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 0x770e2bde2ae91be9079d27802735a9933be544e379dd35160a9305b499e4d18a. 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/ceb7f5d6-26c8-43f8-b8fe-43b6108a55d1.json and https://artists.proofprofile.net/proofs/artist/ceb7f5d6-26c8-43f8-b8fe-43b6108a55d1.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 0xc53e9139cce964c9745c5f082b05a6bb56f977852ca04c04455a38db88b9a83d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ62136970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6b424886631856dfb688141a35d0792a136fdd549f548250e63e90ec2a7c20. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/QZNJX2286901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7349cbb3058bd5115c0bae06ef7d3dce98b3abebdec087c4c204092a47d0f583. 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/QZNJX2425808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e09781ea7b622a345a596ae37b68dd57c31e52e1016506f3f246c903559295. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZNJW2431672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5e2d8e46980cf5d761c45b9bf3c9af751b22108f88aaca2e0c7cfa69236c7f. 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/QZNJW2417916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346c40653b2877d310aecc735d96a75ea1426c93302b95299908c77a14dc88ac. 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/QZMZ92448135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c98d1125939502d37f6b74f6b73ea9fdc6cfdaeae6d0f292120d5db896a735. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZMZ92478396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5c392b3d1bc74452591a53c737e9926aafdc7a3593953fe793e8a906b7bec3. 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/QZGLS2479767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7759cd1355d9788c834c456b87973c6ed26a1d83d6f38e14c260212bfbe681f4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZW9K2308455.
Sasori Vs. Deidara Vs. Tobi - Bobo, Boneca & Bomba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb000dbfd04efddb3352b093ea2cb1ca353cd41087bbedb6e40c5c55fe91294. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZTVM2368563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c08bc47cfbde038e1ce95d9dd58626777f805a2a9155136f35a82a7781702. 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/QZMZ92395742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47c48a3ec1469efdc68b265094b3431310070bb2e03323584b0be4382bc6461. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZMZ92381901.
Denji Vs. Naruto - Meu Sonho É Melhor (Speed Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e3a0e009cdad612e0beee686b47d3d3f27dddbc052414ecc2890ee011cd4a. 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/QZGLM2334135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59d79b5da148463f577ca6ce89bf8008134c34f1bdbf3a8eb4505064616ec99. 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/US7VG2321792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8931a3d9e9b0afecf1a3d9abfb5d0c6506b8d9b56ab921df05e1002a8571efb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZW9N2249302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eca32ca868d1fe03a6da835e73347f817b407a50d91daa715ad86347c88251e. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZW9L2235462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec61122ac09337402afe5b3fd63c496fc1d88a4a405cdcdae303594f769807a. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZNJX2213865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5b1e9e6e5bacff1aeca62174f2c6a0c1d538263935c5e4c586e68fc0733e6. 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/QZHZ52282623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb0f673bcc558d192da1ca8749b5873e7b5537a28dd3b7cfde14aec4956617a. 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/QZNJX2206705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36cb13c6e0cbb678e6edbcf58c7cfcd5714c0ae0fbc37275eca52e66f3d978. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZNJX2202160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cad837ee484141ba3d4827c9afd95bd78802665be0686917f09586e9394d83. 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/QZNJW2298294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a07b14823c2262547006b0b82360fe41438a648297aff60390d9bcbd2622efb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZMZ92215048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6faaca40ba9ab736a35861e9ac7bab8b2e97200e3f8365a9b2eb4820429a30f. 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/QZHZ62280917.
Aoi & Inosuke - A Gente Briga Mas Se Ama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2964e7417f92d99185c47a1ddfbe06eaad879f29305642e298a463e250e67c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ52282500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e407ea797e8088e6640d72eb6d15557c34c58776cb73656e5c09aa4dc56563. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZHZ52235168.
Sasuke Vs. Hinata: Esse Loiro É Todo Meu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a0ea2a9709a483cc426d1d265175e28993ed0eaef249c04a2ae9773f913fc7. 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/QZHZ52235321.
Deidara Vs. Rin Edo Tensei: Esse Mascarado É Meu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e37f7a60ae6b814df55824a1de70a045954daf5a0a3e1ecd030b080e3a182c3. 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/QZHZ52234803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8437a529f4dd8c1f23c10396c0ba03a9d7ad0f92b8058ec18044b74445b17a55. 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/QZHZ42236396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b94dab4db8e28f669ec7f4671a78dead05afa6d81301751d4e2d50cc8660f3a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZHZ42236501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d131696ea727ad83f3b9343646f24b8364429f9de280763333b0bbe3e4fa84. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZHZ42219955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7739b7e4f747d1aa06865f3fd4505330a20997968dd9d90ced29c04b93b994. 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/QZHZ42236684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd03b5af0b3cc11c32b5afedf9fcda816fce40e9370a30a7dcad38497d012b03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2120362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9b8e80ff208465a6796e223917bbc2408d100145cf411dcd8ca490b4813260. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZMZ92143546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c6603b652579d5d555da735b4465d93bd7bc096748a0dd09576f6e468ca876. 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/QZHZ62192016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb97d38ad0785e31212960376aabde2a928b23b4e3fbbb542801d5093d268b00. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ52188930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd89d3cedffe165719b4909ac7a66caae745fee208df97312473b3f9557d7ff. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZHZ52165541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b01def69a9f48c8bbeb16d3d3336ec5a798a9b5359bb979937193f4ae0aea. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZHZ32174896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e227923078c02244da3e0530e79fb828c0187d30eceed3d1c3815f213b04d98. 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/QZNJX2107509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54202b3ff7b2e26b40e5b5f0a418c86d2cb922aa61b76fdd3a5f92cfe26defcb. 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/QZNJV2181244.