1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf2fe935b626d76f9687da8b5bce2fb5ef14a5b11ab0c970e539339b22c83f763. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a1b8909-ef5e-4317-8d0f-9a8f14194c06.json and https://artists.proofprofile.net/proofs/artist/3a1b8909-ef5e-4317-8d0f-9a8f14194c06.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 → block OTSBitcoinBlock must exist at that height 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 0x13d7761fade563a010e36832d994dd27faa14574f92a3a7760e3741420f81996. 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/CHF032412191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e8b0ec4a760f21d7f2f923f6411e54891def9f17a12f4d673ad3346a3efeb7. 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/CHF032413091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4bf5e7ab77a704ccd68be14f2dbe830950a1519dbfd089d25f805a0a8469cf. 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/CHF032414785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1c5bb6d6b9c3e8a5f71a5d95068ce9073078acdd9cd39ea6cb976aa271e49. 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/CHF032416375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36286f99321890dcc30b0b145752bf213824b39a5827f23b04b6ecd2605d120. 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/CHF032415450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3f083dbe1ca647093fa3d2652ae9d4536b617ad7f4e8b73fcd6cac0d5f983. 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/CHF032415947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506e8c02bdd893a80a6cd8c63428ab9e9c2138d8f480224685591a67db3d411c. 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/CHF032416376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97347e8526f26714b2f22d551379e2624657b9dace6ef12e134c6bc7294b0086. 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/CHD522200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab1e9bf589a993851296505732cb80acd24c3c2faf6c1166556b5d49fd9042. 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/CH7812215031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc695c6d6cbe3cce6b36278abaae2312d4d75df7a1121b824da09ce018ad229c4. 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/CH7812221430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a29f2b59689e5423a806e7192823c126510767c14e8b1b27a4932ecbb3e07. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CH7812221431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce1705464830d94b7dae2d88d6fefef66ff560d4c716237f0c6235148d1ea89. 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/CH7812221432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fac1d8ed298bc2fb34f6b4c153828db50fd1f6ae7a5fdf5ab2e08f59c2b640. 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/CH7812221433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a83f2ba596f05e0fdc1414f5aea8587914a685bf6071958c1da28302317dd. 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/CH7812221435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec62ca1a385d0d7267fef694b3b47f37163385facffd895d293083f357f69630. 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/CH7812221436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d9c0307e55225ed736e3e34996e5e787a95d7b9ec750f0e6aa5554e386488. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH7812221438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3f083dbe1ca647093fa3d2652ae9d4536b617ad7f4e8b73fcd6cac0d5f983. 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/CHF032415947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36286f99321890dcc30b0b145752bf213824b39a5827f23b04b6ecd2605d120. 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/CHF032415450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4bf5e7ab77a704ccd68be14f2dbe830950a1519dbfd089d25f805a0a8469cf. 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/CHF032414785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e8b0ec4a760f21d7f2f923f6411e54891def9f17a12f4d673ad3346a3efeb7. 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/CHF032413091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7761fade563a010e36832d994dd27faa14574f92a3a7760e3741420f81996. 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/CHF032412191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61058943898690a00c083f0b481d9fe6adb28d4542dfaf9e1c82990928c45f2. 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/CH7812228238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a00d4933a45e8bbd43e8752f933791bcd6a1433800a2bc2dbebae26c28353fa. 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/CH7812228239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97347e8526f26714b2f22d551379e2624657b9dace6ef12e134c6bc7294b0086. 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/CHD522200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab1e9bf589a993851296505732cb80acd24c3c2faf6c1166556b5d49fd9042. 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/CH7812215031.