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 0x6b4039b5558c372af3520066ec224755beb17b6c8d6f3ca39ad11b5859d68837. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43364573-41bb-4f10-a3d4-6bf048d17f28.json and https://artists.proofprofile.net/proofs/artist/43364573-41bb-4f10-a3d4-6bf048d17f28.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 0x51bd008b2d04dbcc9aa9a47986284838eb0583d42e22b0eb888ab7ba78b80695. 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/QZGWW2087232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d5d8c10f424571c3f31937ae856cb0ffa7b66a6c271d734642e2233714cdc. 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/GBSMU8987670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38c198e0aaf5c66f6c06aa928ea1a821959c9ee065159957011cf92096e05b. 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/GBSMU8966793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6abbe07629f02bcc1ab748700901277393d167b9d5d7aa4efdf650c655b485. 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/GBSMU8888224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af69aed475eeba67a2c647aaef449a8a185e0d382451d89f06ca90889f2f6ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWW2122500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eb4ff518234ac54f01603b619c50a85bca929370e0fdddbe14e9cde81df3ba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWW2113623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10977f4ae46ff4da4c261c50fb8749b74cabeef767abc9d3dd3fe02c8ba73b49. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2016363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41152eded7c98c993cef8fc3b4c8e6e276222ee4a2a49f80214138bc40c42be7. 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/GBSMU8423874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46930ccb53a16edb71fe74e2ab2707c06f6cb422573aae867d0eec1abc78bfdd. 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/QZK6H2053541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee02feb1bc0f73ee867db231ef8c5c3b31fb5bf74b73099da37f5abb234033a. 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/GBSMU8513986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5564e87edffccabc802905b1525c88b5296eb9de39c2f93739cecb75048e1759. 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/QZGWX2145951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b180b2ac80010c4af3c862d6a8b662b2fa09ea8d9a62fdf0e751283903b1560. 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/QZHN92093790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11f4630fbe396ba0fb81af8a394a3b8cbf2067910addc11063c7d52ddc7872f. 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/GBSMU8059586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b039f03f40ec3f30347579beac7a41623a7c8487bdbc9e653c49ebb047e8e5. 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/QZHN32069245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf522af12d80a09ab64fea13dc58865532fde16bc7474d4e4cb3f30ad607599f9. 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/QZGWW2085824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1901fc5b3749a4772db18d4360ccb7c0115c7cedad231b4cbdaac240a82ad6d5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZES62081096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f6aeb82473cbd076fdffa4740f01cff27eab3ba5ddd1227495b3c7d003d943. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU7888488.