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 0x62f1088acd708f9ce5f34e97e9d40e61be8739ac8c2a0bc5020aba9eaa406517. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c91409a6-2f02-4816-a6d0-b7c9c65c144d.json and https://artists.proofprofile.net/proofs/artist/c91409a6-2f02-4816-a6d0-b7c9c65c144d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fuel (feat. WESTSIDE BOOGIE & GRIP) [Shady Edition]
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 0x24afed7353fa807a37f9a907600c91bb7fc8cef36836ce914e954380d208bc19. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZJG52442371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4a14c22d9e92090e5a641bdb64ce61fcb591d33f2a163cb3535310ea327c5f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2320415.
The Death of Slim Shady (Coup De Grâce): Expanded Mourner’s Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee0e48ba680027161263fd8d619612ce2812c01b45244b542d43d05ffaa05de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12403447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e522144649557d369c4edb7df92d28709ad7c3e5939d446109a909ebd7458. 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/NLRD51952516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd892763aeec1267aed86b623426dddbcaac088c035e72506d5a6b23ddbb87c04. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLRD51952517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac5f726a816683ea54be3c2ed91675a5bbca722cd288389357608bf0251c21b. 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/NLRD51952518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd648a5627c5585226719d110c3cfa517534b7ee06d4b52c779de1a7848dd203b. 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/NLRD51952520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572fc822392e2d138a9dc9186de631936eee390a9b9a6411736e3dfa1c985a21. 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/NLRD51952521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a93157b1dbfd703324e6fa7e8352c77bb4b688a0f9b68ac26bb884d2670906. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLRD51952522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698ad45978f8dc129a24872a760ff3eb429df3e9540b7ba43ef6cba8d0f9b6eb. 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/NLRD51952523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de035cfb9c4de0654364f677e37336ca1bd82aae092c08f7c5e866e921f568e. 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/NLRD51952524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc3711d7c95f26e0b587b118a2e7d8c57a4d5096c1fe68e98dce908c75208e3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLRD51952525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dd069149dd7c832bf65f86f8dfb5f4509e5246e251444e5ade8c77c1e77c5d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLRD51952526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69570e43a9f39cf90a64daab30f3c0ec07c5880ab669324d8b23725862b09ab3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLRD51952527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07733e933af6ce0e9dcf31d3f8d535d1fbbf978e386c6ff23f42c2b35108afc3. 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/NLRD51952519.
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 0x46d81d5d13aa97734b18fb2c825006c31b187c8415ecf133307e885a463ff677. 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/NLRD51952528.