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 0x62c5d0628781277ae877f4e1bd7b0430cf84eed44e2d676f913261cc242b410d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c13ed78-9611-4686-95e5-9dac4e4fcfad.json and https://artists.proofprofile.net/proofs/artist/2c13ed78-9611-4686-95e5-9dac4e4fcfad.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 0x6ceeec6a4bbca5dc5dfb61c1553578e51fc2cd970e1f67fe87dff571576e7b75. 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/HKB730411101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d963dd17a71b99089d1d19629c1b8036d0d844ffa2c5b5443ddd6a423fbb16f. 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/HKB730411102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa91dad9f283242f80aa0cbdc73bd13a1d0e417a5f791fc067bb1b416ee8b2. 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/HKB730411103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f88dd8446dbcc1c4cd4fbdd5eb4d763e28e605f6157ccdd059f54793c18396. 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/HKB730411104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132d6551758dfe67381a81c35927678156ca5b543baded6b3965a608547689c3. 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/HKB730411105.
Interlude 1 - Piao Zhe (Floating in the Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8057f95aa4b663a1943d23c33b0843570ef3840fba707aed22e177c51f8ab761. 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/HKB730411106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5bd35aeab61ade982e9c66c524f6c9a50bf53f377af5fb6c8d174dabf04d01. 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/HKB730411107.
Hui Yi Xuan Zhuan Wu Bu (Memories Swirling Dances)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea3b7b26af18029fd36e38ffaed16fa2e7f2d6b362170ea3d6d6912fd7cccf. 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/HKB730411115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361ff641d60a8225ada5b67f288f2139e1aeb6b477df6f8951dad61ab03bdfb2. 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/HKB730411108.
Mercy Mercy to My Melancholic Life Journey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ad99a64cd2de242adb96d30ad4042606df24f7f63819fb75d898d6b55a5b0f. 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/HKB730411001.
Broke - 'Wo Men Yao Yao Yu Zhui' Station Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10081e311d5536065b4ed22c5bea1851dedbc7b0cc46c54a8860a36c4552b53d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:50:56Z), 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/HKB730411111.
If No One Speaks Of - 'Huiyi Xuanzhuan Wubu' Wine Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efb89bfcd08f04d04a095a6c0188a5d177f8db2f233d25ee27b3621f6f352d3. 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/HKB730411113.
I Always Love the One Who Doesn't Love Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3543c690a80d3c1876cf278e800a738124d8fc15cb8ddc050c03c253232660. 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/HKB730411114.
Mathias Excuse Moi De Mon Francais Allemand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92833f77cafa823e1c0a06bf5489c342a059ab5bfe1e1fc2868dc77e0f45bdf7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HKB730411109.
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
I Wonder Why My Favorite Boy Leaves Me An EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccbec78f6b35336d81a3db3ccf3d78405e1a86583c41d076591265e8549ccb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKB730410102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f6dcad04820d7119cd701d361f2e0ab82edede985983bee055d61e126c415e. 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/HKB730410103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d26df7ca6a1708906af5a41af1a3ad41585813911f29ea9b1120fd6bf9e465. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:09Z), 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/HKB730410104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5640d5e3f9dd8861ab6dc825b2bb4130fe305cd4eae0baa6315afc7bed0b5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKB730410105.
I Wonder Why My Favorite Boy Leaves Me In The Rain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46c3b5454a3dacd549e81bf6b295e672b190fa2b4ae3e4c342c91bfe78e24e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKB730410106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7289f30da03d28ecf7a1aeb632e3171cff01c266414724f37b786101a3eba1c6. 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/HKB730410107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19daf10062e054dec8327a857644051ce176a5e8604869f121fd3e31dee5ec28. 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/GX8KD2316847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb433bc205eab27d85769581299cbc01e12c83b7a35ba3d0699c9870bbc4a661. 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/GX8KD2354069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a1cfcdaee6e1bf81557094a94f54ee033c9402945628ff167eb18aa74a7128. 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/GX8KD2332179.
I Always Love the One Who Doesnt Love Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806daa76fe879c3b6474d02889a3878992923656945081111ef5518a4504d324. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/GX8KD2302051.