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 0x9f22cf85c3e6032134b3d1ed91c45b623b1373ea367447f0189d9706767f1ce1. 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/484df516-189e-440d-b4f9-2692cfc54c2f.json and https://artists.proofprofile.net/proofs/artist/484df516-189e-440d-b4f9-2692cfc54c2f.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 0xccf004a2e4ecfee657a6821aaed45ade2ae8b023a2819bccf2a456936d80f47e. 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/TWAN79060001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea011c505dadc9f59c0c5ef2babe5e7c83301fc56b6daace224eb53d0a21f270. 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/TWAN71260177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a144c33ab4cfb4913e3ed67beb616b64993b5355cf0c214fe9f4be20614e23. 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/TWAN70760271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f878c681838d3559ff1918a043917b793d55b22770d70ceeb742af1d358b205. 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/TWAN70760281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2548354dcf2b51765e327a9b484e539cd7746921cbdd134ad07fb9bfdb5df860. 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/TWAN70760282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c668fa7af3a68bb622e4f21e7962c8e0873be9c2e852b94672a3d449f6b786. 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/TWAN70760284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf0a71008c95deabb065690a8240c4e80e577458c88e3456553d2eb5ddc2f5d. 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/TWAN70760286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554e15d900be452aff134a336f66c7ed044ca8881564dccfd48b8ab290048c37. 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/TWAN70360801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c83833836e43b1cdead38ad094f3937a9653a8c22b62843de74967b6e9ceea. 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/TWAN70760269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a144c33ab4cfb4913e3ed67beb616b64993b5355cf0c214fe9f4be20614e23. 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/TWAN70760271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7396007fbc3565aa433d20d329642a492aa8405ffb5340b1d5dbb263b26d48. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWAN70760272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974af9d27b3cfd9fe5696f526aeb27a4db2db534957f5f1a557df6b65ff059b9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWAN70760273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90a0c1b61c03a4948a6f0b9b862ceb06323bfc55ef93545a3211d837e5a838. 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/TWAN70760279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da7280763aef9adfcc21a38d7b77bef198a0fe07ac1eeeea0504065d1b2e186. 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/TWAN70760280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f878c681838d3559ff1918a043917b793d55b22770d70ceeb742af1d358b205. 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/TWAN70760281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2548354dcf2b51765e327a9b484e539cd7746921cbdd134ad07fb9bfdb5df860. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWAN70760282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c668fa7af3a68bb622e4f21e7962c8e0873be9c2e852b94672a3d449f6b786. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWAN70760284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d956dcc155518b510007b1636bb0a72dc68211b8073df772c1b8fe2d0f119e. 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/TWAN70760285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf0a71008c95deabb065690a8240c4e80e577458c88e3456553d2eb5ddc2f5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWAN70760286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e44ee858d189638018e4abc2672bd7f98d36ed3f1b709326be97aae292cbd9a. 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/TWAN70760287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ebaf274d6a10615e78b56c245c8a7da994fe39ad4fc76cdb68d1bb753d3a94. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:51Z), 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/TWAN70760288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6272e2fbc93d8e5fbd042933084f74f1513380b8c114057860d2fcaf170914. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TWAN79060016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9bfb08af6dc7c620324b5cbfe2b1d2ad42e0b32f9a53be8516e3585b052cf3. 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/TWAN79060023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135baad1aa7a100a4e14a3b7b16b19dc110cb15ffcfa219c59f77f28f1d6544d. 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/TWAN79060025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a7abf2a70ddaf46dc3b230b2fa2e809f643c9f53fbed1d02b7c7f9e5b79c4f. 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/TWAN79060026.