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 0x93d87188f20b237da8b439c13f68ab9c2f8ccfbf90d37c6bb764a5502e271564. 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/69603e48-6e59-4a62-91ba-47aee91277ef.json and https://artists.proofprofile.net/proofs/artist/69603e48-6e59-4a62-91ba-47aee91277ef.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 0x33effc04668c2a00ab925e0b43dce4cb1a7cde75bde9577861fdc847b72dada0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:40Z), 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/QZNWX2028343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af110e77947b9559790022c68687f050276dde9da206f206c502acc23a61222. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNWZ2166896.
The Houses of Healing (From "The Lord of the Rings") [Harp and Ocarina Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23a234b8fadb10f8dbfa4ce9a29b807561488b13f01f7efdc73a258a75a7035. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZTAS2161797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b6bc61033877ee2047756987422283c7015af008cc28a95b5ba28f0ffe3850. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:24:25Z), 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/QZK6M2213974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51002326702857d124cb334b84de2fdbdb882fc70e28d1b7b072abeef12fe33b. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QZK6G2275147.
Jenny of Oldstones (From "Game of Thrones")
Zelda's Lullaby (From "The Legend of Zelda") [Celtic Harp Version]
The Wolven Storm (Priscilla's Song From "The Witcher 3")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f784a605c4cca8c15de2a2fa3aab5239d9eccba5e99cea16c0b244b694d2ae. 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/QZMEN2246244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458a2d0a3c5f4d2ffbc2e59b48516a6bc3d20d891399f43dfc5e5bd73150cbcd. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNWQ2255724.
Serenade of Water (From "The Legend of Zelda") [Harp and Ocarina Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e873238546cb728cc057f1a98b4bcd802039681cfa45b1a8b14a2ff0f6f117. 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/QZNWT2234156.
Song of Healing (From "The Legend of Zelda") [Harp and Ocarina Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943ef7f05450b72a820fec1b888ca2352992029f4b3a7113a2b6152eabd2570a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB42227370.
Harry and Hermione (From "Harry Potter and the Half-Blood Prince") [Harp Version]
Harry and Hermione (From "Harry Potter and the Half-Blood Prince") - Harp Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6d0390a59052e7d08f7c4e4fc49b51055b0c9e50e689fc21d91f168e3da02. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:41Z), 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/QZMEN2246245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b45e4b4c0df5660c1d94dc8ff2220bce7a6ad604902d12e3cd6e231636b9d5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:53Z), 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/QZHNA2355486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3edabd66ffd773dd8558031525e40606f1aa0689eb72e08e1a754c77d71e92. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN92460133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3588eb383ab77dc39a02635960d86a406abb632ba0fe48853d5cdda4a5074766. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:24Z), 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/QZES52420704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643d500b96c422c29b44abb7c99929d72ca71b1d993ec5424365dfb1c2a523f2. 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/QZES52420705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba3f8cc01ab0bd573c5330b7fb8c7b251eeb6c39ec7eff775284b418f44c61. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:34Z), 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/QZNWU2576596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d607bb0b0664ab2b5d8a53c621cd618bfee4997bd9cf693c70f48528467e57f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWU2576599.