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 0xa52dab4580744f4cbc6784e2032a1f723d582baf136423adec098735c260c5c8. 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/3b379446-267b-49db-8763-5655c0893ae3.json and https://artists.proofprofile.net/proofs/artist/3b379446-267b-49db-8763-5655c0893ae3.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 0x75673c684c3d469dec412e8002c8dfba0de91444b58c402f52251f1a6434e2b7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:34Z), 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/GBLFP1773513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb198d66f5410e8b54c2916ed5e1a93dd6e47678b8a40aee5dcfa628c112e59a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCADO1885016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a87d07419f05c065fde31de026fe7c135156645dc9b62fc377b1b60b41dc9f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADO1874019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d7a95da74d1315ee6eebad6584c58fb6bf0d9fe067be52ad6863156efb7e99. 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/TCAED1965681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d270db0f25b66e2c7af2d10a7857219a1b858baef285486e624f4f65d680624. 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/TCAEC1908850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba9f6481ce816c2e243e0848f6ccbba6a7e2f6335d13b6cf3e7f7845bf363a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAEP1906891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018c2ca50fdf94e82120c9424b5d4c418747d9209200e1ab03455168bf791d89. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAEP2060808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fac5bf5c0b21035574c5fcc691621f272cb97055f795599e10f44a2c83375b7. 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/TCAEX2089788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfc014bb60c4b596e6ef4526e3d78a5183119fcc36967ecda541403acdec95e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:33Z), 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/NLG662000517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac49072148a050512fa5835e5e4d96ddd1da8773916e024a752e652b1a5e5a98. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFC2028243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8267547a051fcf619407cf8da407e3feb045c86cb3ab513d984264993b473af2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAFD2037582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061f9c13037c1d8e22d276019be9b6644a438823f78340ebd248f205b0891788. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAFO2186999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243aa15486cfef58d73f88ef18b2dcc1a440ea31b39767ff60bc23fa9ade32b6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAFX2143811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685181550d217ad2708a474afafc6e123c74f3c68dd441e8841650ba46b2d270. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/NLA802200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698aa9275928a77fead723f4b9c4a3f8711f78cf8c6af6361f9d362381ba0c79. 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/NL1VU2203109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97904aa7f4e2fc6d6e8d36d3806402592f820e28edc6483a3432ad6b41868d8. 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/TCAGY2342124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985414249c77176c2c4fae79e4178efa0ad86053b0f4ae149c8d111444ad6f9. 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/QMFME2398612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf611798b88934c3dd5b6b162d01854fac49b27caa3f2ad24eb20b8f4d9747e72. 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/NL3GQ2100621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d870608a1183590063d3c3d6ed6cc0714cfb560ed909e9d4c4d2e0a0026247b. 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/QM6P42053967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3635a87fdf01e79f88e881a9544f234488754f379a77a266200173b02c0fbba9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6L2183076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22be10034b458d9c15d2ae08bc82fb83ad498d184df31c8ed658540d1cb5982. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLG662100411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a924438512451df15e4530e96f668fc2d3918b04610085fa76428e5ad57610. 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/QMDA72223704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d870608a1183590063d3c3d6ed6cc0714cfb560ed909e9d4c4d2e0a0026247b. 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/QM6P42053967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b69902a1a1d7d5e7f5c080618835930192f1d8de3dfc7cb79383136a6bb6d79. 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/TCAFT2155635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18cecd983dcc9cea6f45cc8b23f37b17cf4107bdd4e4f8f095ff882fc8447bd. 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/TCAFJ2182489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc996690275eaa2d7a3fe58ab8c47942a4b728c8be2d151b1a940df35db6e01. 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/NLG662100308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cc4bad30a7f9e85cac079b8ff15bda212e2d7fc4926d485f46e0f78e8f1f97. 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/NL3GQ2100622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a1fcb8439b98e72046796ef4c651667723d7e29dd197ad8cdf94ec6d665a2. 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/TCAFB2016694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcac70b82d9a0ae750ce99e4e4ac5e593bf9910b406a00204d3786fed7ef88. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLH211800126.