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 0x87c5f4691508eef01c2f0957ddfef13a88be4fe01ce25cad9dbd18f3acd47e8c. 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/d3db1aec-4a0f-467a-98f2-3b5e78a28fcd.json and https://artists.proofprofile.net/proofs/artist/d3db1aec-4a0f-467a-98f2-3b5e78a28fcd.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 0xcdf32867353e7bff6a04df0a25ab7b96d9cea97516f28b6834d05cec4f740a55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9e5c75355980b3a36c49ffa17092674c29279ffff3282fded64313f52cd36e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11906214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854b7ee0679a9979610b40906905e5c636f6018d043f42da432c97baac7ddc0b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11904899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cd11f5eee6f1d0a515eed71553f09c515cd0da1c8de3b07bf8c6984812250f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM11909045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f6a4b5ad53e19dfe3b0a142f206e38cdb3cf3ed6e8f5a41de1bf0c4081279e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbfb0465dd9456d62ec1211e8bf5407aa51239196908c36f40a0bda4cd22824. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11901158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e455442697b13bc673ec4b4721476c31bb1f6738ac42cf201ab5ab4e7c1cc0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6539ea539bba80478dcc313c00a53178b93a504b8725a05e72e22242e8d0b7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b855590f8ac4220714962bc3c364f74509df28c02163460cf7b2175029aa31. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75d22120c9322a0b9c8976514a23f88f63baabe35892f84bd5872659a12bcec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11809245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559f4364d355706c401df06104e120db93d4aa1099410c6c7983cd05418ebd6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11904710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc4e3a2f30b74fe9134d8290debb1adca33735d474a8ce18b7f738ec68def99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11807756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4c595f5c6ac9afaaf85a0887d1e560f9ba3a08175249c3a8d5f3d4930f2251. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11809130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc126d96471cb903f51ef97c9ef1e46435913a1190d57c2420d374a665d50b660. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3166eb153985f5bbaa1d970b4677229a0cf793ce9239c4d6785bf6d604882de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11909044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291cd0be0c9ccf1e7e6e86c0f56b1d7181a0f5185981ed6557175d707d5948d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11910138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e216f2cbe142b18f37b45cf75911c96caddd5a7b0f60f503b6319ef8f9694d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11910139.
Full Circle: Sonic Book One (Alt Sounds Pack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d4cc68a308cbff0f7a51071b592056678d8f227448ffcf6600f4b6a4c3bab. 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/QZNMY2357948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc595bc441d364f1865db80a4667ffd74329dc8d078c61343a82855dffbf0453. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNMU2347239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49650a2e2a11d44efe0fed27b1b53ad1f42c4d6f277d7912583b67bed57c5f10. 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/USSM12006379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349ffd5e19c5c08f10538705fff4bec34423829b65ea2cbdaebf9d8c5af29a1c. 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/USSM12001884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c90b10d7f641e786ba06f2080715858bd7d295e1b28aa242685d6f1be0d7815. 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/USSM12001885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9303773a8b03db75ff9f91bc7635424e38f35a8f0deddaf7fda6860c01910188. 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/QM24S2308135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae3ec99b6d0d50a749f3c5b4dbb54b0eb2795983c4098acf683540f6ed9932a. 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/QM24S2308136.
Part Of The Game (feat. NLE Choppa & Rileyy Lanez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702ed93840c3cb50ebde4d599c03ddc3dcbf332de1801ab77af12938dd16bf08. 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/USUYG1348973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe57050233a80551fc0b8b66882fe355e3491ecccee97608ae84075c33ac3cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFK2137022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e54687bf12e2acd2e7b6042dc9037562691626a919b993482a406ea13f407e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIR2478464.