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 0xc56e34524a2f14ebcd67f3256e0a4b77499d4d5d3654124d1129101ea7339a6a. 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/ec86485d-abc2-4a23-85e6-9cc2b86874fc.json and https://artists.proofprofile.net/proofs/artist/ec86485d-abc2-4a23-85e6-9cc2b86874fc.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 0x19e2570a5ab943cec660f4f97d43174532f2d41263adb6ecc44fbaa5bcddaceb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2315486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2c7d0cba10470b694e3682ca2b8a11027a59c2a42e4fc9dba5952529fff7f2. 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/GBLFP2216542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1eea890bab889bccc857590024518b84f249e4361c6e98098fb9a98b0dda4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2141559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c26ffaf17b558a1a1ec99bb33750bd8ee637241301c68377747544e7f97504. 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/USA2P2139631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6324c7306e9da7dc884bc7bd58ef39d1586105af772755bd2c532586690e8579. 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/USA2P2122482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df4a3a7899ff8d54cc6f154fcdb16f8f2bf969f820987db4103035d255975da. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2141560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc007eef92c3bb8ccf07e918fa498512f98476dd72cf851df87ea2f0277992aab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2141553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d7f04b44bf58a0d67e7f35dbfb5ab24e884025b1172651811f69a7997040e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2141558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a76e1d4493ccf9ab25a4c6784542ba5a696ae4de526bdf5eec113469c43a161. 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/USA2P2141554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc344f9186f6100b01d687de8c0187244eebb8c913d0df947ddfb458cab152. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2104699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a616fc2d6887951d1df1f75be433eb577fa499e99896205a82c4d419951472e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2141556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c26ffaf17b558a1a1ec99bb33750bd8ee637241301c68377747544e7f97504. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:42:15Z), 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/USA2P2139631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6324c7306e9da7dc884bc7bd58ef39d1586105af772755bd2c532586690e8579. 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/USA2P2122482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc344f9186f6100b01d687de8c0187244eebb8c913d0df947ddfb458cab152. 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/USA2P2104699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc170f1b8dafe9c164256a027c2eb107c5e8e0e03ec815427fec7bffe03b167. 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/FRS182052925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ded01c205af2012309d29b36dcb34ee762f8a5c0dab0ebc73a6dad26335144. 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/UYB282490182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c899ca7110e14b8e7add254c4057a889a1f7358f8ea5da8dfff87c77687747d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:11:43Z), 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/FRX872235574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6924dc1a4f7bf21a000f1cddbc8eab5cee366088f661154b90e79d003c0764. 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/FRX872235655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ea3f11a2a71d55cc651ebebe099bf020c10914e5c28e8247e737a59ab91fed. 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/FR96X2268119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd22dcadb929dded6fdc30ed1bb2426105245a593da7c2f867bbc53e37b482c1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHZ52259573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f02d97ea9323c6933b93cb94ed34806e41280268a3f1425ce55d2ad646c172e. 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/FR59R2222938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe63c3b13cea645e7a7217cdfb1483dc854982fcbcea01533f9da8516a4abc4f. 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/QZGLS2275575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f30839884e0064f3ddef1a1b0ed46c54dfd416d3234dccbeaf364cae8345b8f. 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/FR10S2273309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d2a203daa4f3357358eb50c74317bf1a77b2b1b91ffb0e5cc8102498467e9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5152200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369781edbfb8bc7562e9c6670ce2569d1b6499a2d2d106562616e02771c43a70. 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/FR10S2218599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08cea785533c601becca8009d7843f4082de2e80b95cf2861f75c170e5f2996. 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/FRX762147619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997c5d624fe012c794648e1cf9272ad57595c904467ccee67da72aef59d96d1. 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/SE6XY2110654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d7f649f7d00f759ffdd94340bd80c3bf0f9172a6f438a2c08edae3847efbed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA072166205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66898644de55d4a9f6748ceccf78c52bd39556c8eb69b06bb5ec24b38abef27a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA072166186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d5e68f139618100a5f800c825fbd0c523d77c0e80eb0d1ec7f80687e0dd491. 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/DGA062039019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6a2c54dad0e243a8362ef2728bcf7427653a8671f592e8fd1e71429657fd4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR10S2147993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e1160c962789b390449e7b2eef1dc8360b1691ca60bd7f2c4168352e60d95d. 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/FRS182081278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bdafbd29989d8a348bdae8ac9da3bb370e2839b927c9f0df78194048447bf8. 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/FRS182082038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2975de05a5e396715adb698fe7ccb679d9bda9eb3fe9cbcaabb9ca0a66a809c3. 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/GBLFP2046101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf185a8afcfb4a8449d6ff36f6a3cec2b285efedc32e83a280cd2fbc4c9029f8c. 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/UKXN22099558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997c5d624fe012c794648e1cf9272ad57595c904467ccee67da72aef59d96d1. 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/SE6XY2110654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e894bf07b0394b06fe321948dd8889eb807619be535dc300c777b779b86638. 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/FR2X41900583.