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 0xdb48d0573a995375a09fc93851dc8d0b39abe9e4caf0e60bc42dd969c9c2e069. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/515d6e25-9f0e-45b7-8177-91b9e00303cf.json and https://artists.proofprofile.net/proofs/artist/515d6e25-9f0e-45b7-8177-91b9e00303cf.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 0x05770cb28348b31bb3735a8179a4e86f37992fba36bb5e0cccbab39a0da49054. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZES62305543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32dcd78cc07663548af50d0cacf35cff90920cc95ff7d9537bb0606d99b56d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ7P2443302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811f99ddde7ac9c9c6d6c45c3341fcb04da813238d7a5e05a49e4b0c05778872. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/QZZ7P2443303.
Can't Hide Love (Guess Who Loves You More)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa21a112a6645a2c6c06482b3722e653958a3b7b29b54943e8180aadc025b5cd. 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/QZZ7M2436923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e884982ba9a2d07602a31f875ca669119435c53240c42de2e59d6c400075796. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ7M2436924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aeb28ee45558b0bdfc78eb9756a7c00b543a815a01aa03b0884d842c1274b4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZZ7M2436925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d3e57cd4b831e1e9c1e31e50d904dc3b94345e2246ebbdf0c3808769eea37d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZZ7M2436926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562a888b48f643bcce7ba99df071df9895cc68766d973d78cf73ca77d6225284. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7M2436927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da15d1ac8fe35b3659119957bc4ad9e9bd79a4c81820fb15cca0e2aea127569. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZZ7M2436928.
Footsteps in the Dark, Pts. 1 & 2 / Between the Sheets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87590fcec3dbfb0aa7876bd0494c1b9b0352a416738171e84f80d9c6aebceeb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ7M2436929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5449bd762cac809c2019c828c93f3183408e3ea52d3eee74b3db0b356767ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ7M2436930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb753f7e2500372b8eb39d19a15f51d22a789c26bcdc938a7b4c247cf11ff8. 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/QZZ7M2436931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b01bf3b78385f5b26b2b83b7274209254aa5c45e3aed119e01b5bcd071ae2a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/NL8RL2526133.
I've Been Looking For You (feat. Eric Jaye)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362c38fe8b24e37a55f3d6e7e4cd04c6543c1b83dbc7088e122f532d3920050. 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/USUYG1266890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adf0c89a25f5da5626ccb2627c1dc3d3a52a5eae4b46504b0d7e3fc795919bd. 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/GBLFP2481511.