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 0x7445c0026285a8e34b2629f8585046b3316704be6aad2bcd57222c6d6036245d. 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/6a3bb90f-f73d-4559-8a62-341a0ea8365e.json and https://artists.proofprofile.net/proofs/artist/6a3bb90f-f73d-4559-8a62-341a0ea8365e.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 0x24490b0b180d9e0d4a06b9d7057ad0b0287296ff151d184f90a9281cc3992c12. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CLOB20700454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb317a09253e01fed3f6f5ee21f8937b556e006551a6ae4091cca39b96d6acbfe. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:29Z), 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/CLOB20700455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8ab7a920fde0fa026876d68f684165041c6f606132ed6953e7558103a0fb11. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/CLOB20700457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee08ab3a2fd855d8fbdcbbe03a89dc5f45b7b04a64613c2a85fd0afa1533d01. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CLOB20700458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7dfac38c7d12403284a289ec4146e9a1747333ad04635f72c8b24f5e751d1. 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/CLOB20700461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea043e9881c64df7da9080d7ec0f646a3f03056f4ba9535e8316603f465340e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CLOB20700462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bde9595337098fdad4773d92886c8b1e1812b07fd913986dd660ab37ecf306b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:32:00Z), 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/CLOB20700449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463cb7bb9468a5bbc99403f2a58013265d667ac06bd7c9a6e5144bc58106eabb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA052035915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba74c896b20c3b929e2056197023c4947aeabf29dae02319f406675c38b628d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CLOB20700451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd346f0a3411cbc6f9a5ae43ec453c876aa7df5e338733c5e34b9c9d7e898821c. 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/CLOB20700452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79810c12fdb49f3210bbf861eeec57143538dde2b7e1fba985a6e5e16a2402d9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X2104552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc859458051dbb5216ce29a7520503fa766ffefb966932e3bd3234addcc8520. 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/FRX282165719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6f1e22b168b0392e704ac7eac94a90c6f9dc9f8bbbad16ed2754701ff34a37. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX452180256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188967e0b36a5d29ebd3dec8aa3eb0e1e181f447e6b516b5949d9fd77baca7a2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:42:58Z), 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/FR59R2115756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c811670c63f92a30d5955d23ac0ffd7507b1ae7a9b0d096753c8feef4b8a09. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX872143840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc5ea33e77af952f0db1e3f320f45936b1f761ab14f7d0ce86f3ec004a4b3f1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR59R2111734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0eb8209e8cd593bbce54901415cbfd2d225d3efa3b1ac4093dbc23326331cc. 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/FR59R2115747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea9bb8fd6b0d45d4687650210e49377adae1c6a7199f792f9f032a17b0faeac. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX872143842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775766de4181b641b4031189ec4873baf1ce145e743fe76eff40f5dc2f07d7f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:47Z), 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/FRX202275772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4491db23f7f1835e31f2d3c0178045fb62bbcce63bdf01dd3685ab035688e4. 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/FRX762041750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d26d8f07cf5b627d7aefe0796d82d04b0bda98be98d81b330b121186e7f578. 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/BK4DA2425200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd9b24b0df1c8306579601bd7ba99e1221bca795685e7f858095e1745d2088f. 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/FRX202038502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd9b24b0df1c8306579601bd7ba99e1221bca795685e7f858095e1745d2088f. 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/FRX202038502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8e7b8277c1e0450f742c4fbe336b034b334f74fe0632db4e1cc5384ba427d. 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/MXC851600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8e7b8277c1e0450f742c4fbe336b034b334f74fe0632db4e1cc5384ba427d. 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/MXC851600056.