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 0x580cc787d1f1fbcb76daf9ec51841f6145103091133695ac4f1875b2d4706055. 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/ea4f6dbd-609f-4c22-817f-9a82d3760838.json and https://artists.proofprofile.net/proofs/artist/ea4f6dbd-609f-4c22-817f-9a82d3760838.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 0x0f2dc82faf3aa6a2c5c9aa913fe7601ef6a015e4c59c5373140b598155733a14. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P41719596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29637d9f774f3bd749456d460b1dd4b98df2bf5c7e0abcb0fee71c7ff7112426. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZMEQ2023607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157c945e0e51a7c2ad1ee75c8766b9d1546446d0fc95cd9c78183fa3ffe76ae5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNC2212108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58681377c81ed457923d61845af7e9703b6ee8c9699a0937ee876d4c304eaa0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNC2341329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0aee559cf8b345de49c0b67eaf1083930bbeb380c4f24a1b2715938988e379. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHNC2341338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7af67f133001ca9f954467d84fc9fcdd40ed9a6f75f6c9b75a24ef74cd03e0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN62424002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09fdd3c2a5f542c0ce45c7683e19294aa6b7c0c9d415455eca1eca671bb2264. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHNC2487934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90afb54000be8adcbc50bde7bb848feaf615cc10473e9dd673e138d7c38dd5fc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:29:06Z), 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/QZWFL2436022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a85253885434cec6a04697d3634381c984991fc79f661b02db8a9f1d09601. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFL2436023.
Do You Ask Yourself If You Are Breathing?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2a1d7a38c1871141a1e1da8c90eea94ace87e35323c87a022536c1e6489c5. 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/QT3EZ2488965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a00b93dde71740c1146f02cbff7192e8eab59285d523b529d980d12a4218cb. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/QZFZ32595464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd595f4bde98d062300e4c0cf7d825cbe0415b87a34b4f385fed77bd69abf9ae4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ32595466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbc945a1459f32a83b0842ea0d50c7fd6898d1a11595c09c680621f72ba6220. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ32595467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc1afe2c6d661f8ce4bca1b4ec21e098d671f9a3d891736fdfe2c074b5028f. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/QZFZ32595469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79b53b1fba4a644ad643905c73304ef2abe6fb08f61b607e3881a05318be33. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZFYZ2575637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2a1d7a38c1871141a1e1da8c90eea94ace87e35323c87a022536c1e6489c5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3EZ2488965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cc27435f5adb38fffa2bfc47a3c440412b00e9b1cf51fd7486eec5ec368578. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZFZ32595470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb855ea71be05baa60f3ce4964d28c59c0f080ac5e8e9df3ea6d34ca80e085cd4. 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/FR9Z62100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b3e8311f6fedf10d22ec7b5e438c55d78bb69b7a9406cf1d6e3ddf176debd2. 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/FR9Z61900067.
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 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 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.