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 0x553c4b30df8e39d2f00397cd7ae03df1ba64c1ece1eec74cc56a8ad52629f0b3. 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/169b8247-00b3-4ea4-a244-cef9681616d8.json and https://artists.proofprofile.net/proofs/artist/169b8247-00b3-4ea4-a244-cef9681616d8.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 0xb086b428e7e0d270e82ee49852dc7e05f5bb8a1b164afe578028aa948ab16285. 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/QMEU32116226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9983d94ae998f59e8f8ea7e9d98fc05821ceb969def7b42ca4395ee11ea863. 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/QMEU32116227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b02903da35313c8dcc7303ff2775baabb01697311ca7f6cf887987958199f. 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/QMEU32116228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017896d38f7e77e1a6b2703e44e92055e8e555ada56bda7a8db9f3321c42d6b. 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/QMEU32116229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddc36d81da8d4513c3fed1d41d249ae872fbf69950096668daa7fd955ce47b0. 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/QMEU32116230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543753e7ff5ee2524cba7ef5699533f76a59eeb34f7913618d7dd0b0503baf83. 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/DEF272133002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e9edd2f22e62ac1206e1fda03b58276dd29098402201db7131831fa4275e07. 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/DEW259300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8f2d51deb57b1af46eda285e8795a085b633b521c52597b5ecaf584ec8573. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF272133018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c62d5559059d813215aa01e1d9dcfc73d31633fb5c146a6333c90f68bd2c20. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF272133022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07104ac0e40a08e51c34bb7c6e8601f670c61dd5e7472ef78e4367a29fb899d8. 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/DEF272133024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34797a4ffbe78bd69642155e655a83fc013adf6fbf497334746af62c8f535aec. 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/DEF272133026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5478368cd5fc9a49e3a5dfcd9bcab2891cf4a2142841571f420ce3a57412c7a5. 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/DEF272133028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b753dfbee389529c36eb3285ce95daa580576e79cc03d9a2bea80668f82075d. 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/DEF272133045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdebd0dce8f6b34688b10ea962197710ef3ad6362ee241da339a4e04cb8f4d91. 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/DEG932401699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0012f658086153af7595b7d46e53e3d4978f226737bac00edd205e6310b998. 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/DEG932401694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bdf1f4ee3883885593ecaa41a98263bec55a02fbd698fa94277fb948a6ecaf. 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/DEG932401695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0479952fe070dac25d1079fdc2d93d809246f4e9580e496c07ec33cfd60d4fe. 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/DEG932401696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f44812b1a7e42afdd9d343cc21737b7ab98f483cc7a0b1c8813c7760ce085. 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/DEG932401697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdee1086d715f1e45bb24c2798a182b0f7e20ba85af4a732c2222095db1d26a. 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/DEG932401698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042a631013d0259eacbfeb9f06cbe0cac60062fb098122c79c22ec30909a1474. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATE692230803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ed0e568c960ec703206f31ada7f31ab19ce68164d3f78d425dc0fa6934d8ad. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATE692230805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b53568cc629c808b27da5ab728f9a4c738a2652a7ee7148046f1e42888462e0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATE692029001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc0d02cfe917a8c7eb3f16e6a759264598c90e8fa59e5957d60b08006bfd2a2. 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/ATE692029003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd108dd05d14d82110e5afa00f8682c7b2f017104e481a79bc291a489f29e5cc8. 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/ATE692029007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7813031be5598ee2770068a5284be11027400fa3ed9cff0ae1b71e292aea3c. 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/ITFKB1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131617d82edcc567e325fd244cb0fbc9c19593a614a64ea80ff65db4e76b64b0. 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/ITFKB1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb203faf580a0f7bc5dfbef99a879f0c38fbc1fbed2dcd035d1dbe1d7416c3a74. 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/ITFKB1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0479952fe070dac25d1079fdc2d93d809246f4e9580e496c07ec33cfd60d4fe. 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/DEG932401696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdebd0dce8f6b34688b10ea962197710ef3ad6362ee241da339a4e04cb8f4d91. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DEG932401699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd413d793bd7099daaf4df62e59ffcb10e3d471d8b482619a32c71e56094f63. 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/NL4FF2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04757cc3379e3dddd205ead1555d60876de400d34c9944541e6164b9a9915f6e. 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/NLZ8C2300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd5b9b15e6d484d604a5edf82edbaa59eebbe16d92f8cf2bf71142359986c8. 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/NLZ8C2300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f795005de45edab4bb9fdab00f8e63b57f556d24ed246c626aafd9eb5f69316. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US2J71904502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cf06df71a8d3147377719417e0d90872229a589bcd4b8cae8c19857bfc3c8b. 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/US2J71904503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91d9b38fa179d3f8e1489c1113e2f8edfe5cfc700ca7312372191379379484d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/US2J71904504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d2776a214a69ee967f9a3b3c35a91bcca53d56cd8e27e6ad747d98cc94b5ba. 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/US2J71904509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04f5e803c4c3ec0c0215a3efe4442742072bffd8de4722b7b84467ed1967ba. 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/US2J71904510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acb74fecd6c04245e04bf536e5e4d88a51e52470e47badd542dd85f41deacb3. 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/QZNW72264927.