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 0xdc7bd3805d3d021e61aa73017e4c73d2720b1eab1b7c72b8ca3754b1cee06c09. 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/c5e4368d-ae81-408a-9aba-888bb0f3d383.json and https://artists.proofprofile.net/proofs/artist/c5e4368d-ae81-408a-9aba-888bb0f3d383.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 0xfab7fdc3c68d8077a613db3994879387f15cff9e76e9a09aea2b146ba1bcee39. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZTVM2281899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaefa9e6f75494b6da047c678432ffd5b7cda6062ddf85c54e3e2a7a12440ae6. 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/QZW9K2293373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaefa9e6f75494b6da047c678432ffd5b7cda6062ddf85c54e3e2a7a12440ae6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9K2293373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c99008fd1a2ba6a86faf62d6bf195f5a52d0f05f084b59a3244b26187c55ead. 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/QZW9N2254057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a95e80051e23679bcb70a76b635254572a92a7b46fe93ba420d50302ac2b5a. 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/QZMEP2376720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac91a2ec1a842573068a069f31c0a8fafceae32600b1d51b4a975a49fd5af2. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZMER2355463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce08aa0d29e1bcde251d7c1f8aa15bd8f4aed0b7cae6c2603e3ad6b730a62e9c. 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/QZNWY2321615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2150cc0ceb922c63975ad5bd384640cb16a8cb0e853256cbe1f006cdb3395cf0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZPLS2321780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2150cc0ceb922c63975ad5bd384640cb16a8cb0e853256cbe1f006cdb3395cf0. 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/QZPLS2321780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d97323a5f717d50e04a8aceebf044c0b79830b03bd4756fd12458954dd0c2f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTB82315075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d97323a5f717d50e04a8aceebf044c0b79830b03bd4756fd12458954dd0c2f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTB82315075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc757343c93dc549017cb40d786b7aec9183b71c269f5f96238c5e50a7d2e5c. 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/QZWFQ2386467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d717b64262859fa000bf2cab8f2a87d998f9cb8cb8329748d69f7b507b8fd6d. 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/QZFZ42427897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d66d9874a3788a78648734425d6591ed72f44dd5dde41de891d9830bf6cdc. 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/QZFZ42481532.
Lâminas do Amanhecer, Tanjiro, Zenitsu e Inosuke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839a58e40b5060605c68613f244a22bf69fc8a6b9aa1a439df65b276075823db. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN82430387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1bb7ce0976516e9e5de014b7954ec8a6288ff86d0c2c5a36e2b1a09a72fd28. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZK6F2461696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d3f0d3d1a554c8e66af75ac2c2ec97b8585fd30d300385c871bf3bf6b9046. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZMER2466327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d3f0d3d1a554c8e66af75ac2c2ec97b8585fd30d300385c871bf3bf6b9046. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMER2466327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41b44bcfc5415daace1a9c30ad666f98320be417f1077c2f5d456dd04a186a8. 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/QZNWY2406101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41b44bcfc5415daace1a9c30ad666f98320be417f1077c2f5d456dd04a186a8. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:53:37Z), 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/QZNWY2406101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e7bc28eeaa80cd52f74161775b3e903e152ed3da9a51aa33501ae588f5173. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:31Z), 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/QZWFK2459355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e7bc28eeaa80cd52f74161775b3e903e152ed3da9a51aa33501ae588f5173. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFK2459355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981dfc67a99d067ac19f2b0a12c4d2712d65c7c639c61543da002bdf7d00b050. 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/QZZ7R2473053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a1d22876d83960ef520e96828c2307eeeaa28c980440729b29b11ab7cc1635. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:22Z), 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/QZHN42552274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cd48674e8d44c362e339ac1140dbe1d85dbde0fc3010b39018c0cacff8a84. 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/QZK6Q2578080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3c714499c10db13881f78d34f2b398412379a8a455e47a5ebfee09e4660350. 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/QZYHM2508015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb602f7ac5aad1ef7c3830229389930e8882431d28bb47e14b292756e6d0fd813. 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/QZYHM2509711.