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 0x1519ca6216d3a223988ff2781e59a3f1ea99f132ef4a6de6a3fbc3348d9988fc. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcac95cf-6f21-4b3a-8db2-8c81cd769395.json and https://artists.proofprofile.net/proofs/artist/fcac95cf-6f21-4b3a-8db2-8c81cd769395.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 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 0x4b6a7ad4743c3caec5888b61a54e781fddc008286dd93c58cc916be045cbd482. 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/MYSM10500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c61b6edef3f27bc3ba964e1fdc3fb8bad40308faddf722d1b8d00126da5387. 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/MYSM10000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaf0925100cf53f91f01fd16ff2b45139f74d857ca128cc3d2c4fcb8d7473ba. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/MYSM10000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3186620e698395a0515978a55098178fc71cac6eda5a7577d2cb56df2bc763. 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/MYSM14200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced6d13fd4a9edca18aaba3e872a5f0616fe8aa1c2bf17dda79911601a192831. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/MYSM10500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab09d3298f504d0216514e5395cbda9bb0b3210dc1c6747cfa9ea28952504b7. 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/MYSM14200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d0afce128755b39826d0a7acaede7a44753f779ae496509febc8e430580a6e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/MYSM11201082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65d4687e9daaafc913e17eb9a7af464e602114108eb5292696d33e96d0d75d1. 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/MYSM19410022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18517a59063ae71968bdc98aaddbabf0696df0d863afc7ede20d41448ce4e310. 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/MYSM19310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf459a90a1c9a6fc4d86c2e14809767596fd976e30ff9e05878f9794caa405ba. 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/MYSM19900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa130f64fa9081ca246f61903d2920f478bcfb09a5ab66815b15acff7ad003b46. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/MYSM10600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd15f59a1161a4767143db7b6dabc7b472531f83bdce76abc4bf8f42fd3d852. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/MYSM10000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99539493325d9e231d61d53ad76d8b4034c3c1bb90e5131ff16f79611f126e87. 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/MYSM19710011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8ce0aa85f0f5395a6f33a9a01e69eb4301662876947606a1cb0e23fb615bfc. 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/MYSM19710012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf4a75c81f12916307fdc60afd979a76e261cd73ce25ec6114032c202ea75b5. 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/MYSM12100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661358252d3c9cfb1ca6e2283a254404da6664f96713d3abc9dcb380983da2fa. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/MYSM12100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce847ddfc67d2df74fa02c1d920c7d80efcfe8386b3a94fbc1f2f049ce7e6e9c. 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/MYSM19610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49b02e4502681582104bfe3e1724c900f8a4913da99efa3a8755b15a5d3022. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/MYSM19610002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7bd3e0c4cd3a63446b2c94c525667708385e54694389451a98207ddd95e808. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/MYSM19610003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21da74017c5ec229853833f85557d5f6626624bccc0de612f53b5c84f716a911. 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/MYSM19610005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4eebc01b56b6d95a120047509bbce21d8ed22e160887d14e357b9c29d3ac07. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/MYSM19810013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e88178871d7dfb9379066dc9104ac6abcc10b4a131e7c82cd29104edeabfd8a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/MYSM19810012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce847ddfc67d2df74fa02c1d920c7d80efcfe8386b3a94fbc1f2f049ce7e6e9c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MYSM19610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4eebc01b56b6d95a120047509bbce21d8ed22e160887d14e357b9c29d3ac07. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/MYSM19810013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8ce0aa85f0f5395a6f33a9a01e69eb4301662876947606a1cb0e23fb615bfc. 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/MYSM19710012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49b02e4502681582104bfe3e1724c900f8a4913da99efa3a8755b15a5d3022. 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/MYSM19610002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd15f59a1161a4767143db7b6dabc7b472531f83bdce76abc4bf8f42fd3d852. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/MYSM10000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e88178871d7dfb9379066dc9104ac6abcc10b4a131e7c82cd29104edeabfd8a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/MYSM19810012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7bd3e0c4cd3a63446b2c94c525667708385e54694389451a98207ddd95e808. 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/MYSM19610003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700cf1aad0778f9afc7511749f909c28d4fad3d9c2dde5f0f8b824ed780f7984. 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/MYSM14200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7041334f5b772bbbc41ef961afe5446cea5d897e03e49b37a6759f2cfe9a6711. 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/MYKR11301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4030889de1654eb67ec26a2ecf145d01e7c2a2f96364b54cdda91c492de5f999. 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/MYHQ12200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3acf19ebaa8395ea4831e3a7df6cafa4660ec6eeca6edb3aba27b0f86528af. 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/MYSN14200432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc9e0ebd98980682ba4e61655504dea3a7353aee87d238fbf9497311b07c648. 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/MYSM10700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce847ddfc67d2df74fa02c1d920c7d80efcfe8386b3a94fbc1f2f049ce7e6e9c. 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/MYSM19610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43595c0850f29179cc21d8c930026a9d055083fa97540d9a45d69b74602c082. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/MYKR11301409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70258219b0ad75b945a14756ce916fdcf47ffe4fa8580af47ce59594d97537f8. 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/MYSN14200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f885dceb1d49f8936f3ca6e2c07ce9cc88613bb2d83ca6009b2a60b6a7ec6. 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/MYSM11100928.
투니버스 파파독 (Original Television Soundtrack)