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 0x606cd193fea07e9f876edc55f6f5b0436d8b46d7c18a9136476d22ce7d506ca3. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bce1ebf5-15ae-4d98-86ca-be9c5cead2ab.json and https://artists.proofprofile.net/proofs/artist/bce1ebf5-15ae-4d98-86ca-be9c5cead2ab.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 0x984f5bd176a081eee4e49acfb7a4654ed86ab9a187d30ed09664bed75315652f. 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/GBKQU1904854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd77a9625963b74ad7bef52dbb2e4f19fb03e2e31790261cbc4cf1eb05465b8. 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/GBKQU1904856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451282b3a3a9dec8fbb5b6d4a6a08c1bbfd23e96029081117ff15d287c5fc683. 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/GBKQU1904857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48045146d5c9f070b664afe8075acf9b2515ea1454e66b54366c1bdc0c80bc70. 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/GBKQU1904858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100301626bdfbbdb603bb13edbb3849fc82c3cb5823fbfd3f1072077dbb45c31. 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/GBKQU1904859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890119c5accb4a4e5f4e58804047b41bf88305afa462cbc434d117d9de081fdd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBKQU1904860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8b048a0914b52ee578f551055e7ecc59fd88ca913ad03dcd86bcbaa5566a5b. 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/GBKQU1904861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c5250a79e4f2b855e5fdd4214a88a7bae21a4ae14286fa69c4d97e4ce1c36a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBKQU1904862.
Make You Mine - Mixed and Mastered by Shade K
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e03b2d241f69c038160edebea4e6d982dee379f05d2cb2ab5d01d76a1e9ff0f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU1904863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9d36df6272c73494e80ce39dda3e728bdb5ab812b0b6cff78d1cd311ea67ae. 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/GBFG92000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62239f38b321f50c74123e663d1e3a5c4da0b4f18da6e4de89c9c079a07d655. 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/GBKQU2255126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a932581f5bcbc806ed1f4976ba502e1a9eb4924a481c7a2491b64dc82df7a. 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/CA5KR2492145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea0757d5e047bafbe1311a7f880dbdbf78feac57f514f604e42f9b76a868b7b. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/CA5KR2492146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fa30c9d2ca6c83f3776ea81f6bad4c8a89dbaf8c660a3c5a662f9f519174f2. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CA5KR2492147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d766fded49f5d9270087f1c517d536945149b522f41700b9c5f5a4893e7bc0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA5KR2492148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920f828ff06b7491c19cb28654db3aacbe958de9fe8e70fa05358ab5cad0fc1e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CA5KR2492149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920f828ff06b7491c19cb28654db3aacbe958de9fe8e70fa05358ab5cad0fc1e. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/CA5KR2492149.