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 0x843ee9799cd32710a7c023f882bf0cbcb093e3e0a8828ae54b3b28c66b671e42. 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/13bb31ee-b6b8-470f-a287-1ac45e58f80a.json and https://artists.proofprofile.net/proofs/artist/13bb31ee-b6b8-470f-a287-1ac45e58f80a.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 0xd4081ca2c4e6ef89c7512bd9aeb431b800f28f233f05be4770aabde8b1df7a67. 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/QM4DW1525173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb9fbd74dd355a35f51afc3589ba683697b31e68c5d40d4f0d4a98e683c4b67. 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/QMPKX1460778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9636df171532a05917e529affb7b884384370b7caffb840d2722c2505c03e197. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMPKX1460529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf1191112bed7bbf8d8b7fba4eb0ab3467f20affb6ad543e5aa7a17e77b233. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX201650978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a874b0ec421754ed63f7cfff3268ccbd222dccacece5a17e38b3b0b18ada9b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:11Z), 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/FRX201650980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d29e7348ce6182ff8d4fec1c95a5940a0ac60ae23e50d1c8d23cf81425ae6a2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201650982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d80bf0c4a3af9f2510e60a687a6f48e9b217ac5d1faee0842ae047415acbd5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX201650983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fe793549916040ce86e2f9facd372f10fef366d6cc85ab7103df3c42e55cc7. 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/FRX201650977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf1191112bed7bbf8d8b7fba4eb0ab3467f20affb6ad543e5aa7a17e77b233. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX201650978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f11778fc18f78d599fbdbea30e62000c9c832b0f0e0624bff844c4e5b23eaf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TX1878456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd717c6b983c4a2ca73ae87920e53925ed11cc9fa81c3033ce6cea71204f6c799. 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/QM4TX1878458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805da730cd4a634ee228462fbb0151fe1735b0cbe4b4937b46964d63a5138e88. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ9EW2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed7bd50a5f4fd521d28db04ff1c093e395f6d89667aba32d32a5763891a0db8. 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/QZ9EW2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb078a276bdc066f0c69087e7597759abdccea1e521b5080c517a9b1034b984. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZ9EW2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ab47dea3efd212585bfa2cda50b29aec1ea107e93665c0d464ac1f83260a92. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ9EW2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27588a33fc6cd60224ffa73e8d9ae97e6dc73de6dbf6e4c477a89a6b857622d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ9EW2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4636023fe88e2e1b3d47d535d156580bf478e03238566518f970f0b464b4ba7c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ9EW2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3013c33b9ee36e61725dbd53f4da198fca371b51d1ee06d59ef1d14dbd78d2b. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZ9EW2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602365aae6ac1aa3ff76dcc7abb8e4f150bbdbb43475fc888cec7e4c26160362. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ9EW2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc70347530501a217baf2eb299f138d427185a324685048c9b024b770910845e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:43Z), 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/QZ9EW2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b19deba169748f5342f3a631c30cbfa825bd442af7d131d30eec48932e614a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZ9EW2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992d4595e418dcc2c6e8f224bd366833f928fec8adb67b41dc5522a69f67f55e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:18Z), 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/QZ9EW2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da91df4bcc8c7c4bb07cace78369558bf50b46071baf4b2bf017e4d666f602a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZ9EW2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c44109e21000e8dea4cd9d932756b9ccdee9a028336792a7650751131c3c8d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZ9EW2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926c206f6e5f501fd08727d00c287a2c52010ed9325bb5ceaa93d9a827514c73. 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/QMDA72435657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bca999e3e6a7977fd57162c541b556fa706264797194694612734f4ab6f751. 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/QMDA72435658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf7f7d715c42149615835bb96687bf66cefd61ea59c30f774235aeee5af58ba. 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/QMDA72435656.
Hardcore Will Never Die, and Neither WIll You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706cd1d2589a81323ce25e628e0f3992bfb34cc259e56b9b8d9b00dc75e33974. 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/QZWDE2314107.