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 0xb91abba55f7d421a46a5133fd9d53cc4d3d407bdee487d5b998f31606684938b. 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/b8d817ac-8576-4ded-b5c1-bb72344ec6d8.json and https://artists.proofprofile.net/proofs/artist/b8d817ac-8576-4ded-b5c1-bb72344ec6d8.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 0xd693d2ad5e97520f7f0f47fcbd43e42a2fd1cf83c00a494bc53d9a8fc84f09c6. 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/QZHZ62210539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4318cc9d014b73a5305ae5ca46c3649e9b35441493e931ba76dcf374c871fc9d. 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/QZS632397606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a978a8966ec8f62a3b16f73e782f43c9cc12dddaa0e37a9509d73907c5afaa2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA092354957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabefdaa8fe04b1684fb2255834bc9cb56dc9ae45ff598677e90e759b0afc3cb3. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:27Z), 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/QZMHK2219734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2edd297368529b6c8c5aac629ce3026457d5e108bfc87009dc899efedaae88. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMHM2456131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662ca82775dd3e20c2dc54c9907c73a64b04a6e5f8ac46d283c46a8cda9ec804. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZMHN2424423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94f1804f965498fab76a452eb9945a66ac1d05506b0b510a1e365a54e40f4d9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:54Z), 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/QZGLS2579068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22de3651718af5f546e1ccb96f63e88509726398e3e195f66b8c8023f14de8d2. 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/QZMHL2504390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9ea2bc6b23a811a4cfe45c77ee2773abb4596c46eb1cd887fc7457f97f919a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZMHK2549722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b152c9503a325b00bce0d7dc87704c57faca13bfc948bac5103c849b67f33f6. 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/QZNJX2415449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a785ed5f096f7c23fb53918002abd5377c0b3125650971043af3097e46570b1. 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/QZK6J2311021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde4574750c87abf21845b658a1f42f914d72aa977c2b39c264e9cbd036bced1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AR0E32400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe959d58f2a7e9e59c477346bb847d0d587882334eab43b5923c4b52bc45ede75. 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/QZMHN2249179.
Bibi Espacial - Alien Tribal House - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2355b529ee92d5259c45628b5e8d375fa598624cd2cb63f13ab847e7e7a498f2. 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/BKBE02200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f19055ea345d4efc0c5a7cacc12822d4ce3e2595adbabddcd9a69d4e239c0e0. 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/FRD9M2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d051e45efd35227f3aebe4755f24e9a0478a55587c75f5cecda6cb99eb86fb. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRTRB2202947.
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