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 0xafeca01fb1ca12324f7cf66ba8e90362ac313c212386f11f37c56cfe25272542. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc9bf95e-2fbd-4a86-bfbe-fd0a7a03c4ca.json and https://artists.proofprofile.net/proofs/artist/bc9bf95e-2fbd-4a86-bfbe-fd0a7a03c4ca.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 0x347f6ad25229f0e37c4a6c08ac30e76e5d32714e88c03a4b8a6a3e21ce0291c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6F2019337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ae06f131b6117dc78b56c284e702141d5ad3a2b0cfd129cad6df3e4334f475. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QZFZ72116896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799becd35f11f75a6dcfc089e2443354f32b21423be2b5a3a279044915bc9936. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QM24S2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b658e16f3efd0534b4241633b0924de9ee6886dae2d447dcf8df0cfcd9f0088. 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/QM24S2204178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977239031f2d73e2dab8ce8de55fb77ff1d0b80884d8b97be3a557647925a81. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM24S2205130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b93daa53c18cde56dc944a9a5eb0239ae5c078ca2f883e2cf26d70d30e7b64. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:47:18Z), 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/QM4TX2340652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5b76057aa9a5c37c532f4739628289009eb2cb9c3b8986bb713372f396626. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:47Z), 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/QM4TX2340632.
Junk Male (Music From the Original Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5b76057aa9a5c37c532f4739628289009eb2cb9c3b8986bb713372f396626. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM4TX2340632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82b56dbe685bb95b2fec8b9700d266a8b3fe88a7e96defee05f0748d6962ad4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:57:45Z), 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/QM4TX2340653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f84c04a16d82a47fec96f9932379a2016111d47c9f9d9792094b2f817d5ce3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4TX2340649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c845e3cad64d0ca72b877bb7407eabe240c556e2d3c282e605b10ae58a9a618. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QMFME2338264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6f1f090327ac2d12ab486da752d8e590d04f8e8fb8160f9c53226c1004a860. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMBZ92559856.