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 0x5bf657f46abf9602eabf1f0650e89f32514e4b182238f54d860c85f9c63e5007. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bc39a92-ca44-4760-920c-4ad7e0437ae5.json and https://artists.proofprofile.net/proofs/artist/2bc39a92-ca44-4760-920c-4ad7e0437ae5.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 0x0fc7fa2ce13e072503fdc7b90b35d3d83591e5ce9c53ea4f407ab58c72a5401d. 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/IL6192400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38d4e9cf4fcbb114708442f7ca4c212588e68d53e4acb4c8a46da3145f79003. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IL6192400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3435eef880afff7d771b2cdedd11b8128d7e16a19faed6ddf8f183fa7a8c9b91. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:11Z), 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/IL6192400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860b0792a53a103c8033a3de18678bcadbcc347ba348a5eeb7fd984252a57f6. 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/IL6192400973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f88312e5afc1b527538254b3db28b6c7e297026e4861d0fc9cd6e65cae46e67. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:43Z), 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/IL6192400974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8db8c1706f3994fd0f4da149b3a79fc1ced8abcd673246c2fe7592f76178fc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL6192400975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11db58eba8f3a93024f4d0134fa4d9c96a4fdc55f58065165645348b7300dba8. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/IL6192400979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb412591b708fb811045e15445383f496bac741ef43060d1dd58477b32e2f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IL6192400980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9de36a5d787454abc8f22b6a8363b684c0d482d1ff907dfbdce8fa29c7d14c8. 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/IL6192400814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693c83f1b65ddbd49d056ee93a4ea085131222574a1044ff1bef012d8ff066d3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL6192400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d99721b8ba857870b2ce95e18ef2e849d33de4d67b94b5111838c40bdea03. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/IL6192400816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f5d11296864ff169882518504add7315fc463780740c465fb2ee9305e9296. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL6192400817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bb0afc3b589dad49b6806ac395b5ff7186bbd324d819c3b9d460d614918676. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/IL6192400818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2264a82235b3d8872dcba21bad7ec38d7f11cc0acec02379b5612e5b562945. 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/IL6192400819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8106fcb904bf621e4e1edb672435db6391293e049fc9a23ce68752140a5ea08. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IL6192400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca73d75124a3fdf98b5d3fec2f82be08753a695da7ccbd8552ba23b4c79bc69d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IL6192400821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c06325737b31ad42a5986f5327bd23610860a125d47d13b045c5b2ee6281c5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/IL6192400822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b49afe7ffb7d665886656b6e9a06e9cf7892e6b84bffe4cb447e26519e4cf9a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL6192400823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7723304ac58b4f265258cce38da61a68652dddf32cfaeb71efe07c7310722524. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IL6192400824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5ef708579eb39c88d5bb9d8de4171635513670b7b4cebc1c0f4c012af3337b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL6192400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd809eb74384dd9e978dd93917cbab446aca3de25b1f3b6a17da41c2ca68f8c7c. 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/IL6192400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff142feea80fa30d63e13d9d91890e0f6debfbfda158a8f30fb84af9d7cecfd. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:09Z), 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/IL6192400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0873dba98db31be27f4a220059305f4bf47f1329b02fd0c1698633f253038c43. 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/IL6192400830.