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 0xe4806f1d1f283001a8826d475c7e341b2839f2517d8cf0ae69b518ea1878c1f5. 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/4044c706-a7c8-4a58-9415-322c704b492e.json and https://artists.proofprofile.net/proofs/artist/4044c706-a7c8-4a58-9415-322c704b492e.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 0xd18e49bcc05c9c55c04e08ca8ac83285631afdc7b2d2975d999d392273175b45. 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/ZA56E2250374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b7ae23ec6eaa4cb8a83902982614f29fe4ab622862b8d2f8242bbc0cb2e025. 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/USA2P2465663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793746c99434fbbf38c6f1cba60f655c1e245dabc88288addc900b632f898a1a. 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/USA2P2424115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9180d899a4036b7a0966ede4829138b6e5d55f30f0a90cf332cb54381ce811a3. 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/USA2P2405768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d47daedb1c43b7db4479a3779d94263208cb51fa55fa607e87cccf9831b034. 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/USA2P2405769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662acea21e542cafd542c67a467bf731e2a8523f1869943f2680bbf8b60ef00d. 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/ZA56E2304762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b5216f119240af24038bf84af6338b4749ab54b686ec8a3653ff28bcb033e4. 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/USA2P2349037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662acea21e542cafd542c67a467bf731e2a8523f1869943f2680bbf8b60ef00d. 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/ZA56E2304762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de7928e1c7a478a55c6a450a5dd89107a2106d72244cd09a4c204eef9f276bf. 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/ZA56E2304376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73e1449ccd2fe79c362b4ee8c6f9575aba325d9660e48cf4c0f5a8ec34d55e9. 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/ZA56E2304377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8838b1bc395988efbadd723708ba82ae9647f573f0b619b71bf34f02732c8621. 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/ZA56E2304378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a0b38f417208e123d6a4d7a4611ee3eaf4e692615c9c0673830998591ddef0. 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/ZA56E2304379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4db7e297770a2fa172145a0ee88b85746bb1ca19358c443fadecb54007da08. 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/ZA56E2304380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e49bcc05c9c55c04e08ca8ac83285631afdc7b2d2975d999d392273175b45. 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/ZA56E2250374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8197cc8b095cd94adf2d00817300106b7a5f833bc01c2605771380f300b267. 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/GX53U2358052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f7c1d1de82b6f312fc2c79cc64323257ff6e6dd3136af35a143006fd189e0a. 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/GX53U2358051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67ae083ca010c595596f1a79f49bebd29b9aad54d002c59c489f1d79ccf25a7. 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/GX53U2358049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafedd5599f367c29376d33a65ea983437df9c6d553470abca912cb2e7ebb93d. 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/GX53U2358057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bb94645a78f09963ded35592fb11140db9affbfe0576ba4583eb6a89dd4d5c. 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/GX53U2358056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106f14d36dcc032dd10b6091ba2d444269189c12a5f8903763ab85c4b8e01bed. 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/GX53U2358059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848d815efb3e4721f6f21f168ab22065d991f36bc19dba089eac399ab4370fce. 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/GX53U2358058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e56b2043e2ebdc167e886bd3ab10bcd97b5b03bb71bac5df0339dce264270b5. 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/GX53U2358050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91359b4a30e5af7986fcc55be64bf5e14387cd4306c198ec132a5d7a5ab9a51c. 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/GX53U2358053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d15fc62f5c23627eeeeaf674926aa9038e2a09bd5f02c0ac83556f8452b312. 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/GX53U2358055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf531b965eba312cae32db97f891b071da44e987424adcc38ddec9221a55490d3. 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/GX53U2358054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acfa340ea21d924e6a58c405e6d8a6e93e154559ef8f4b4ce345382bf44e6ad. 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/TLVEM2453738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa2359709d49e1bd9c24adec13b9f2090fcef336cae576dd569995b4963a919. 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/TLVEM2453739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361530737e0e39259d57cde08f18edb01439b5c2bb9fb7e8587b68a786659fcf. 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/TLVEM2453740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1246edd9fe626a7995599f6bd54c481dc88a9d102ae1825ed9bf1be7f2aaa383. 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/QZLBC2336823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e37816d16125bfa2b454d412e7e539f13e252d0731a3aae42e169af2a2aa98a. 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/QZLBC2327104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e1757a13fce2bc01701c9ea7ccbcb757a45b7b70926faf60ffd004e1f89001. 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/TLVEM2453741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cf70cfec093f780f2fa2e58348edf8137768d1b3a02f8c0d0fd438c4a1f609. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBRKQ2386075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630e3091e655833e1f0208d56f0b29ab224ca6017b2639cfa9892efd0e85cff6. 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/GX3Q92534634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e365d95e886ccc5661fbe8620438380a92a147b953f9676e4a8918bf2b54c5d. 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/TCAJG2504701.