thumb|220px|An example of a chain whip The chain whip, also known as the soft whip, is a weapon used in some Chinese martial arts, particularly traditional Chinese disciplines, in addition to modern a
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 0xedcfed2513489124d47e7be261d31220b9050b5e55430ce4b5594a23b0e838f4. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe8d4aae-3fec-42c9-8ddb-642adf2804c7.json and https://artists.proofprofile.net/proofs/artist/fe8d4aae-3fec-42c9-8ddb-642adf2804c7.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 0x32e0727d8f09d3e1cf8dd9b8a4b7309ceba172e3f9925f15bb4d075f8f8e718e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:55:53Z), 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/USA2P1840844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614697e2d6a1175e3e44a830a3f431acf148bffa9da2763f96506a2decf481f4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:03Z), 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/USA2P1953265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b58345bd92c7535fb924941e9ffcd75c5bc1618f9089b444e398d5ef3766c3d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P1953266.
(I Don't Wanna Live in a) Fucked Up World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a98bef487c082ff3566f1b760b94844e714f96cf157f0339b70477844861d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2P1953268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8f85fe84084f85af2a39cc354de9d913c93476951792e44dbb8307a80816ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P1953271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a15eda3410e0984b1b690ed605c9a5c45578443ec41692acf9286caacae56d9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA2P1953273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5728d51146bf14e23389dddfd2a644f15f6825e7c012d57c8b74dde8f3458a. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:55:25Z), 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/QZHNB2153299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe83237cd4299839c589f28fccd992a600836870d5ab8e83df98f67ede8bd5bc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNB2153300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332d90c84f8eeee37048f9fc6f9440e6ba4a99ec5fb790333b10f2a5e8bce430. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNB2153301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc6fa11e6e4c2f406c45d68ea8a3f9ee51337e66b2bd11f12245e754a382719. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:58:51Z), 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/QZHNB2153302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51554acfbb69cc962fa141f21b7c473b67810bc042ff04762d61bded7c45420e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:03Z), 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/QZHNB2153303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea53dadef1cee22324892767fff320439f23f2d5afdf9ef7760156bbcf11b9e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWX2300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409dc4051cb875348766eca1c6aad49b22bdcf94cfbb1f1f11cd8db49b343269. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:44:44Z), 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/QZNWX2300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35850060ea8f21d3d97d3f7a278a8652b6673e3d421cde291ecd20068b795ef. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZNWX2300830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f163401c25cf3d373451c3aca9a5b14b9b2e0537c6a8c77682a9bbfb30f6941. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWX2300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec85beb460bba48d6e813ab6fcab10197eb6b8817e0b865d821f4f1963fb60d3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWX2300834.