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 0x6c3d6c3b0340133f043a7027fe3dd39b92849dcd134e8e9089b8cefe6ec6dfb1. 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/442592ed-4add-40f8-bc91-70ee71daa3bf.json and https://artists.proofprofile.net/proofs/artist/442592ed-4add-40f8-bc91-70ee71daa3bf.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 0x08eb4c0fcb39238fd9bba97426f8f7f44ca0db4aee595aab01690727c9784f93. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFZ22522265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414a0ce9c9fe4dc89171d2b9e9687dc646344202e074ce9b2c984fad4a69e8ef. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZFZ22522220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c40bf448945c6833345aec4c89d81b74f4270ea5d5b0f9df60cc5624c6473dc. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZFZ22522222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f1e7d4c19fa9304a45f5fca06f86220481f364ba08f07121ce963f69d118f0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ22522237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704f06dfa8de27d6ebd08de4ca9edb3dadee3ed75a52deed7667e13c40d6558d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZFZ32503748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469e0be91de7aa3abec6ae2da444d5d5b9cb8903c94ddd06c555af70778c9a8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZFZ32503744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311b7156d5115bb6158807792ac11a3529eb951321d16aff106628f69a60a48c. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZFZ32502100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8ccdae3fc365c06daacd11594b948be520fe9dcc66636056adb7f9652add8f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ32502125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf2fef40ab5d3b882c8b0a666bbf613ca63b83b9ed1826f6d24bdc99092ce2e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZFZ32508347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c08abb057c31505a1d0623162e1e11d8487b638000f92ce37a9ea6587653c7. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZFZ32509564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915d813c1ec46ae532c00f874d8f20da06d8d82755b2a9d185d16e104ea95f8b. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZFZ32509569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6125eaaa518172b902b6f07540a63991ce284b132f20cb0dd00940843be28e6a. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZFZ32539395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc5786ced12e42a4e3d9ab2250e190131380b9cf0c6ee5c007387cd367db9b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ32539414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcc1c9e10a53aa7d254076afcbda49ce0934b5830f1bfa43d1c0797ae8726ac. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFZ32539407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba15a96ba1a9db49ed2bc41d419e40fc6094653bf0bb41f7416028a35e4cd2d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:38Z), 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/QZFZ32537502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea540c489923d08b5396f00e3b7e7a4056d7a63a87c9f8ba9aff88279c788e. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZFZ32509562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031cf9595f76e494765775b69741427cdd35fd55aa41e740e9a8a8cce917471c. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZFZ42505341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d927cc49a6382590462ddaa99fe445e920dfb87fa1535171736317b63facbad. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:52Z), 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/QZFZ42505342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14fdca830095162322030a47696b98459f9ce6ce986e68eb8f48e208d907c45. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZFZ42503703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3d66252d815431180dfa1cbbc65ecf64a3d144cc3f2f7fdb17fe24e20ea0db. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZFZ42505354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1123b82d098314273f642f0723f75f49f0e149ccf6cfa52437a3942b64879a82. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZFZ42505357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cebdcfa995dce0d77a96f7be9a73b97583f8740c9dae364bad28af7bcfa6b20. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZMEQ2586414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6dbd3940a70480bdcadd9f1ce2cc8149adf81f223f6ceea96b10ebc712afa2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMER2515851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb827782edce8ee7f80c8284c79ca2e2f0c0084cf1a22afdb5362a87bbee8df09. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMEQ2586445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8638b201f14c0711cda8321ea0626ad96d9a1ccef4ae620b176ecb0d0a5724ab. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZMEQ2587240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d53d368ddeb3b1c51ce4c7c92e38855c5874bc469cbf4cc185283f5daebf86. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:26Z), 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/QZMER2517871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdf08a02850087e06577a74ce86d20f429066d2ee195928041ef135f3dabb0e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZMER2517869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121977d62bec33d17b4a1789957c16499fb938b3630b49c6deffe6dbd0ca4ce9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:32Z), 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/QZMEQ2587241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeab04f334f22a2a644dbbe6912117c49b34971ee569670180b6d563634a1e20. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMER2517868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc2810984c563e74a9792fbc0fc226368f2aa9d2958270e209e3c2738226bd. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZMER2517874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab80d49aa30bba8c58fce476716397ac758469e3ddd703cb07d01d29201953f. 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/QZNWQ2525907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273f3040ae6e0ca22cda1baacd1322a21d5711ad6ba4c9560b5f2ee3eba6a05f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:48Z), 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/QZNWQ2502142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d96e0c941e3b6aebf6f7e442bf6a96c2cf3b3bb74d7f74f81d237af8077673. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:05Z), 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/QZNWQ2525896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6b0fb01e14517e7b0f37cac7337af4448217a84b30268909ce400898b639ed. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2503305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ed21828cedcbe202601f1a15186d056debc849e43cfa9bf33478666db00ccc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWQ2503298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb38fde45dbe2dd6dab6813d9560b4e696855aed199cb501040e09f924fc2f2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:54:09Z), 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/QZNWQ2525899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ecca612b39947371f318e9fd2c4a6e3653df3d1c6229b97dc686d7f93639b2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWQ2523778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac061d588a45bb459e24adb2276767245cc2302308737bc8902cf6ca7de346f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNWQ2503291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad32bebb875ae672e28fbcdef14a4b72e63c8860c19ff2e99adc3efd7d2aac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWR2505280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa1c19a1ac166c86822285889c2126c8e8fd0f2c43806e7ab68ab2d97921f60. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWR2503717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd134c008ad4bef390e7c72c2eceb60b9e544cf0ccef8ea2fbe03f282b363da15. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNWR2505279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff111bbb67f52e8277f8d8c03edd1e8c0e51352faf36ce6773e1f24b3274567. 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/QZNWR2503653.