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 0xed29d11f5436d077676cc66f6981d9c7fa3295c920521c1b4a1739aa80809870. 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/aeed4d90-9610-41d7-b84f-8307116cc352.json and https://artists.proofprofile.net/proofs/artist/aeed4d90-9610-41d7-b84f-8307116cc352.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 0xcc515366e744b98d49103c0f6eceed61428a80b7506001bfd7b9e84d38687bcb. 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/JPB601903017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33168ae0a6c65ec363cf207a4f6fc767b462a766a9d6fd4a107c74895d8513de. 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/JPY492400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c01aa1da1404fdfb7b1949dfe7b3aec7dd1d0f733613ea868bb4688d056c396. 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/JPY492100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd447009943ec22e5be921918f442b4a6908639ddbd0a6bec65fadefafddd5b. 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/JPPC02410356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32090aafd3ee5a085b1939345deb43da5f19a03af2e047c024d7ca590173a0. 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/JPS802351637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05e5cd571f508915c9ce20a99d263f6c092b342477253263554cf5e5d9052e. 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/JPG102200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62a5509a8a1093a18c5bec93f1d705409743bf74496d3a7b8957f4a9a3e80e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:31:12Z), 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/JPZ921914521.
First Class (feat. Kev, Tate Tucker & SUBI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f29ac0d8ed3deade702da3ae675f0d3429f50d482ff8ce74a0b32360d5f572d. 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/JPM792200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa441da39186156a7c8b510bbcf23d1144e92753dd1212781d0a2429d5ea56d46. 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/JPM792100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81380b1c8eca3d700bd95c82454bd7664244915ed4bbfff2bbe588033938223a. 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/JPM792200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd811155d2aa5b592d9cd8ea34d50df3a3ecd6ccf26a1ae129de30c0e0d85d0. 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/JPM792200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e62cef28c35a19f58aae7e4958d82edb57aaf12a67740e88bb67b2b0ddd272. 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/JPM792100267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea54496acd420f9d688881a9cb47ee7471416776dbfd924916d383627ed418d. 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/JPG102400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b74962d2190931afbc1856fcfb14b4d8b9938d8d3916c427e5f2a5798fafa8a. 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/TCJPJ1957454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6c0ff1f97db4ca73c268fee883661be09eabc0fb0af8347d44507f57286a09. 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/JPPC02310286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7e862afeb5d7b175f518a9b4778c2a040ed44703d8f192ea3db2643947ee40. 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/JPPC02310297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7d7a1a4200f93610b268e229bc596e7b79f7671d47928415dd520dad6c7890. 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/TCJPL2044841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6459c8591905518c3f0f45d718d8555924eb90a23a4b918c5efa6d1d8201588a. 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/JPB601802065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05c19d7228c1000c9440fda214a4728c4b9ea7b72d9456e7df214fb7a5f6499. 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/JPB602000765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60b79ae57dcd87de9250dbf1512a914d17eef124ab3530b769da82a60ca271f. 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/JPG102201672.
SQUARE ENIX Chill Out Arrangement Tracks - AROUND 80's MIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eae8c53878da976a5fa9c816c46b4a48944f591e1830fd14c5f9b26f1bfb222. 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/JPA842002547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc398c45dd51db22f2901d7f81ec2520e3ea198ebc557c75a9d90ba950ed21f2e. 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/JPA842002548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d546aeeff8310d4b7e559d9afeaaef44e3bc542edd1afb29fc4351a43f7bdc. 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/JPA842002549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d79d8c5a48d2d9e18116ea06e47fc25b4048fdba5644069f9f1d1263833053. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPA842002550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2ec4d06638812e46a60ece8e4a1df7d8b01a660068d3dd4a1d2027ea95f2ee. 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/JPA842002551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e483cd1c2f9d508cc2bba92d6f0704c5198fbc5468bf2222290ae06e2fb3491. 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/JPA842002552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf055b88ca5c8084d820bdc1ceb3819ad221855f2d7669b3c5d8d386e4822d. 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/JPA842002553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e18e6dbfe9b236efab40dec2f7f24b647647defbc40bf95d531b7709a14baac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPA842002554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d395935380b0a2e7458b4cf73f078360c3cef5330e0e2bebe04ea6a74b4d87. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPA842002555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf95d28194b86b0ccd45d27b132814028ffabd146b121e7ecfe0cb690a035343. 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/JPA842002556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9f2d5e747ad9ea33f5d554fb0d399441d87267e91e962dd56a377057d0ab1. 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/JPA842002557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bafce0077da65d9f7e9caa8f4a78e25f221bfae83b1576b4700ae1cfec2d8. 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/JPA842002558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1901b1e89e65424397e868cf508798c932d56ab476e384693f4ce37b632e8ee. 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/JPA842002559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc89d76c8eb31b9176032313b6de2b52648c384fc4e5177f2835515e7b245b. 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/JPA842002560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a262fd20b3b8d62574ba2db36b3e69258c54c1fb2009581e4c1c3ae29e248. 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/JPA842002561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915cafedb04b93f87dc26c08bccf304b1e0c5bf46e08a370b258fc3c304ec8f. 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/JPB602195895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8d11eced2fcf83f125f18d9b6744171afbed68f3be8aa52273459c783fa0f6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPP2117669.