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 0x43ea094928778b018fe1dcd4ff9ab594b77f72343c8fc3f5b49a5f3c10bac4e8. 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/47c244b3-3f09-437b-ad03-b04cf531ff38.json and https://artists.proofprofile.net/proofs/artist/47c244b3-3f09-437b-ad03-b04cf531ff38.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 0xb28cee0550ba93d948e21686ac9823a97feb37ac0fbea50010ce92ab2584442f. 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/QZTVM2381694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1cf114560f366e79d4585813f9fe2aa6c5b1fca6eff84c9d8947fb9d09c1de. 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/QMDA72156538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0958347f24b9fb428465184136427079c4fa58ea7307599ed3eb7efcc55d4474. 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/QM6MZ2284477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458b9b5694e499f5aac91aa09574b194bf6a4a49a4cb9c8c1ef2e48fd8afc35c. 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/QM6MZ2284480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bf55b1a2564881ebc1ddd9c13fae9e53b6d4156a1a2c7855aa30fb03646665. 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/QM6MZ2284483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b1abf9602c972a31846909e7256ebda502cdb53d8f4fef9f84ebcbf7f4567. 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/QZK6K2044566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe12a3ae3d42d0f4c4da1630cf6c9ce44df75fcba0cdeb1121fc3ad28a53bc2. 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/QZFYX2151552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637f120ff44491e0b81d7a86796ed3695da4b5f2b7d5272d205627bdc2b8216. 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/QZMER2022864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a1dbeb69bb2c31f25569aace0985060e10e7ff4e93380b4cea1b474556a81. 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/QZMER2022870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84daab63a543d978ce633ce5ef6154dbb190d87cdd7bdb9f951653b4f7664ce6. 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/QZMER2022872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578d12851f1827187a9aafb1c7d0571c05b85dc3feffc80fd32feb250f1827b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMER2022875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d65e135fcbdf4578d182c8dcff716fb3eadef09efcbda50ad05d765c3cf1bd5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12100166.
This That One (feat. Krispy Life Kidd, Veeze, Slap Savage, YN Jay, Louie Ray
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879e22fce8d1aa41e44907d813e3aae25ea72dae531c8516e4653ad99032fffe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12100182.
Spice Talk (feat. KrispyLife Kidd, Rio Da Yung OG, Louie Ray & Grind Hard E)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d12c748d36b889dcf9b2b44698bba1bb87bdd1f515b10eb513ef0a30e5046ad. 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/USLD91732606.