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 0xc6c2176e9568552d7c8d6045ec762e7d27c02d1e9a073d61f5e763ad9299d090. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0814419-cd51-43a4-a7d2-f3e6e7a346e5.json and https://artists.proofprofile.net/proofs/artist/f0814419-cd51-43a4-a7d2-f3e6e7a346e5.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 0x320620083ac07d26cd0805f033ffc8e30f6a621426e3ad5342c6f322907858ff. 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/USQY51380142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc98ed4e8a9e3f3461a47b271b5c5fa3b9ce9944e3d1e9998f02c3e15461861d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USQY51380146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0004435a648ddbb7e1212207bd9b0796be94d133cc175725be295eb68c516f. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:26:12Z), 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/USQY51380147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0525e83090345690f68cf7fa7134c89dcb0299fea87426079fa10e501858040. 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/USQY51380149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b374cee97a221c8221cb9f8f017b94e0d5e032b3c84e6e992d48bdb004c32. 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/USQY51380150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f789e8b4fbd2415a5d5945849b3e922259f39a6acaeb77c083b4c3d3228738. 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/USQY51528871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b52a23eaf29ee9827fdd245006edeca162871f9517caec2a97b79403e64148d. 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/USQY51528873.
Welcome to the World of TreeHouse! (Live from Virginia Beach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e6b17cfa7a819d3fc873cd53528a8b505f32f656e273759c336f827c9cd68. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:21:26Z), 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/QZB4J1859194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10792ff54dcfc71fb78a0b03b18f39653478db597525f742f6241c7a282f6b5e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6N1903472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826806b84c8881f95852c570c64de78c5e75475e3cc4ce1e4ed854e6b866b480. 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/UST8K1815363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ddf38031ddd09b7364da1ee675235707650bbee6cb7dfecf0a8055b562caf2. 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/QZK6N1903473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191d4250a9179d45381394f68c7dc222bbd8a7f59f5826fa4c956592e74d7f3f. 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/QZK6N1903474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb0948a6e8f27ab846005bb9fd62429cc1776ea570c1f55f2aae686441ac046. 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/QZK6P1951795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e39f13c670ab02df032de2fd63cba43a4db0175305cde9ec012b2d6ba58ae42. 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/QZK6N1903476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2658a5eb987c8d56168426c571f0a92149f23b4150411f5901aa6824e6909f4d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6N1903478.
TreeHouse! (Live at Sugarshack Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e3313bbd3af32be89bb1c4b411a67986f37290810ce49d13dc3046c40a944b. 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/QZDA62115848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2e0ce7e02411592f8cf831024d01e686652d0fb775f2ef1d3c44a5f925a1e. 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/QZ5FN2237592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c832d082faf8c9f7ab02c6ec8b5287f2f670f2b3f90fad007741df5aaf4c39. 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/QZK6K2250052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d5b15f16eca011d9aa1d0a2d166ada1ac48f10ff3d9c7b4c0a1b04b0e789b1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBA2243981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6564533a56fde98fba1142c420846b9994203ba7e69e30811988a2ab5f979afe. 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/QZDA82384654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3d918ee7da6ca48647debf75ea10bc0fb7f69c8c10ee97e67793b7d52149c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:52:20Z), 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/QZWFR2347399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acc8a8b901c2fea12d631dcb435c74759e90c79f5f15c10f0cef963a9a4920f. 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/QZWDD2490680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e271afc3337570a356d4c61f72cc6ca2e1e7c8d7fe604c9849527faab58933a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWDD2599788.