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 0x323dfc73c6e832b9e65f5205148e8a6f4410c8035cd8822134e81ff8a268c0d1. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bb2c7b8-0c46-4f06-a8bf-226cd0dffa9b.json and https://artists.proofprofile.net/proofs/artist/1bb2c7b8-0c46-4f06-a8bf-226cd0dffa9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medley (Hakikat Sebuah Cinta, Satu Kesan Abadi, Suci Dalam Debu)
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 0x6485e79060e46c0f975515f3a8b76b0839f3c97ad0274e6cc52104f80251da41. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MYHV10700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1bab41e113ffb93bee38b2616ebe493d72e9ebbd436b0fbebd4c591d6f5e44. 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/MYHV10700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e82fe8680d7baa3e1a5aa6ee65fb39a43ad86ae50a77368ba7f54f03daab3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/MYHV10700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b17486cc76f23bd1170441d1c4e8747640c9a70f0f70e7958f44c273eccc58. 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/MYHV10700214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3466691bc2c9ae53df7674537a0ffc0cc13e884071a6ccdf8aa10bb56ff3d449. 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/MYHV10700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb931a169e27eaa043b28c6dc2f658533245251b16fa02e9d48b84ee397856f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MYHV10700216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8ee8e4884ffe93e88d9107a61c65c7ccc384b6132722dc27d2b1960bea9200. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:28Z), 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/MYHV10700218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f98d671e5a9727b466adba9a2678268371fa17dbcb3b578a96860ff32a3729a. 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/MYHV10700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e86f6ef7f78b834b1bf4af3a42cf50b06045431b6249a757f84cd5fc17b14. 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/MYXZ12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c330e08f635f91a5d1fd42eddeb2efae7a041429e6274abe4f1377fe0ce428. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MYDT11700026.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch