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 0x15842fcfceab2fba16401a7d0b7936d927241939f9c0b4713b9d7b1e5f84a737. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/614a331a-e9e9-4f2c-aae1-38a420c19135.json and https://artists.proofprofile.net/proofs/artist/614a331a-e9e9-4f2c-aae1-38a420c19135.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 0x3530939dd09bc91a554b45c6247aa73a1864c7bdd5b63b6bed415da831d70b27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES562310841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a724df85cb12becebe03659607c8ae4f029e11fcaffda80f46f4fb93e6beb9. 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/DES562310842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2569f5a217cbad36574849e9e2dba162cf0e97e2b35ba6abd989416349d12e08. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES562310844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef79624a632f45df11536705f803e00ca9a66af502404644062e0416e7e1f53a. 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/DES562310850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7728d455e88aff5be8e8f2457b84082857aa5e71df2e6a09ab3d9298c4a6f493. 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/DES562310852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8452d7e1f4ac1c214bb5f20de7e1a8f0a4c62169ed9271f4c0ec78e9f2e5c0ef. 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/DES562210030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3199acef92eea0076eda10e35eeba3e5e4153f06fa601d9af0f5dc6298002e8f. 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/DES562210033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d96a80019a3d23c454402e1b5c05b8f378115973e187073709239a2bbdb53b. 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/DES562210039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f80c8311e5583cba7411119644baeff112ae05b3b905634481bf993116aa9f. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DES562210031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75747bda1b23402861db827a6f7c1f372cb5e8f29b0aa6d97089df934b034920. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6MZ1818183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb44a8c6eabf9fd47e4e5102556692d8ba1bad8c3d18ffd711451bc98e0efd8. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QM6MZ1818184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5e7e785ed2f6e834933ec339613bf651bd9b3ba30eab87e0b1676af786beec. 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/QM6MZ1818188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b62c43c0e780f58d9690a8cffe8a8991d5927a0a46ada5d6a6a74361d5b20. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6MZ1818189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9dbb3fe47a79592f2c41a08835e8a200920a7902e94a9413cb6a05480f1a22. 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/QM6MZ1818191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4ee40d3090f015f9a819b37f704ae82e93fb8b22c61a97406a074f67b21142. 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/QM6MZ1818193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540c3d193d3c9d12aead23166e8bbb48403435a15744b76ae09a1e8df5232c8b. 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/QM6MZ1818194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642d7e4913b7612c195e1b08bf0a72ed1332f3c9882808d29d01aeca20c43fa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6MZ1818196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ff61e1625813a5ceadc1256f6ac52392cbecf0f66f23664565fc3fafe664e0. 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/QM6MZ1818197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcb5f69af02bc9ad14e2155d962fbca5b95b47d32caebc15d6507ea06140d6b. 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/QM6MZ1818201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15caf509954de7bd0640faecf2b587376100fb8ceeb9088250299bef75efe921. 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/QM6MZ1818202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11916a313c6e6124d9ea607b25b7293e81b0397a93d7505aa0b3d45b1de1ccc7. 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/QM6MZ1818203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd261f12adcd46d20946ad7430058c2c6d17b06cb5d32a072a15958a6e40b1791. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM6MZ1818207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e536e8605177d9e4aeb8e9144e00f910c218350cff13d9bedd967e857a03a4. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM6MZ1818206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f11e520d507888554a6558d4332fd51d6175fa80a661d98e54f62bd041c65e. 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/USY252411619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaf90539ca6d6b9d9db090ebb1873f80cbf57f8918b1add6a461726092e9c9e. 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/USY252411620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec091b89c6566b826358ef5cdf927ca417fabeefe869a460d5463896355fd851. 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/USY252411625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0029da442e7cf422e62bae46210ec3cf6c159a8c46d1f2f437c0135860a5668. 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/USY252411626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf0060726dc54136d9da25905a954a1af214d8e26c9ff1e15718048acc0e4e9. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USY252411621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bda08d81059d875b1c33592cd95bea3f7effa7420b76f5a081c1f2cce8399ad. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USY252411622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d046865fb76b81706785d0550db7f4034eba2343b6ef0a764b76c54ac6e74. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USY252411623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e6133c128e3b7488a048fe8204f6f3906679a4bc8cd6a568287698dd4b6c0. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/USY252411624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43995c91a387352e9be1b49e776fb2dd808db99a8ee69f224a44a372bfb0dd4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USY252411627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7247231574e800c06defcefeb91f33ebcb70ace13b5922bce10aec20c2c39a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USY252208791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14fce52c5c14269418b962e9228bab0b5275584bf1d4c17fcf1b5bed7bb3b56. 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/USY252208794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef574f94f3ad1135219cacbfa8f00e33a616445177bbe91129182ca51603b820. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USY252208793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aa4916110bebcc309b8bef142e27f887419a452dbc19636dcc82fb086082bf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USY252208795.