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 0x153ceefaddd9b0acbcfff0497841e1473d5a625f249f0fa6c3cda6df343bbbd9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd01d407-2e1c-4c8d-940b-5d5a37d1ceee.json and https://artists.proofprofile.net/proofs/artist/dd01d407-2e1c-4c8d-940b-5d5a37d1ceee.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 0x911769cf8ff8260344e1f312c6e76ab10ae14ef980b4264b36f9a6af21c34059. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:40:33Z), 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/QZK6J2229797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86046f125aba5f118fcb9b54e3376e82547815ee85dd07bf413fd6ab8b1f78a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWT2243811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac482a0eea3ba592d7a216d71218f0c5a0af0d0a243117048903c69563a8918. 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/QZFYY2314892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e6ea642e480cf180b41c55630f01bbd64a232cd04b1046603aec58ed685a16. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZFYY2314893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d893509d47270a4ee7f3f8766096a1091d42f28ac3aa963f19561c1b4354908. 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/QZFZ22324208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b92a63feddbd676ac6b468728a8eb53d45c77dbc9e303d5044b9ee30066c21. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZFZ42341536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6025711b7b330ff34ba6f1fa14b48f20c14d1081c5c4d351c2739a86ff28a. 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/QZDA52372048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23268a2f0f4ad273a8b1af4c1a2fa3db02ed19aac0e08fedbc1fa075f37cf1ba. 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/QZES72303498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87290d7662f31d44b21406007794d5e7e922db9806afb79666470badd9639b69. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN42364336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e127ccee751dcc6e56e3f1ad8690349906707e407bb5c5445b6da39bb2e9fa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHNB2339858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1e7e09f57532827ff955d8c09fbc9c4c22f726007e9f3fdce7284ef176278. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6P2358101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd0025c47131ddbd399c0462a5f3c695904059c1c4a9e25ce5232ab0dba3b9f. 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/QZK6G2330021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9b15f7c14e18240dafd545dfadece37d858fb4181c602b981d7030e882bbb3. 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/QZTAY2348404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be48fa193f3db726ac8f74bbaa0e9a5e4f062f6fc962987ebab8866be36e903. 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/QZWFM2318451.
I DONT EVEN WALK BY SIGHT (IDEWBS) CYPHER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034420c73f6e0decd4b1e08fc7da3509cf6e0f14aa5c13cfea5e5ab63a9f3f5. 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/QZTBE2336099.
I DONT EVEN WALK BY SIGHT (IDEWBS) PART 2 - Cypher Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9e178d465192a916cd8a09563df954998899f2661ac07ed1e745a2cf1a3c0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFR2376578.
I DONT EVEN WALK BY SIGHT (IDEWBS) PART 3 - Cypher Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d184c6429bff94d092937298a4ba475e74e007500ef12d15dade19e4ce88e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFR2376579.
I DONT EVEN WALK BY SIGHT (IDEWBS) PART 4 - Cypher Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0132cb94102b0c0bb6cefae687425c87f7b7edb513679216b136ac50722157. 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/QZWFR2376580.
I DONT EVEN WALK BY SIGHT (IDEWBS) PART 5 - Cypher Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7291bddae119143ee312713311c4312e78dcd6f1f3073a59d235e898fae2aa. 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/QZWFR2376581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d47c5bdb28a5d0fa64a9abadddded68af38972ebee6b17e3a2fd6d03cf7d8e. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QMTND2300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2030932da27c81d9aa211d387f4f03259e6521baba9dff5c24dc1d2686c6ee3a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USUM72407422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb337f3ee5f2c22b96df27a28409286a63240333792d61a28482d2254ffe47ea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72408723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc8ac31328fc1b0c70ff907aca9a5e66b4ea0d8bd39646e3211117bc11a2e92. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USUM72405529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e11a05e8fde46575af7098e8c146d4817d6c25ebec67a889060e6e2f999e97. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:31Z), 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/USUM72502007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7940a191f26718e8af536adfcc9820ac375d282d96a5f5273e8baf3ef0dca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMTND2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f6745846d7cfb6da0549e389328db556ab39bd0e5f9b784f44b3f363732462. 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/QZTAT2305058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43484b6ed3de08bcc678ec034b93007e622de054c4c32e31eaf7659af193733d. 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/QZTAZ2307653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7b25b3add48728153bbc40504552ee946a29b5bf4f8aaed4970ce8bd553663. 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/QZK6P2322244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d66d1ec41778a6febeccac348666946f99282b0b9ae5289cf949ed9c7c115aa. 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/QZWFN2398905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3ea5b346fc6cb903ee81a57e3a491659020f5c36895e429a48cf646bce1496. 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/QZK6M2337469.