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 0x6e06111ccebd7f5855ba3369b568526c9b38c79b90bea2fb5a9866ef119231b3. 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/e8b36776-6cbf-40dd-9a94-b622a80b04f4.json and https://artists.proofprofile.net/proofs/artist/e8b36776-6cbf-40dd-9a94-b622a80b04f4.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 0xaa57725d0e81e03a00f587a1aa3197e91f08f364851f9431d2088e5c90df535f. 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/QM6P42311669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732d6faa2a22903118626bfd58a47a393fbdafa607763ddee4d48c30866d41a5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:07Z), 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/UYB282311000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50130ea99b0acbaa661b969a6b210af79b6af0de0625058202fa8e2584007b33. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMFMF2225106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec752751fc29a7b92f77bc45006655879f9fdc84afbd1fa354ea865c549f495. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:52:31Z), 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/QMDA72285259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8901ce200525e54e4efaa50fae9004ce4845992775b9e56aa6eb6d13742d1a8. 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/QZMZ92221098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3207a049548485b0362416d2827eddf0ef321cecf52223572368e3f752a295fc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMZ92221100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32898af96abd1d4add5b31eaec37fa63136d11657becd77aca11ca2a3478b52. 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/QZMZ92221101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1892c7b95d6658099394a8854e319953f012bf5a8d26ef9d99045c2b65af931b. 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/QMFMF2145403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbcb05843dfe4615aed44c404b2e8a2b7bbdfed084089cbff952e4809ff6b9. 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/QZMZ92058538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db9a3e99236a333d095ae8df66e337b66c6f74be7803b17721f8e1dff9cc5db. 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/QMFME2190060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ceddefac049bd4de2e2a043f52425f49efd0395c8733c4c1e7f3582ee0f2fe. 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/QM6P42174111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5377ab4ba5b190b360aff43ed5058b1fcae52cb1b9ce32b0bf93b941ee7b6050. 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/QMFME2192417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67026c518901fb686719f94648222795fc1c02e32e4c790a1776577c7d24ac3b. 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/QMFME2190062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b6b1190c014612e3920451db474f18ec6153a88422229287069b563dd6bd2b. 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/QZNJX2016407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0846de59011ec5f18caaef421ea5c193ed007955efb8cb5d066db144e1115e1. 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/ESA011990280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b80bc4cb4c99c410637fd738b0aec0e63c9b4c76d2014c51629c128c7b7312. 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/ESA011704053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b50b1e5ef94da6e527fb0df3bf05b4a3962f110b6e42c142f20dcf9fa5dd99. 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/ESA011704055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114d3134abb5bdfce3b488b154f8c454a0f6006355218365beba522bc696c985. 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/ESA011704056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba658c1838a3281475d8067d74650c06668011085675d6a8c9bc98cced27d66. 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/ESA011704059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b211398bf524a825c6358ca2c8731de192c372aef216626db9bef60e8afb78. 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/QZW9L2253817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42994d55dd9b636c7cfabbde2712bf0e9488700f19161a04c03a6f1cb73318b. 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/QZW9L2253818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb120f0792a285c54502181b813609c17d2baaaf002ce5ddbe433ff6632495063. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:41:31Z), 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/QZW9L2253819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ed53247f2a47bec5e810fa21d162874be12b045baa74d6e36b10bb5e97e64a. 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/QZW9L2253822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec662f3577544ebd52209dea5843d3072533d33036173fe4b4541656de38715. 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/QZNJX2393327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c48e5adcd9d0aa4a69dca3997877bfca152324112d2029bcc93c86390bd5a2. 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/QZNJX2393330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a362880b02e7209f90d38fe1ddf0541adaadf249236cdbf2c300f03930fbe2b. 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/QZW9L2226896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376e8998256164bd303a0625fec8caca0c118b7c69e934ed5d8c3e5b08ace291. 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/ES64E2203684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbcb05843dfe4615aed44c404b2e8a2b7bbdfed084089cbff952e4809ff6b9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMZ92058538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b635d1d505b709e172640e5bfe7865d85aa3d8bf630721ddd1cc62ec1c47bb9. 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/ESA012048056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3991b08f639e88dbfaf80659b7fea3c730da0959e0b8802156444fabff34476. 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/ESA011948098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0ec6065edea4e54271972f510474262d88a930cb3772f7cd4ff13df1e54ba0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ESA011911117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd302c3975a5b499ef96ec7d3da5108d26c67f8781338698b23faba82259b2cac. 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/ESA011916147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa550e203816957566064f2489a310493bca7955c5bd28150a03fc22363ab48. 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/ESA011904233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aefb51a55cfa11ebe56eb3d4fe02ce9c2f6256a14694059d9f7b3f60f2e74a7. 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/ESA011916148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde44cc380630cca665bcaa07c9b5affeb5bbe05c3bd962d3e2e49eb475945dc. 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/QZ5AB2477727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bea063fb20fef6d7b3ad7dc4369636152c88615c9c6298e38f702dafb0dc84. 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/DEQ121748168.