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 0x07217893cb3877f06e3a6da20f317a8447fa603f2d6ff9ad13a3edd76e7baa07. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee45e5aa-47be-4d26-9eb0-7669e368181d.json and https://artists.proofprofile.net/proofs/artist/ee45e5aa-47be-4d26-9eb0-7669e368181d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage Remix Boutique - Skeewiff vs Kpm
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 0x38a7d9fef935db0369a8489582150eb585615a4af64d2954c857212052d40271. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBBGL1200577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa752889045264fc5b230f050b79b4e435d54a6a003b7863eb448f3d7517fc6b9. 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/GBBGL1200578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba93b7d635992bdcc01477d3cf549d00d271620171e605a5108de1b488e948. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBBGL1200579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcd58efaf19d3ac55486bd56c795502b51def4e14b7d6b2fbae3d4f493c0b8e. 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/GBBGL1200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66fb5f06e7c0a4500a7bf144da7a6c67e018cce77a8db8cf0cd6fc7f7be244. 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/GBBGL1200581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e90fe0773f0d56cbdc03773c0b93601ee78775759ce643767eed5390e46197b. 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/GBBGL1200582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7ccc3de8b1acac150735565f27c84fa0606f4653bb9d03cd4bc5b053f40e84. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBBGL1200583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd472e24fcc67895eebc2e8fb1ce3d79c4e9e7324b4d7f29ea5c91320298bf936. 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/GBBGL1200584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05ba440dbbd606dc8981fe15413d1356a365bceb01c2e4f2603b6e73a513995. 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/GBBGL1200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749b717e052a511f158105266fb877cd778965ea11e4aa319f142412a67c5c86. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBBGL1200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf167511706b387f53a4d224eef6620b05d6d0ea73d6dcd8336ce011584cc31. 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/GBBGL1200587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3b89fe7e2138bb3e1413e57605e8abe365ae66380c4a27e6d8b1cff010e207. 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/GBBGL1200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeffc39e221e88ef89f4d68c31752470610a9df3be9a2b2923b48d5fef2a9e74. 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/GBBGL1200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59647dc2ecbd83e4426baa58db3e524e9c853de78e693e2e21ea2b4e5a8703b4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBBGL1200590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f7a05e17f3591976455df0127c62c212c127022a27ce300a3463290de1b6af. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBBGL1200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c458ea5d3194ec3e27d43c4e83f123e0fe1cc202c7958510047b78caef9fb73. 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/GBADG0800876.