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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 0xeb91ccf780bd5d5d0708bb4464947e3d4ec1e8c96dd386f4e36f98cb16784927. 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/ddf2d580-0030-48f4-b496-1a7a19e692f6.json and https://artists.proofprofile.net/proofs/artist/ddf2d580-0030-48f4-b496-1a7a19e692f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xcb6e72759cdcf6ccbf6e07578dc437dfae35453ea2281d7b26111e78b93f57b0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLI368215650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9333fba8a9f67cea1b0a59604e44571dd02471b630560d5b180adfb08f325ac7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PLH791300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05a52d57502947eb43b137825266923edef8e66a243e26d47778b4f3d60c2bb. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/PLH791300902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9342793c2c8d4750a2990d2552123c3d0ed2fd5d11f8e719c5cc7493a8e60f. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:59:49Z), 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/PLH791400458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534f16f7c45f1654b243fdcfc43a23d722bffd6b8843800ee85d4c7d8c377e02. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:59Z), 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/PLH791700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07056a73f5a36def5a15af21ea0fca35978e4620754cd30bab24af3a8177c4e2. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/TCAEH1906451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7e4507a47915e1ce20fde06a06c463e81577c846b4c78115f81a285ce74c2a. 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/FR96X2003911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceec78de24983d4e637e9c8648446632299dd31f5871ed182298323363f34c3a. 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/FR59R2145102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c921e9c1b496f97f938861ea2ec9516096023e11c8514b9e764c046a9a48398. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX282120451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca115c726b6ccc17081f0e064a3a0f26de3743bb008d1bc14760b382a99f2b1b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FRX282198805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd462344f14c75cdde92ea2db10ba8daf3255b726951a64b4774ff6fa00ba83c8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452250841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b451ae4c498f9e9bfdf3f1addf121083d08367370e0c4bec527d455baa6e78. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA082239063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1f8fa53e06d76f3ac18e339913ad264f2552a448b9cd4a56da766c67e73f8f. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FRX762383400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036deed6d23ef9d08952a310c352851f1dba037108c86f8d5d6f1998f007b917. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/DGA0H2300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e6a13b33a5335df7b9579e5d53b89386465f605f2dd97223f7f06a6ee43ccd. 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/DGA0Q2341966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c63a490382e0154b85add11ca8d8ac051e39e791cdcbdc89629de36c3ff9b7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:06Z), 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/FR59R2474557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5115134e8ef423c32db92ae4e0a9af68b475bc7c2d244e9fc7fb20eb6a424b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/PLI362872550.