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 0xc666c2537f97c2751fe54631ba380c298f4c4b813771e8d9b9ca491b97df5e4c. 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/3b7a82d8-4f6c-4961-8d12-05a960888561.json and https://artists.proofprofile.net/proofs/artist/3b7a82d8-4f6c-4961-8d12-05a960888561.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 0x74f9e49ec4fc98ed73c0b6715beb6cb27774f4cefcfb11f847318c9af3c4c34b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:02:06Z), 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/BRWMB0201272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f42e08e809c4f435b8ae6266f9eb38fa9323273226e92f0ca4a86ecc5684428. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/BREMI0500821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa929ef77a83f1dcceb63b7593658e104cbebc0300a0e97c497f55a8ccb6ced. 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/BRWMB9803382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7918abca859b3f3d55261c9a84a39dc0d675bacee5e17bd58b094e6152baaec1. 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/BRWMB9705873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e0985fc79d13b04249b4fce7d5d95f994dda417c30274549cf27bda34c8e03. 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/BRWMB9803383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9628c9c7a6415a0c3b2ac6ca4b7b5f6d8379fc1034e18f5453eb6f10e0fe303. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRWMB9803386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4411b2c4fb84722c9e6be56cf7af3be43c1fa900e2501e4acc3b442c29307784. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:41:05Z), 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/BRWMB9802816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdf14ccb54f5175acc26e94debe6c4951f9f1c755c1cc231c55ddf8a18f654a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/BRWMB9802825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf9fd912d16d6b101ec115e5921418980cb61d0d84fac9bf11d645c012a6a0. 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/BRWMB9802826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa929ef77a83f1dcceb63b7593658e104cbebc0300a0e97c497f55a8ccb6ced. 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/BRWMB9803382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b7799f834f6ca17214201c3ae0a9d5c708bb73c50ad941191c1c3d9990eef4. 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/BRWMB9803385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e0985fc79d13b04249b4fce7d5d95f994dda417c30274549cf27bda34c8e03. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:04Z), 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/BRWMB9803383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb0641560e655c9f1dd592854d7f93aa91a5003c2ca9c0074aadfb90ec7830. 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/BRWMB9802827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be5f624148ff03c54238c4c0019eb874065897cd93f9c37dc7272381acf43b0. 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/BRWMB9600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aab395ce3fb2933a7b593de3e71ebf32c0c8372e1d6786ba07baf767e93ce26. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BRWMB9600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf278d6da2b58747560da8e54f706e523e0460d78c3a0a081c6c3f90474524752. 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/BRMVP0201141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a134f0f6e724b9f73d3406efaa2fe181dcd0ef42e80e71228858ed225a13dd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:57:12Z), 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/BRMVP0201143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc818ff94ba7ad3e8e8ad093c3ed0a66dbde87dc8f85f5910cceb1d0fd27dc6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRMVP0201148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d2ae42f85866b0b217d9f8aaf178d1d8a9745c3e16a8f9befb61031e80c07b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/BRMVP0201149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de74a46574af4919bd0299f6378f735d002dbcd54d6da3b7346393efa507cb1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRMVP0201151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d65dd16dfd8178a04b5008f5c4a50c075fa71aedb507669a96e82fe1b89bd8c. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:23:39Z), 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/BRDD20400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a135211569b72551ada6cb5f1eb244409b30a5657ba42463ad66052cf4b125. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRDD20400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb798054b03affa264f46924416a86186cdb36f2493a88d9978f6f8e914d62305. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BRDD20400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe666fa5420b440086401511e7eca73a4032eefaf5251c9f087f385cdecd693f0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRDD20400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21733a41db393d5341644046bed01099c7b7427bd2c10b027400c4aabe86011a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/BRDD20400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2c1a66df0735410d0ea09eb7ba976ef5aafeabd0c4ddbaa5f29c715ad61765. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRDD20400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de2ec462ed6b175ab9a88bb38ce3e925622263847d5b9e91c7002d59034087a. 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/BRDD20400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a8a4901fa84d0a3e9edb561195affd5fcfc893925e8a7ec1d1e1cce5a350f. 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/BRDD20400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf26e284f190a418637c2dbb3587a06efde99ba61a87199f33e2e4e4249919. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:16Z), 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/BRACP0400910.
Sertanejo Raiz, Vol. 43 (Brazilian Roots)
Brazilian Roots: Sertanejo Raiz, Vol. 43
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f9f14bfda56259a9c5d2a200bfadae6b0ba71f50ac27f38573681b0522dea7. 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/BRMVP0201398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4defc6b1a9d941663e3eeeb54e79193df11e57caf704aed636bdd5fb9198e84b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FXR752300254.