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 0x974d5394d17df4de43ae18fad6ab6fbffd9ef1184c4e9a2f7b713106cbef7908. 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/bf17e1ef-78bb-432d-9a63-93a006afc109.json and https://artists.proofprofile.net/proofs/artist/bf17e1ef-78bb-432d-9a63-93a006afc109.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 0x30f93bd4189576d9654117fc14cb4a943967a74a9db9dadc2829058cab0f6d7b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN32360450.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25000c1c14f4bd05c49acc2b735ffca6c8c9b75a2f0734ae47e3d5ea1fad358. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHNB2338674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edd49a9a5911795dae40c804a875914e72741372bee91b386d24e6e0b305c33. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:02:37Z), 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/QZES92386103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0c037b4c116a0a3080f21540d9e95ca3c231fd12467bc6f0e030fb4fa949b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN52391308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d6797d40638139aa439c766e92fad825c5262769f493a1a4b47f35ca8f0130. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX53U2340418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c6cdc2650f6e3900040475131a6eeeccd6b05535ca2f62afb0a40defd4605d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:48Z), 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/QZHN32360407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865cef96e82eb17fb6562beed078badf50796f8a412605dad5b0caa79539ce5b. 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/QZHN52391289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e5d49756f1e4d55306a3748132cd8636f95cd531d09074da7ba25bb7762080. 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/GX53U2340298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa591c9aff60b0d6286d29be7189241d2960c50eaf6e39aefc56ad5ba8059e51d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZK6F2362802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa367935947d89f74c977675428aaf41ead16476d0507545746b0ffa4337bcd71. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GX53U2340401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c555d8f739362277f225366d7685a32ad50eab1b4e34c1c00fe065bcb21ffb4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:45:48Z), 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/GX53U2340403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b63412e6f903797213d604bc922c2820bd2c1d8ee08d41c9cb4d67165f4b914. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GX53U2340550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b798166854f259aba815a9f36fa5c868a93f03679ce713645d92db71f983117. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:32:39Z), 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/QZRP42393684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb941e2acd431af4fde4d28859795802410a26a7598268b7063298bb603d1a661. 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/GX53U2340551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4be67c887c3c57c362c6053c80c6c67b94cfb97f931826d56ffd09cfdeffce. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX53U2340552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b47f8b9e2475f09b3fbacbbd334c34baf1553b85b489a1ae53857d142235340. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:39:42Z), 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/GX53U2340411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba51e6e0f1e483a37a0b256215713b08fae412d1f388b7d8e1ee654d25236f. 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/QZHN32360437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99959e34e260ba36b47032abd71b492072c685708bb6be92633e70613937a481. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN32356938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f31954cece47e5bf2a211acb151bf045417fbe83a49a58fa4b0d54d18417c13. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:22:32Z), 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/GX53U2337626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc178421713efc20be49b5d99b4f3e6899dfe7a0085e6c2d538de7fda8e0f5598. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX53U2337627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd63bba2fc0a8a891b401422e182722483328bde5b6a9c1ab9c912837614781. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GX53U2351912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be099b8e9234ca17e65e4846974b5486a87db9cabfb891c7f7ebde70919ec5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTB22311571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a08769cfffbbf401bad24bde8892c85b8df73321ec4892f250226aceeb6b102. 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/GBLFP2509581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617dcf4a58b57ce8c6daa7868d03296ef53bb450963c162627ac0d95f62142fe. 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/GBLFP2563572.