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 0x970ea24bd97e5f0fc20bd8ea80ec66e6f1193bf1989fe7f280ce9b3c09dc2f61. 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/4eca60dc-b459-4948-b621-672ba19ed0aa.json and https://artists.proofprofile.net/proofs/artist/4eca60dc-b459-4948-b621-672ba19ed0aa.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 0x7eab0022d26031290200fd0d759f0f1977bfe5f264462ddad1ed8f6753a4615b. 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/TCAIJ2419520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e18d88a5491c7a7681954b8f0e215a5be43847fe26a80141fc492095fdb28. 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/TCAIH2471594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b9e3d2ba9b2456d0089f7c342e45e87d536b0746f8ea7bec7681b6d838ddee. 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/TCAIF2409646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b80954845939f94cf5493d58f41f261fe55d6c6f36fe94755dfe3c41d3afae. 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/QZMZ92451777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8764f8f37aff468f462d8d91398a93e09bf53b15d4f3bcfcbbedc3eba0f30918. 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/TCAID2417948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49db3305772b58d6f95a9e81d86f32246b1cbb85c0860fb5af78433b06bc461. 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/TCAHZ2457161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c589e42e1763fd166665ee0d223151f55b9116026ed96c50b41c1e9959300f4. 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/TCAHY2495191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dbfdc7d97ea385fcfc7d4ac79d2661aa58e7a04800ddade2741eac7d6e6c10. 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/US7VG2496244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d92955f534efb1d4c88329c192a3f291a552f09efad4d8989cb6d3152998c7. 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/BK4DA2401712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedf35aea861d8e7a38f7682239dfa8a0c8ea847c3e147317ff157d2043858f1. 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/QZTVM2399445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf614df832739beaf8b73d653a8338f67ad7ba65f01736a132e287a38b5d1331. 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/BK4DA2321626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaddba4c0f6782be327b6c15e8995906ab2542c9fcedd5178bce248206ec82a9. 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/BK4DA2318777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656023374358136ca974c1fb8f86544697cf421bcce78f833185f7efad7b96d7. 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/BK4DA2315258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393f1db22b664af82aaca83562e288f2f58a9a8a4e68a3cd5f65991d4921d9c. 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/BK4DA2310193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51e671b58500af5d4821fe6526f558bece33635a0795b3aabc5ea3594412785. 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/BK4DA2307959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa5a401af3e6403d860adb0d1db9d53a5a14d45972fcd01e4cdb6d66656cec6. 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/BK4DA2306383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c51eba40c0641af4c73a21420940ff6e6bf15ac0556807731124aeb0e5c69cf. 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/BK4DA2213880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bd55cd36afc15f6b1733d68eada1155a51c46588d0c476c17ae351cb8b6276. 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/BK4DA2301625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8bb11e3beb6901514b4ebfc3d2a0e31e3814ac8609621ecf43bc86bc2c763. 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/BK4DA2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb20851f70e49161473ee3ca4c9de05d836bd61713300e180020e36c896d200b. 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/ZZOPM2237474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2224353c75d6e3fa6a8861c182a4a1452693a76f64f3f6863f4a744627d935d. 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/QZHZ62294586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b42592b239245bf1a36bbd3c4b4588607eaec93a10d048cdd9f68cbfbf3bef. 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/ZZOPM2231396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e61394c82050487a5a9f3504ef98635610047f00ecc8651980c460ffcbeaa5. 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/ZZOPM2221910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97339c2d0cdf56dee69410444bdc233c522fc36ed6563b4653cd6ff9b7e2b71. 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/ZZOPM2115627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71780e9e45f972aed593d863474b5143e512d785931347ec37cf9708d0867e65. 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/ZZOPM2110074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050adaad4e78800bedb64cf4db6c918fe707b9539ffbb48040e5eb82cb2437a8. 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/ZZOPM2110075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8bbc75a0ffdff58e3dc0c33bb81542c63bacbeebb60a3799d32d20185aec8e. 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/ZZOPM2110076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0800815d88103504cba492693ec5abd0134b12c8b230f5877a53a6005e4bdf31. 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/ZZOPM2110077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a63592f6f1641f7b3ba78f4ea79376307995f0001653e255668ac702d393522. 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/ZZOPM2104675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd7d160aa10ae9ad20d25e5d17a3a1da7b105198fa26a3ce78e5180cb2f1445. 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/QMFME2021405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18562911cc1d99360102de64cd72206b68f78d37786da907637f05e04b96085. 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/QMFME1923787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8497153d26a843acde5733faee2e07e8f6f52e54f47f0d889b9368be849af0. 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/ES5702000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706119212fa4bfbd7b8b2f3f85ff3b3ab30d528fac8ea4adaed92da2a1fadc69. 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/ES5701901760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73117177b17ae85d6a8d20e5ea61f25879d3c3e0f04fe71ef1b49ead9c0e107. 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/ES5021901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf339ed15772a940c58898c5fc542e3a1564e86c439a6a142bf2daf281f154e46. 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/MXUM71903065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfefe96e3b7b04f17130ddfe9e2fd8f40b7e1a1e04cb507c764e346d5d6a75a. 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/ES5701900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf339ed15772a940c58898c5fc542e3a1564e86c439a6a142bf2daf281f154e46. 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/MXUM71903065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8017dad2b32c8f355602b36a886c0566df1c81cc3692e9ca1dc0858a9b1dab2. 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/ES5701900833.