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 0x6cdacdcdbd93d3c25251f66ddc8e8b753539946a4850cd2e2bd4cac3b052c984. 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/d23a062d-661d-44b2-bdeb-04d208e37679.json and https://artists.proofprofile.net/proofs/artist/d23a062d-661d-44b2-bdeb-04d208e37679.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
HOTEL BARCELONA (Original Game Soundtrack)
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 0x08b56508596f2981d22987d924a419b74b87305226dc29ab192455d9a7aa8a5c. 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/JPA840500537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ce7ae9104e9ceb227a0e4cfd5b73c2f2d7d459f300e5c836f4458266dc8542. 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/JPA840500538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65fae5355e0c92c98994576558df2b258ab6cce3662b3bd460a6611c1f4bf6. 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/JPA840500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0253f3127531e29121dfa4d1bf773dc2242ec955483d07bd2cc480daf018e0. 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/JPA840500544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfae7cc95d70e9bff74b97c9e22034dcb3ec43080a8f0f2af2265ff435257aa. 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/JPA840500545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7cd60c9c1ad870d2a71845827cff36d6c26ac8d177ac6079bafd33c6c7e2d3. 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/JPA840500547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a40be72d1980c6628d3aa381b0055b7b7a718d0186d84695a97f1fa760483. 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/JPA840500552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cc4112561eea2407a069d56e37952ea64d8d6c1be729fde7389207a0a6cee5. 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/JPA840500555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8843d747b6479002c4d256ac607cc5419308668b261a060c8f1f9eaca7657ba. 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/JPA840500563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4aea902cbafc5d0ae021ad29fa85d4d961538ac7d4992a99193b0d6faa0a64. 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/JPA840500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22aefc4566efe6afd106599132daf535396c0372d8dd17d0984e0928909c6a7. 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/JPA840500565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e5377221d7b5fde8e6e2d6c781dabe424c1bc044b85d414e1728d3848fcb26. 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/JPA840500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2926799ee5befacac2608c52f095b4e555ac284ce1325f4a04ea24e3d2a79e9b. 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/JPA840500580.
A Contest of Aeons - FFX, FFRK Ver.arrange
FINAL FANTASY Record Keeper Original Soundtrack (vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aa64a92c4b511061cf8d1b0e4a18da87c80a243bed676a5377f00d2818b6ff. 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/JPA841700491.
STREET FIGHTER V ARCADE EDITION ORIGINAL SOUNDTRACK
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f149102028fb46f1bc49bf6e1317408e42ee9cf66053ac69c8487789b474730. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/JPE101801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b129c5211526a6c1bca579da2185031f13acf1ffdcaf43923ed42dea067e1. 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/JPE101801340.