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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bafc6901a27e49f726bcbfb01e0b42e929fb346b7bf85846793513f45874def. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91ff320d-185b-492f-a678-a234faee775f.json and https://artists.proofprofile.net/proofs/artist/91ff320d-185b-492f-a678-a234faee775f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3866bac8310486c642ac5509d4f93dc9d221a58110edab52d746872c6f14e38a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DENQ81300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f16e4485d78c856c58eed72d709ba507fb077967198820be5b785218bdf75f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DENQ81300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76689adb7cae65e9ae53aefb11cef0fd4edca79f4f9dd33666d7941427374ff9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DENQ81300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3636c99c101b6b13a4e3fa3179f5e915af7b4e5657db3599e821efef35322343. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DENQ81300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ab7b5d6261cdfdd67df48a89311003621ab7cefb1604e9b91c17141cd9651d. 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/DENQ81300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf62ec1a305ba9d90e2b2f8fbd6093eeea95f31ea03be9e7a01451d1b17ffc7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DENQ81300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ebd5f7e948d78a7e6d7722191a5f641f3b99007093cec85998078b9d00d1db. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DENQ81300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d5f5cfaf1cf5d1f5202831c05482866036498a1f7fc7031b6507d9cb688cf6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DENQ81300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0628bdb3fcab865080dc44a0759ce0d31beb4dcec14b6201357223f24eaaf7bf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DENQ81300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2723296bb9b14ac02991109772f78dbd9e80607e73b8fe2059dc8b26bb58e74f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEZ651338758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b816bc213751608cf21032b153907e2504cf6af53ae3d9e2e71235089cd417e. 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/ATAA90800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f4ebb6682e862af2e83ec83c202f95eebec7a2568c72dde79f7d51b71cd522. 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/CH0011300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc06ea20016d1df6b9ffba77b83335aa00112bc354b579981562208a451cce5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH4101403805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c58b6bb1c2fe2f7b0bd2ee0f023ee3c212975fb3fa375d56762ae97fded82d1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATAA91400204.
Für immer Immer - Jr. Blender & Tiny Dawson Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf941ad97f50a450a419968f877cb86b042cf8598dbd5d9c2c08ee511b2c951ec. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAH91400004.
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