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 0xc30dfaa266387b45fac1e10bc41b75e5132286ae570a86153bb79b3fd928ea94. 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/656c1b80-2674-4ff7-9839-254d1fd106ee.json and https://artists.proofprofile.net/proofs/artist/656c1b80-2674-4ff7-9839-254d1fd106ee.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 0xf1aadc79a2e981044a09c5da01c87db6087a05556d08d7bb5ecba5392e2aedfb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR26V2070489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ba2cba46950af2486318964967f183ddd7397b46f02345de1d811c1c3b2e3c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:04Z), 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/TCADZ1879069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fc3d24dc2d158e6eca1d172ff0fad54f3ad0f4e5099c78528c6e0bf8194031. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/VNA2F2300465.
I'll Never Fall In Luv Again (Tzo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c432294317687710cbb2c3b59c7fe8f7c658ac94fe4e1b3a34cc77b513f3bfa. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/VNA2F2400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069558ecaeeb66790dd4c251c2a954a9d6b6a9257ace2b59e4380b72c8d6e12f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/VNA2F2400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe141aa48939092b28915c73cad5ef7dea2e23a4c859ea07a9bc8958913873838. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:22Z), 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/DGA052007277.
Tiếng Pháo Đêm Giao Thừa-Xuân Tân Sửu 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61760d386826bf752d5b7eab8492d6da11245dd29cd8bded26e40b3f9cb9dd2a. 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/FRX202148749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f20122b552beec70fe7a5b0a796bfb1fdb2ee49c2526bb2cef42265cbcaedcb. 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/FR96X1936586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61760d386826bf752d5b7eab8492d6da11245dd29cd8bded26e40b3f9cb9dd2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202148749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb77addfcf5ee77d7512fa4ec4995f24a3d42b4985716a85d1e50967b35c91e. 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/VNA0M1929930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4e899a480adc3706fbe6f9c91ebbd3e09369adfa6d68744ca08c3b23e50a3. 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/NLD681903516.
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 0x1c27af1b6431c49572a57ea2a0fa5130fd1718b97ff25b7c153ac44f27e712b4. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/VNR011032787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0161ed06b56fc067884c30d21b99857b7f238ed5c284b975a4861d5f204c2737. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/VNR011032790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa27aec7850ed064c1de6a26b1204919f7e922ba1e6ec9c097a1d804a398a4b4. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZFYZ2015525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e9194544b1f28b9dfe0284eda28285404143db5443b35bb914979288c04bd. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZK6Q1949530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a83e0e26ad2fe38f892e52f0cc4c5e30a3c4e6605bfce08c78c92b69ba2c323. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/VNR011046955.