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 0x17e8a88c6de65eaa2dcec358f21ca35b2357ce66d2a1d586ce00a90bdbe1f90b. 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/3c31d2a3-8265-41d3-b8a8-14dbd0d0fd75.json and https://artists.proofprofile.net/proofs/artist/3c31d2a3-8265-41d3-b8a8-14dbd0d0fd75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rei do Kuduro: Hoje É Meu Aniversário (Remix)
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 0x8e0a3c07a16b0bc7d2a53dd032d45635e0eb44625728c45ce33e12ae1ebea791. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEPI82412176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106a3825bdd7f402c98df184c24a0610e2e271640a2a52aae8b9fd6aa01c99d6. 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/UK6822413329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145d56683ea204ff054acae7db5f7c532b51df8b2a5c0e1f5745ab04d2ec49a9. 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/CAQOI2410182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df86b1ef287c05ea091ab22aa8dd32c43264ee5fafdfd5b2de381edc2877d41. 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/QM42K2410032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89132a50307afe60ec0bc5b5d10e7a41b6c8313939d7d58f9ca945a8c72fdb3f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZMHK2477290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd119c8d2f866b5a5c4ca990ca15c198e5b1a75a3ce44d11d6c554945ca54347f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/SE57V2404942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbf7a6fda5a565bfd230782230b5c9f1a7b19af02855012f8dd4887fcb8271. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/SE57V2404943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa037fd7d8d20102081dd1ee5a884eda0b82752d61de52cb1b04fc2c9c8ff45b3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UK6822414661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a502722d8b17b34953dc62ed162fe23a090580d5bb15ffb98cfc80be5d45962. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/UK6822414662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe5a6061b52be8558ae640c46cfeb3daf02a14753cfdeb3a8c41eec32d789da. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/UK6822415711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67179d58e809737617b1bfdf951cafa7a1583d885da639141e6a361b29d0e8a3. 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/UK6822415712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fa58cce88e9bb78c40c0c644b3e3b987077dc09ce0b71870ca19f4e543e25d. 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/ARC572406106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf968c71b27dfcf83acf09499d0ba5d97e528555e1d4394967ffbcfa03f89908c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/MXA3V2400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24747f27357356836adffbaa7040904d5545176b60890d033e5eda4e7867211. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/MXA3V2400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7779bde9b3d0da41c69d98f8a460b91156c28479953435ae319f69fc5fb8745f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CAQOI2413593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd3df6bf7cc5ddefe5e3016feefc32b40a0d358477ce9fb5cd40e4dd951151e. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/MXA3V2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e474ce5f25e80f67b473ead4b2171e9153b52ad9a1f5290da77f435e737f2a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/MXA3V2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5118288ebf94f9da96fac19084c965a30efc8c229d1c0b3edd3c7c6ca23575ca. 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/MXA3V2409764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002f28f48a26fedb7ee6bf135e84ed083577a4e24e7dbc92169a0ae08592303. 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/MXA3V2409765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65e1261c5d08a693e2baaaa96bc886248bdf7fc4cf4fd91011965c802b076ba. 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/MXA3V2410138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7113cf637eed9cee2839ecdcfe5545377ef62cfe1343fb2ec9f707f77c7362f. 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/MXA3V2410139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6107f7613298d06420fa1ac8f01344595afdffa217bf56c5697026291400d220. 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/QZMHP2568968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47ef0c520277aca6b4ff0b5a04dbc381fbde149d803ebc03a147decc926b386. 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/QM42K2555920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2affb6b13dc74206bf1662ab59eb065e329850d869ebf5df2de32564be4455. 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/UK6822419817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10596c6758d29c848807956922b5971916de7e368995811181d771a6a78fcb1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/UK6822419818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ae52310f51aa57f19e5d210c53c3914576e628b6ec357fa50755471b4bf531. 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/MXA3V2413354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185821a295dbe75b89c3612785835f184549ea59b2a5e09931ccd2e8fdf0aff9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZMHK2524361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41111f9ca6b9a3049c685d847f9910d6e06c4b3c9a6f4a9288e7d81ccbb725. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZMHM2578311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eeeb27633d69c0429d8dd9b829e5fafb0f4bc9965ddc72170368f3a77c3d61. 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/MXA3V2434940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a81639e5cdec551ae4cecc017f73f5a4a1cd852d5bfa204351a6296afa6e5f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/MXA3V2435189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964959c6b09baa7bebbbc946c3789561c65acb985c68b8e80e4817a1b6ccb7d2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BGA472520611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ede4fc3597edc50138b14058be36449c03fcc9ea778a4e81a75e4f77a460c75. 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/CAQOI2529222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11938cd3fec86ffa62835be46731d5edab4d2616f238ac58c7240dc36517821. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BGA472525627.