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 0xccf31620ebb5789614e0d2e33d3fdb7c7f838f957385eb69ec6653a7c528b1a2. 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/f50eae0e-b04a-45fc-84ab-aeffa80bb2f8.json and https://artists.proofprofile.net/proofs/artist/f50eae0e-b04a-45fc-84ab-aeffa80bb2f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Great Fairy Fountain - from "The Legend of Zelda"
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 0x40ad447f1c4b035ee5dc0b2f1a5e871d9b643fe343e4eba47079773ebc8207df. 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/AUGBT2428452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236f9aca3d0fe56b9b116690ab6a9ecd8a642dddb197319e3e5c51610a49ce0c. 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/AUMEV2453827.
A Place To Call Home (From "Violet Evergarden")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c155594592d8431593115e7018aeedc5878f7fb1783d0546405cfbb94799f4. 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/AUMEV2447528.
Main Theme (From "Avatar the Last Airbender")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec6aa0ab3614892b7b84c740ba4545e84062bea560275e4d25a8db0096ad15a. 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/AUMEV2447529.
Final Theme (From "The Legend Of Korra")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224de1ffa7cd42af4d4003094bf034b7d9aa00bc5b8e16d093a45a14a197ec29. 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/AUMEV2447531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed262f1e8ad308d08e51c900c354b6fe4180b0f59297b3a6ee3ce1ffb282324. 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/AUMEV2447532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdb8f52f763b2572f0d49cf6a80831ae30b6e4776e8972a2ffa6841cfa659c4. 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/AUMEV2447537.
Service and Sacrifice (From "The Legend Of Korra")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aa90d1b5e1cae5c0bb05bdfc8c9e9b790ff2d1bee18fac264c0b3a51cffb3c. 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/AUMEV2447539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227da26ca0bcfc9c77cc8535e99780966d6138c3c073c038a22dfed40bb71c91. 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/AUMEV2447514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffa8e6adee1293ec9f9529030502b1f6093baa59e9ccf0a7990d1e4e45ce143. 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/AUMEV2447515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7de5318a8fae54f8a406e4da100dc65a104d170abdf1c7cf98a22273b56e32. 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/AUMEV2447516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a42e0e8eb50df76c73f0ce9bd7bfc726cad75d22ebcecf903e30529315f684d. 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/AUMEV2447513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435a5468c6cce639ef6452b10f6fee7ec6feb4ba976ac2df132362c40a170370. 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/AUMEV2447517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980f27c283a8dc21d68c2d43f2f1715b37b731c1612d9283be1cf9a0fee76254. 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/AUMEV2447518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46ce24eb868e3379dd448ddbebc744ae58eb8613c87b354b37b7256a35b2b11. 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/AUMEV2447549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9849280928f7a521bb6ab8ec51a17ae6e392d412aa298d241a57d6cbacdd3b. 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/AUMEV2447520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679dc0ee471a920923914f8612b360219c355647ea2d3ff8812af32b0fd4b6b4. 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/AUMEV2447521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5098552637af9f805e7db1f293c72e584baa79bf34d596374b7809c8e7ded38e. 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/AUMEV2447524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc16971a2888129fd08664248e92ea559d91a814d0aff4e157c63ad2ba1422b. 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/AUMEV2447525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0dabfb95a6bfbd770028a59ecd590894904be2d010cc0d4f61abda1f12f46. 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/AUMEV2447526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d9f27f8a1163db88e77e2fc407b100887663024778aa1ed2b929192d254ea5. 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/AUMEV2447527.