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 0xdcf0901149371bd967bfe9a066e10179b4cb5203194491982eae8b9104970205. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee6f45a1-162d-47f4-a4f0-cd655ebfed2d.json and https://artists.proofprofile.net/proofs/artist/ee6f45a1-162d-47f4-a4f0-cd655ebfed2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mortal Kombat 1 (Original Video Game Soundtrack)
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 0xb7014304201ee38ea210cbccd605402312be892156073aa3a7ec7da0cb83a99a. 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/USNLR2301390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2d6a1632d584c6f8b0c90a12ebd576cf946436c221551d3c716922f8c5333. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USNLR2301418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2017b07dae84aea7ac31da3166f36dd9dba1c0416002cc79c4f88f85f395867. 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/USNLR2301419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec658af4762500a08e1b2774a68d98038760eeb04200b6742c9b250a75c58c9c. 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/USNLR2301420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a85971730d9c0fe96bd8f9408965dd37ab48599ea652a2bcd447b8093d92038. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:47:42Z), 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/USNLR2301424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55cce0b717c6180192ac0c8ceeb7e35210d5dd492d82e7d00dfeb90d6af93e8. 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/USNLR2301425.
Feast of Jerrod (feat. Andrijana Janevska)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81f3ee76424cee7914ebdfff2c22ed36778083bd2594b563daec3dfff06232a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USNLR2301426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1113f6101cb800cb0413761a6d47ffa8c4f6f6d382c6acce2d444808f2f7f722. 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/USNLR2301436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846ade0093b818406deb8f7764b8476cbe1b636e81d41667e7a09900acf2131d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USNLR2301438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0a0bc8b65078a7c2c7eb4b67caaa80cbf8de47027685f1c1b6c7221ae3978a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:59:20Z), 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/USNLR2301441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9528769cffbaaab2c125535ae8f251cc34daa43291b3dbaf95d720131ee05a6. 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/USNLR2301443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18250c96cc2939fdcee801e1bb17f038d0bba727fc86a2346cf14ae9c0d3506. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USNLR2301422.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d38ec2af464a17664a1a017ebb6039490a7868f232e7757be05555ff81fa61a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USNLR2301428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b4283b66e6b50a7c86e0b12290b73f794be375314113e8a8a5a3cda064ea38. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/USNLR2301430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8ad154212b511da01afff5905cc62e53d16b2d7f94c312f32946d2ff60d470. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USNLR2301432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc455925ec073c2211e5126b0901bf0bc898f757f1d69aad0046d2e8745750de9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USNLR2301433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21114ece16ed95166a6b98812f2dbb3af6d944d9ecc13271feb8d0462086c8fc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USNLR2301435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6646e997081f227eaa4c06ba6e15a4ebafcbc899ff001aca46bcb2f36b35921e. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USNLR2301439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fe5730e9a84ae81395fdca2f19fd8de0c049bd76f7a0d946f62509cb4ef318. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USNLR2301442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375325879b9bbb0a88f95c88d98c67aa653ed90ccb6cd2282fffa47a916ff709. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USNLR2301444.