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 0xf2bef22afdf433e5178d648a362d752bb420ba04e60b8ab9e60427d3dabf2f3d. 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/546089ba-7d12-49bc-b17a-b04206b267a7.json and https://artists.proofprofile.net/proofs/artist/546089ba-7d12-49bc-b17a-b04206b267a7.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 0x3afbea5e10997be0cc8e87d9a7696c92ed0f4ff071370bceaab3ebe4ea1c6be8. 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/ESA012223463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d44403e3c85beb85f4213e9e93500afe210383ca016a64917293c35b6dbfa32. 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/TCAHF2356904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593a0bc7e6a01147e1a0b34aeaabbd7066703386fd58b933c0e82f5b2132f2c. 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/TCAHU2415149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99679c5d944219fa7d3d1dcc0829ca54abd5ba423508caa93ec94952a320f4af. 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/TCAHY2476768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc162797f027356627237b3104cf18afceb8b4f46dc60e838cd1ff4fb9eeb4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:05Z), 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/TCAHX2417490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593a0bc7e6a01147e1a0b34aeaabbd7066703386fd58b933c0e82f5b2132f2c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAHU2415149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8077ae51f3d2ca6c1c865a34f92a8cf146fa1bc42bc67130fe5f582fd415e150. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:02Z), 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/TCAHP2368702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e41069e89752486b86eb9c8db0617836000035bfeab9f7913219caca3a4fb63. 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/TCAII2455031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c41b17c5ceaf756422436e40f17299670b1d74b602637774303dbc0bce8efd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIC2474128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58ee3799c823868beb305b21f57662dab6fe30552ddaef6877eab4d815c1ae6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIT2412007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0501f8b284bf315cdec2ff15553c01a16c9ada7696003431ba2472672e01eb05. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:17Z), 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/TCAIQ2461928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cf2da1996f68f6adffc56876ac82576ddb8bef28e0138c8276e37ad366ecf3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCAJA2475354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc65d32bf6600bf2d56cb96e9ad6000fdbcddea366e7051cc6bdc0e70fdd509. 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/TCAJA2475374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808c1291cc1cbf4f06c8e3f2957a90b881e68a9f8e8c4ce1cf20c4ce03f680c6. 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/TCAIZ2475407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be5cd1d856c3ea3db51802f963311328bc3756ab5a31ced3c4901d094b24545. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIZ2475413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80cdafcd3e3e6e7ed2b29ec48eb452c3de40639b93652cd7c1d47f5d69b721a. 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/TCAIV2480490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead30dbd50a4d4728154b7b19611673dbff33891c3ccc2c96fb211e39e780b08. 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/TCAJL2549181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6537e577c40178796495c0fad1942073679986006753503dd2a387a33ddaad38. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:28Z), 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/TCAJN2534830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f75a70337199b46b66af08b1706765e822516e0af0b5550598dda8a3fcd3e6. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJN2535023.