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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 0xf38a456b1ae1205574fe89ca5c49b5d42cb096b7e7c2e68fc0f482d6dad6a3a7. 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/40b8b051-cac1-4542-97c1-f8ec4cfc37a0.json and https://artists.proofprofile.net/proofs/artist/40b8b051-cac1-4542-97c1-f8ec4cfc37a0.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 0x1b9f48a0801d54d43d6c718395b7d1f82fc2b6d6ccd5e9237d7b2a6fc743f823. 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/JPKI00913545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4026bf731026250be0056ec6b9c16d8d0e0b193f0dec085f0989e7628d7db4f. 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/JPKI01116620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e714769ba29fa0680c912cafc176f199edc550e756a99742b993d8c9b7e567. 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/JPKI01211530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdafe8a60eb35bd819fa19704fad92a57dcdc1b977a85614dfa131c9e6bf5a6. 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/JPKI00911636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad591d3e3b47b8d4539faf645ffcae1dcb7111298fa5f7b83c649630a87be5a. 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/JPKI01117422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5be3d336bdc9f9343906d6b99dcf20d3f3abdf27154f51c6ba80616b8d470. 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/JPKI01110651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4e83546f3ed179114207305a8e48c164110ba91fd1dc196229d362d0881616. 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/JPKI01115754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e3c8151b405c44515ca270ebd7f7fa084ddce7939853158cf2ed46eb7b410. 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/JPKI01017810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05c2a87ddaf3682a6cf78408402d6375338b12d2dec5ee5d9bf0964388e9397. 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/JPKI01119749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669343ff0866d976555c28bffbca141fb5254e7aa64ad363971dfc0df84eeb2c. 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/JPKI00503983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3724499a76dd157f4d21aae6229df28e8937035c907800a39589dfbb3d2b61. 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/JPKI00508780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1e3da3b3d154a935040ee4fdbd337a466364b0ef189edc8802332841b3485d. 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/JPKI00818088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6f04c15254d56b705c329515c27ff8e4dd157b7ebc795f0fcafdc0d7ce8e6. 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/JPKI00707817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332560dbd9cbf71356e1cca9d1eddb90b56b4ab118f6f077724aa76b121d840b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPKI00609592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847690297a0d0141462155f78f63267beff2f75cb3355dd0811e8f2fafdf5b86. 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/JPKI00607171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669343ff0866d976555c28bffbca141fb5254e7aa64ad363971dfc0df84eeb2c. 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/JPKI00503983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3724499a76dd157f4d21aae6229df28e8937035c907800a39589dfbb3d2b61. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPKI00508780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1766342a9ddfe42a0c27ae1571f20622951204c83045bcd8b563697a094ca17. 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/JPKI00506090.