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 0xa4cc1f8d59a740a76b88a427935e9013fd90212959359b23465bf9efeacbf2b4. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9826d9d2-1dcc-4a96-95fc-701633c02aa2.json and https://artists.proofprofile.net/proofs/artist/9826d9d2-1dcc-4a96-95fc-701633c02aa2.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 0xaab65a94a1d51a09e26b8b0cc9148fac292c8d9da3f7005cf905578e332a9abc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATFR02101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e63b91b517d739b588e2e96067f9e23ea4463e033917ea06a3ed3a6a99573ef. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ATFR02101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eeeba7afb45cafc26f30e69da5b60d63069d208d9b4d590f125ba3344778a2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/ATFR02101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4364114eae76668097d21815d189ad206450861ee9f32c23a06f723b07c6a8cc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ATFR02101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e5f748100d3f5565ba93d939731bfe4816fc2792002b0397f31543d84c3ce5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ATFR02101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69285e0eb049accf100bf6ef8cadb0b631ee17ec9fc657cc9345f98dbd11e677. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:09:32Z), 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/ATFR02101006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a86e318e9ac80606f0f8b5e9798d61d8a25f8db78ca1c2e8b6fb703793c8e. 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/ATFR02101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cce1fe72ab27580a889e2cb11b6634b4326607831032ca5622c48d6295e84e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ATFR02101009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82671ecaeb784118fc3be3f7e783845053ff7fb436a15e4bb8cd4f3875debec0. 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/ATFR02101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad49357f28a00cbdd762c56558d22e7d8638ac58842a4efafccbe86f6e00982. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ATFR02101012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f931d5fe71772a117a981064418b7ebf2377be138e916aaaccb8a7a2f5343ec. 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/ATFR02101016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484062ee478d5de98d74b58fd5fa3e95e85fabea646faa483aef4fc04a1beda5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATFR02101017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11daa36972e5f0ef5e588ac0921d6f52f063805ae3e4a4bb3ff758e808a0d511. 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/ATFR02101019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3824f1317b86352192f93adf9a2d15af83fe7bb5ed2ad3f7dc791842f966bf. 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/ATFR02101020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd04bb50171705ecc44ee8286e566af436d45c7e35c0225fa79c4726b7d90ce. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATFR02501004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd653cd7a56dd84bdf764e26713e9ca413803faa0ddfae392d00d29f3800d4957. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:19Z), 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/ATFR02501019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128e82cbe40b439c658a87b4053aa1596825ada39b4a82359999eb7a5cbc17d2. 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/ATFR02501009.