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 0x3669db8fdf018bbe0d01d0aba3673e4a91637532b02ed6719b68a89488c74db3. 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/ccd12ec6-a125-4bc5-b25d-744ec3974daf.json and https://artists.proofprofile.net/proofs/artist/ccd12ec6-a125-4bc5-b25d-744ec3974daf.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 0xb99e50fe4bfc1e00df7575848bf939eb3d1e4ae163a50de3decd38b256c62852. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:06Z), 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/QZPXF2120880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c36b9ba62647e626a125e48a2d1297df1686b3496f2b74c2a3b17a6811143b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:19Z), 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/QZN882223883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ddc80958bd2fee7499cbde5fe1cdaf3cc52bfb5c6ce52577eba8ec43afe0b8. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:53:09Z), 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/QZN882243179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2256adce046420cd48bb26e71d20b8a3d43bebd62848b2849b360d58b5bd19f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:27:54Z), 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/QZWDW2228982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a84fe8a3a65535ffb3b605cf1a7c9cf9418c357755eb0829dd4a54dfe627ea. 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/QZWDW2308104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaae14a4dfa57518d0fcd935b590df30e061cfc184a4b586e5980a477939fe95. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZWDW2379491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dfe45ed9492b1c483ead407b755ca73782284aca1dd46edc74729faf999903. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWDW2379497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf199e31e053aa17bb8be6c429b42d22a9dfe407abb40d95e1f7aae861e737d6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZWDW2379500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95344c8844560a7d6137498712a95d2c2309e6ff9a81f5943be3bbecb9d19f2b. 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/QZWDW2379501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e73217fee9dac1a1b9e3084c421a1188db0660abb1e3bf990a63c4d2f04e8e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZWDW2379503.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8f1a0b9587579e1be919e16178b080f0f1c3b5e4a5f8550e5aee78407ce738. 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/QZYFZ2412176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6c40cde309a3661d95d5cb4e5be2b9fb50bbf5a5aec9fe37f912ba73aa600. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA82574824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fadfdf045deee3670ce13447762ce01706925f207140253add8becbf91cf0ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2408769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a0a7efb2d19aee0d6b48e9f5393bf32288cfef38fceaa60392a062132f703. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN62313370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270c91f3847ab5156b8ca600cbf49f8709fbcfb02776a47e3890df72566a4441. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2408774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270c91f3847ab5156b8ca600cbf49f8709fbcfb02776a47e3890df72566a4441. 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/GBMJG2408774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fadfdf045deee3670ce13447762ce01706925f207140253add8becbf91cf0ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBMJG2408769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a0a7efb2d19aee0d6b48e9f5393bf32288cfef38fceaa60392a062132f703. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN62313370.