e3b0a50a6ccb152b204ce9059d533f5061ee1aed18dcbffd40b90f63a1. 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/USV351406810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f96a89748012ced9e8c7e7cde2d18c5b6d109064f55d88e248b5ee1923f55ea. 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/USV351406811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f589fe9827b5ebd8b491436a13b509549878831287f9b24010313f2517bc8e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USV351406812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e7519ee812b1bce78a83479728751fe3fee3a3f25e33364d0695f9b468997. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USV351406813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06d601b27954b8cd8fdcfe734b188a8726e201b89b9a1cc690968006cff7657. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:25Z), 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/USV351406814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40ce49331380d7f2b10aae8b5e3e767572c7d63c99aea265c6f354d6d9b3e50. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBSMU3533310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d320d6090a7b484b520b007c3e335ac56c4e512f48f9d8eb8008acb8bf617e9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBSMU3533312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95658c4539e07cc2819e51fe55d82fec913c312c132f4c75ed344dcb894a3180. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSMU3533315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcfca7c9686e3dccfe310976d20f172512e2bbf1091788438ee799971c056de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU3533317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2350b2eed03f1436b1febdeba82e9c1be115552cffd7d7dcc78fc3efbc846259. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU3533318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d33f44ba79a9423e603f1f3364c763eff143515d23290c1d8385f0e82210f36. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU3533319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108bf9b15b2f8d2aa23051745a07dc9b8076cbaf0300300dc134f14008fa9c35. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:09Z), 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/GBSMU4777155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e866977913f98bbcfef0640c7d6df6e29d2bf8c8c416c5a350e2aeed9ec4510. 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/GBSMU4777159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0bcbaf503603c217237fcd13ea23d150acd248ce232e8a9fee1fd5524980b9. 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/GBSMU4777161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fb6ce8d8f00a7b141e661421c409b394fad457f460698fe4b27e05e06c47a9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBSMU4777162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2909b072787d3a7dac00349f5f51af387e632add8c569fb952527a462a8fd3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:16Z), 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/GBSMU4777164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478693f56f0220f01e01b86c09c531e5a5e91dfdcf1110e261daf1bb6151725d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSMU4777165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72f0556f92d43306f15399145e300e4a0ffcf9723e59b9f52d8a4c4c4b10a3. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBSMU4777166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e9cc54111061cc99720eddcbd2f0e7f7df3fc76dc57b61905f0f7f9b764f2. 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/GBSMU4777167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3344155585ce9d021b6ee41b141146c1fed9fd2802a0f7220e21bd2e91dfbddf. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES17E2000428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2526c6312ba68fc0c86a6153ad6fe8f040ae43ef590d0b262a755b7bf86d6d2. 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/ES17E2000455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36e03397a4918a9d9c696bccba84dd0a0fa41b3fc57e8d2f4167d15f91f8c87. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES17E2000513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272912ee89d60dfe78e7b9707564065d0e40db2c88b498eeda5d0554c5b094f3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES17E2301800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9707d7cd010ee7425dd2532766dcb7563cb82e6b45da6630361d966ae57bfab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES17E2401825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138a067934c60b080706ff026d435042056e81fb630164eb4c883eec1bc925cc. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ES17E2401835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ca543e6ae1cd4f98a9cdf9cdb5bf39ceba213abda10954d030e71f3d3ca3de. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES17E2401838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d8b5ac8cc377396224b3b4409df09c7cea34ae523a5517dd712b83f77a0f4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFX2101342.
¡¡Stay Oz!! Hasta Que el Cuerpo Aguante: Tributo a Mago de Oz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84462d1350a89d00df0f674a59d04be59dbcbb96b87350f29471c232847611db. 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/ES71G1830638.