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 0xbd8a27a3d4860e5e335b8c383e77ecb6d9db4ba20fae9e78f92b7aa74732e7ea. 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/ce2edb5f-83d0-40d1-bea4-5d4fc478a7de.json and https://artists.proofprofile.net/proofs/artist/ce2edb5f-83d0-40d1-bea4-5d4fc478a7de.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 0xd646c1101389be31c2afd11adabe081aeb8a25584b096bd6b01a7e1230ea0209. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:02:30Z), 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/DEA310600977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3d02c94c0218ac2af161f4fb5e6bcba4453dc0f94f3bf6e857138da0973b1b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEA310600992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab28b5c8031b97c6b262d2975c4eb72e543e1247b246bdd8269a6c86ceabf29. 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/DEA310600784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16224f5c58f5b9aacb66ac4478da2317081eadacfbba27d44121bbcb1d7f33. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:30:26Z), 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/DEA310600218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ed89bf8732cb0449085f52e2bfbf5be543b509dcec3ac6e0ef36ae71f0a560. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:35:22Z), 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/DEA310600753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39806251a91fbeeea3d7df42d55a7f47c43f2cfc29ce0fa41cce9b99fd1fe4d9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEA310600868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74d775b353f79e37dda2e153dc4f7d3492c037d62eda2c3968b3f1ce15a4cef. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:57Z), 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/DEA310601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2bbd5200747afc6154761fab5ce693fd901569651674a57fca605bbc01406b. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/DEA310601058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1defe764bddb2b601fdd5d1ccc3f3125699a7f56e5a554611ac1519dc7abe611. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEA310601141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79533fcf12b35f2eb922cb383e1163eca844893118361194668212203d226c24. 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/DEA310600870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b958e700fd0565a51330c75293aae80203afb5290de5a9dd0bd5520ef860d4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:35:13Z), 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/DEA310601071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe71a24d5fa4ce5ef74bfcf8f328d6849e6da368161bc33359071b875799cfd3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:23Z), 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/DEA310600473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc53934d9178a8839479eb3b39091be0618ee54b928323708397d111ad3a71b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:15:57Z), 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/DEA310600367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd669a970b01f710ce70511c12506596dab087ce35f71e98c68b529033c7f4424. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:00Z), 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/DEA310600971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6149ce10aae3aa99ea166889c49d2412158e92aa5472926b7496535c4339441f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEA310601279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31397e04131e86583e4773bfba42fc83e4129b8d4b1dec49b156e3f092131f6f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:35:47Z), 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/DEA310601014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8fbc0a0c920ec44fb71e5dace6984d7b426a16565e72d78def193c5a3c8c90. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:37:37Z), 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/DEA310601063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5908f5999ccb0b4f23d31b331eb385f674ac89ed755bb8dff709bbb495ed46d6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:03:20Z), 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/DEA310600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f49c7459e48baa1180d8042d266baf27d49ece039f8c1f75b9493b6c58f395c. 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/DEA310600629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef8f64c47f9c80dba0d3c2feb56c595e70fc0f4096d74fc022787614577e8bc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:02:35Z), 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/DEA310600716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaaf0b3263749e08f07a8f12c73a6f138e582052f2b6e40b20f43948c9f2c56. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEA310600628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045a252fdcc9fc04af2c1399316fcffd18c8e206cde5cab4993a1ae054760cd7. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:32:21Z), 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/DEA310600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394d6474fac5a889bceeecb7b77daebd3bdc8fbe0a1beb864e76701d8d266e40. 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/DEA310601068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b797bb588cfc0df9ab1e03cf2337308cfb7f63ba7e4049271b2dc568beeb47b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEA310600979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daf7aa35c389c6a8171b4064013b007754d432adef51d74b831ade4d7158a35. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEA310600475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1527da4a2589146b6c5f306faa73523fad2c77865a50234e69249b2f0d8b85a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEA310601018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677304adbdd83f9bf600cc114506d641739b50e536ab61772d2273f4c831d7d3. 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/DEA310601090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd669a970b01f710ce70511c12506596dab087ce35f71e98c68b529033c7f4424. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEA310600971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394d6474fac5a889bceeecb7b77daebd3bdc8fbe0a1beb864e76701d8d266e40. 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/DEA310601068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2733a8eaadc287633d23e2d6a1cf8257e41ccec1a995cd753d52b0fd4dc78e60. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEA310601034.