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 0xdc0d186f225115b921dd24d5b1e3c040a5df80e91c3b4f8530ed30bbe393a62b. 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/9fce0765-7674-4095-a676-10216c6ff8ba.json and https://artists.proofprofile.net/proofs/artist/9fce0765-7674-4095-a676-10216c6ff8ba.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 0x67f330096123d6bd9aa67dedbdce89901712e56b51a24470e618d7ac8edf7585. 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/BXTJO2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac03926d738e3fcaab74f83b73f240701858a0e85ae1adab14b8594f25ff1849. 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/QZZEB2398754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e169b6e001d96cea06366dca6cfe39359e6dc212a8386a968ba3ac26aac96a. 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/QZZEB2398756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf719ad27b6737da61af1616f438ee7d2247f9da339d5bacb3b8fa4b459ca88c0. 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/BRMQV2200001.
Motion Hits (5Th Anniversary Compilation) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b987cd78c831d1aa2e0b78b04bbe6b9bea6775e17f5d6b774d74d54819496. 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/QZ5AB1898846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdd10844c36316af430424a2a8e7a8a554e03e816e58aad1008f2aed7728463. 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/QZ5AB1898850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4788c95826bead626b957cf8013581eae538b07853ce3ce8ba214a6c53def. 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/BRVLQ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc301ebdca0eca02f94d23bf9e4908b165ea1f86f5654929fe719f31f66e8d0. 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/QZNJW2315196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610cb12fd184433d630fc17712459846a858f266806d6c0b4a23157aa07a206e. 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/BRVLQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e62696c2a929ef549e7cb0917c879878a176538c74a31fa5447e08c039232dd. 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/QZW9M2213463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c534ea4a43b84c855a0364922f4cdee9c602d36adac237e17e7e1e447f63a. 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/BXTJO2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2b60e26d363621b62ff77567f35b48137104abcfe9f3395d54f3d1622254d. 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/QZNJX2081237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc228d60dcba1e27f2fcf183d3bbc393ac0af347627f74e34d673d4cd356f86. 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/GBMA21874260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e10216010f44efa6c7d3cacccd0eaffbb0124b7bc81310e0539e3a56a90c1ab. 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/BXTJO2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3187eaea2d72120de81fc9f8ed3e4464cf236ed4f3076a2f34b7082ab8f1e5d. 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/BXTJO2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30af80b624de9cb8cff86933a533cf5e1e0fc81fa6190f2b3ff29ff12f72e25d. 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/BRUM72003332.