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 0xf88e3c402f43394ea704e4ed95915e864b10eb77e14c41ffb17cae3abadac19d. 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/f4c09206-b794-466a-89d2-59d48854ee51.json and https://artists.proofprofile.net/proofs/artist/f4c09206-b794-466a-89d2-59d48854ee51.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 0x1808acb7d46328d33fde082c9c5c15fc0ac0a0441da2b8fecee268d39a58916d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:41:00Z), 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/GBLFP2225869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf27f174bed491ac424a0a1b9208b8bbb96b413e9bc75301b58aa24ba64d66. 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/GBLFP2225870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208c35bf811d463abd3e6266afa19e022e7ae011e8f830181714e28be1fcc7f3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBLFP2225876.
Baby I'm Here, Let Me Lay You Down in Linen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f76d257c38f0fe0bc18d5d91ada9c2ef834fc8791f6a5af15646e334e2b32. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/UKXN22261208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5136393f453c5c9c73b0103c0cf076ae8a95c0f480aaa8fd6644a3ac95db17d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:18:34Z), 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/UKXN22297249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1191e021ad3f818188172a680b8c3fac54d310e03fb9bbe397f694ef3592f698. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX3Q92321841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3bc9dd1035b79bd2d59c62b6ceb3d721c16bb4675cb4762182e7a777fd514. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:13Z), 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/GX3Q92329921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3765a7d4c40c5873226a047262b9deccc99686facf15d964a2e68eba51d5f49. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX3Q92330451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0bcc2aadfdba1055edb72ab6d050f7f09151ddc20fd3fe5fd0a5e5d1c37f15. 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/GBLFP2340330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355a6ff041c8462984865f4c8628758f4b4c0e3c0d1d2f639c5a0253d7ecd4f2. 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/GBLFP2588845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f6f6596eadb4a5ee8df2a0e477ffc069a815c2fc06f3de01eae15969c2ddeb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBMA22527943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8793343cc5d374b3baf31dfd86bfcb39f131d3cf9bfbdf3c0b4fdcec5f71ea52. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:56Z), 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/GBMA22584476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7d80df064c4fabcb2c7de7328a7c99abbdee66fcf3aab99b933b0c52e7cd30. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22593920.