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 0xf7b5baafa3ec05d87a09efa993269d9354c150c3de7b4d549916dd9f8a204357. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6427303d-22a7-43f2-b82e-8411cb4f0aa6.json and https://artists.proofprofile.net/proofs/artist/6427303d-22a7-43f2-b82e-8411cb4f0aa6.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 0xba33ce2a1ae52c76a2c75ae257cdcc0a7291fd5d3ec55df537a38f2696a44032. 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/QZTAT2497024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4b60aa2a5d49df2e800a53d512b88187905cdb0b4dae42acda9593ad4af17. 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/QZNWV2425512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229a80d7b4eef85f5ee247aa0ec2e37616b88fd21626d2162d22ba055defaf04. 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/QZTAT2497026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dce30b01b4dac8c0585797088b6b0f5453e418b22f2c329fe62c15b63a7ee7b. 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/QZNWZ2405419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec114858784dcfc77316f5eddea78d94678d3f9c3a36a13750505310926db5e3. 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/QZTAT2497029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa4da1208ca04e2078d81a33614a8f8404f919046ad371a7c3c7f1d6157c26b. 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/QZTAT2497031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3167d931c664b3fac7e235ca8638c6ff72d0dbc710f8c8144213f67781c8e95c. 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/QZTAT2497033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7423e8fcaff1b3451a0be0d639910676202839e6ecf2781da42ae4568f7282fc. 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/QZHNC2321424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e38ba774dfc4526de3751bb2c731c31d57fe70ed39e34f3fd22cd2e5210290. 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/QZES52332126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980e8d72bb22f3c4f97624c5d7b126dc103089a9a542592cbc29b2e04b0850d6. 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/QZK6G2341725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e9110b7e7d4cda870fd8233bdb9ea87ccb8bc74eb79eeef307dc4fec5a8aa. 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/QZK6G2341726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696523ae861f5aa195a82b52ad80dfb14305e3eb896df02ccfcfa2b360f253c. 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/QZK6G2341728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46591b91a9235c49e2c23d129d48c2fee246641d672a3a3e3b0ef2e1de10a6f9. 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/QZWFJ2451515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dce30b01b4dac8c0585797088b6b0f5453e418b22f2c329fe62c15b63a7ee7b. 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/QZNWZ2405419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4b60aa2a5d49df2e800a53d512b88187905cdb0b4dae42acda9593ad4af17. 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/QZNWV2425512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5769d6ff76d69ffd8cf37d449d7558338148d6a63712251aaa374ce97b40c5. 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/QZWFE2306484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982d5c9a4eb0592bdaab6cfe1ca60228a09305d4083cebe6fb0020cea685c3e1. 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/QZWFE2306487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0e306a622d191d12435cff254fca82ee5979d66c6fac393baaf9152af55a1b. 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/QZWFE2306488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee644f9afc269c0e7321eb6649cabf771406cc6bd22e298ddb197d68ebf32e9. 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/QZNWX2345426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7103a47cd6f7e5ba15c801a111db71aa9db0361c11539dd6788231904970c54. 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/QZNWX2345427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d201c4add788ccf678f2343f12d5503db1f6248d2246c8f98a5bf9c4884693. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNWU2358931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d9605cd066fd28a1885c447c39b0913b74d7f168e09a61abc72c012746c125. 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/QZNWV2362182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5eda2d9309a854d8da760658ae94d1e2fc6aa1740fa9bcc1f354dc1e6e529e. 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/QZNWX2345428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d9605cd066fd28a1885c447c39b0913b74d7f168e09a61abc72c012746c125. 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/QZNWV2362182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d201c4add788ccf678f2343f12d5503db1f6248d2246c8f98a5bf9c4884693. 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/QZNWU2358931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7423e8fcaff1b3451a0be0d639910676202839e6ecf2781da42ae4568f7282fc. 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/QZHNC2321424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e38ba774dfc4526de3751bb2c731c31d57fe70ed39e34f3fd22cd2e5210290. 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/QZES52332126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f6daad119856e7fe7a008c3e89c96790bea3301c5da1f478e35f259969e00. 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/QZFYX2165601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a4c7bf66bc31467ff1c157b45516c0df6049f2cc304e2b5e696472caf2ae80. 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/QZHNA2047648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5075c8a036e3c9752fd7134bf597c2332a53d3f8d8b44bb79697fe8be51eb. 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/QZFZ72089416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb53e926fba54a2c09930616b69ee11fce86a2d92575ef4368ee63a426f59c. 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/QZFZ52049047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc287c86fdca3b46ff8edbc1809b314f35bfa131abc8902d4495d6ccc3dfa7d. 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/QZHN51996257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c85a7530dfff1ed86db8bb9b93319f4533791641fc1b31122738768cea244a2. 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/QZHN71907320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4fdbbc31b4906427fb4084676d6ab3a4a4c1125beaf3204dbacd80dc6f73fc. 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/QZES51859324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788faf363aa493579deaa6a9a4cd45120819d08055d0f8869ffaface720081fa. 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/FRIDO2413082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9cfa3087b72af95f3333ed44a67ad49ed88c4129dfaba7494254b2d212b269. 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/FRIDO2414334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ec409cff6fbe22056907de4c92ba845c64850a9277ce024ad90756e066f550. 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/QZ93L2060253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9566da32ef3cc15fe888d66c18cfcc8d300b8c41b87bbc568a4c6243336116cb. 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/QZ93L2111675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e19f9dcd0fbb34fa227df9471a479e64ab62182b8b1dc1a1b184a06b238ad. 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/QZ93L2104111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf318190ca9a9ed1efd07d65e8d30757937b887c2a219330d55e98c72464cd91f. 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/QZ93L2110939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603607d9d24dbcb7ebfc98cdd05fe3b877dc3743977042051f7ca7f701649708. 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/QZ93L2107486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261ebfc674a4aea9136501ca1061ff04b39793b725e1c8c531e10ccca65cbad6. 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/QZFZ62327350.