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 0xd9d80b265544dc137c2136533f3e3333536b30c2fc58ff586543c6507e288a6e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1da266e2-ceb5-416a-81cd-17a6385a5b5f.json and https://artists.proofprofile.net/proofs/artist/1da266e2-ceb5-416a-81cd-17a6385a5b5f.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 0x1dc58567cfe2678ddd44fab78afa0cefc207de8a8074461827118ed8be703847. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR96X2291038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53580b63749a87a32e7a419dbb230c70e12e73440260424823ab40f0e332061f. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:25:33Z), 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/FR96X2291039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31740fa79d829fedf71b237b8cab65b135e4bf027ca393b0db8d8719f2675a5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR96X2291042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7cc546b373d24b885e52cc61280eb818a96d87ebee0ac35c8b34721324881. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:42Z), 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/FRX452237384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de160b1aef66c59ebaf2f1391bd757d3b74e2d5c675e3f75a4843a912f1a784. 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/FRX452237386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f207ab8f43172fea96ca9d8386f1322e389345a7b52f23f56030ce88123ee55. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX452237387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6c26a4e2ec8fe8cb0623bbbe1743e7386d0459eabf71a6cae8b752d0442b2f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX452237388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6fa0a026d954029f6f160de449f3101ba2d9a8113073ddcfe4ee39b3f1468. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:47Z), 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/FRX452237389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051461ca790a3baddf661f56c2054557c24f6eda6d1b8a0ba0a794af9fd120ae. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRX452237390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aa0b7aea27d378e6ff83f771ae5594953350ec7b97c61a688bdbd190ffb7c5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX452237394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4048d446d93f93b5c2f4eef39ff27a582806b96805e34c03906d50b62aa44c. 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/FRX452237395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567696d0f9e68318a9cdec42868869d779039d2678f9076e1176e107e5d9bd38. 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/FRX452237396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9e3618a222656aab13bb1d9b97b6ba53289be5e2f874a00f4bad12c0c6362. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:24:31Z), 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/FRX452237399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc20605c38d4f5a5b7b7583563a4a73677c0b2d7d11fe505f6cfeeaa2eaab499. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX452237400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6499640d0c9dfc51fed2fe9072c838d59c4ff281dc77a41067873607484c6. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:18Z), 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/DGA052297343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73f2eb4d6d2b55474dcb8d7b7b1c91d91367bc6a7bebed0128799ffe858b5a. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/DGA052297344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233545673e35b70365b1aaea6c29067fecec9bb7cc54c371335d99f1d92b0ffe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA052297354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72bc91409d1f1b501c2bbf89816b9a812db7141b564d92dcd82a32b1f0cc6cc. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/DGA052297356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f97d340dfd7feb6114b7d84f01791b0c13b4d047df95320762dd692a563a1. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:23:52Z), 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/DGA052297364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1848bbecc0ef1ed3667b69de8b0e77e803a53298c407e0ca89ba9210ed4d002. 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/DGA052297366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ec36482a9dc9af287406bc7d047bdb7f06174addc5baea66e77aa5e2166e30. 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/DGA052297368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eea3b6ccb29d2a4e8f0b56c04cd03959404e5603c4a612247fff569e943d0d. 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/DGA052297372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc773c3fed8be5b094cbc055e6e9a2b02f9c52f30c4c07f5abe9d87da203ebc1. 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/DGA052297376.