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 0xed642f8df3f78802c31de57b221e1904ec3281b489bccea559d770f4ea92b09a. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9f4c4a5-cd5b-46a8-b22e-ba76abd5c4d8.json and https://artists.proofprofile.net/proofs/artist/a9f4c4a5-cd5b-46a8-b22e-ba76abd5c4d8.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 0xffc93147702877629fb786635e5778470a6dcb9dc9ec194afc2d45b5b79c1e07. 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/DEZN82475856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1046f1083bb3ee4c82c9b3c58402c5641ba3d76c3dc8cc0bd7e52db49bd2e930. 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/DEZN82475842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a31ce917c86fe9f4c37cbccb4f4dd4ca6df66aefcc107036eef3a3b4bf2d3. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEZN82475854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd725cc5ac5f60a36745c2b965579ad6c8aabfb496f44d987905dd27030f6e3e3. 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/DEZN82475847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3bf1e8634d7b4da388ec8dd46a4c6eeffbea5dccb8e875a305070c0d018467. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82475859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebffd801d023f6ae412a765420c13667e9fb56dcfa31114719ddc3d0960c6c6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZN82475848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8630a335ab1e267ba5b0f990225cb05e0517cf1456fc8cbe5b9e80d479a9cda8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEZN82475860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cce821dd31763d3cc7a551f2e42850a66bbabba21954b7a5d8bd3e4cd5cc4b. 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/DEZN82475858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39258ef46eac9f90076a4c37a608afcbc893ecf2ab06ef99c131a9f27e4614f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEZN82475857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f394a0da6497c6fb6a3e542d7f614c8096cd53aaa18eb2d9d5ed76fb7998f04. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEZN82475850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1543ae2b45c5186a22d7955bcb922565291d293e31bff2d749f326e528b9f0a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T13:00:33Z), 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/DEZN82475841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbcde92b9af4af472924f9e77d5bc01e562e8072537b38e39c6e9232e1625d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEZN82475843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a9dc4fff4248e9976a6e8169bcdb589b6ae135c9dad82011f4477d9e08cc91. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEZN82475852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda20594ad306f38d685fac0c0c26565ac1f4d7279b06bed5ac2822b7235729ac. 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/DEZN82475849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8bfa990fc0658e48dfaaace08359122487c7ae7849fa56342f46601812adc5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:33Z), 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/DEZN82475845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9209ff5c8cc666f28327ce76016f50e36f6200158119a6afac51ccc0c520671. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEZN82475855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e5497c0d3637cedcb3bd4d743dc9226a682e033f9d6b48aade5a47ee28d218. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEZN82475844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479c9a3785937a23cce61f9d7558dff90b01b09199dcc571a1c4790b635f0b8f. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/DEZN82475851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb931f552b585c7dd57ed6111e1ae07096b58060f19b01e842972b7a9628697. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEZN82475846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d9f2a4396f17947afcf4a73c4ef864b977ddd84fe2953d4040c4595d57a9f5. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DEZN82475853.