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 0xcf462c7b8a6242d3778f547b4a0918c6af175dead8a3b4624f66b6ee1869ae4a. 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/d8899ec2-9ced-4617-8121-3979494b8d3c.json and https://artists.proofprofile.net/proofs/artist/d8899ec2-9ced-4617-8121-3979494b8d3c.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 0x94faeaa3dd87e034e8d7242a34f14fff3d337297cd4f38e0ddc5ad22890983d0. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZDA52499450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98840550ca2aba037afa07c92ffd27cc26892abfd3f5070916afc1bc10c6844. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4TX2434421.
Beautiful Life (feat. 38 Spesh & Jay Worthy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b31280862ff3de670f6aa327c249c918a6cb1cfe656e7e517d7e1af89f56ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TX2434424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b31280862ff3de670f6aa327c249c918a6cb1cfe656e7e517d7e1af89f56ec. 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/QM4TX2434424.
Summer Activity (feat. Jay Worthy & Chuck Inglish)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83333e4afb222b07f0b25b65f4af911e06a589e5c986a924ce8e98a2477d4e62. 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/QM6P42409348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3d903726dc428724f9b4dddc74e148f1912578f98dd0600dd7e6a17a91cd8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM7282467641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb15025c573a8bc167a7b33213920816c9cfd68a2ac8306ad29d9fd034c8988. 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/QM4TW2583120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0adffc85427b4d4d172f379771e3b2446483943555319171fe188fb8e5b714e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TW2583121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3d903726dc428724f9b4dddc74e148f1912578f98dd0600dd7e6a17a91cd8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM7282467641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5c98c38728012af315de370c8341e8e50998aa9b76736b07a8bd589e3d79c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM4TW2587114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54281ca266ea4def08b59719ae1e21cdf2b824b0fc9ac5fd1c386ea0fdc3560a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW2587115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b879b88069c902eab6e13ed5b1cd62929a293d07938a6ca08ba4457bee3e6f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM4TW2583124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d53896e00071848a7d90992c5146cab80edeb23c23790c4c463df5ad2a1b22b. 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/QM4TW2583125.
Flowers Never Bloom Before The Sun Comes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4359e6dbb5ed44dd3df5bd60f9a27eae0b2adb987b92b4377932af3644a745. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QM6P42504690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34f1c4fd56a3424e7f2bdd066f074c91e96403f3ceaff33ef934f80187b11be. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QM6P42504691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bf42acee4394924f3b8c6a0e6b87baccf1324390643c2513e4254ded37710e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6P42504692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c6e4a1c81ad90341417f9a1d48831b1a1e2d4ccd40fa8aac0e7ff237addc1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6P42504693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a6fa8ac7410dacd16cbb75e0f90f326517156c75c37cf77e0557f3adaef6fd. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QM6P42504694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf928966a6cb1e38936950636e90d65b76e3f3aaf3bc8c0f9a76b97e3f47445cf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6P42504695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264699b312a77ad1220fa2e25a1d211cc5d6519488e8debe07ca8786a4b96be4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM6P42504696.