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 0xfc1c29fd3d267cdf4b2851e59ecca56e8d4efca71f489979875ae8d509bbd2a5. 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/65d65248-a879-4d85-8025-c5e30a18d902.json and https://artists.proofprofile.net/proofs/artist/65d65248-a879-4d85-8025-c5e30a18d902.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 0xe9bede66410e23d8f5d0c3d20c670afe58aaa57ebd24fbde98664a09bc527bc0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLC241700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837f80f87d492f8f97e21bb2f99b73d9a151a56ac27d2dc317d1b00cc7a40acc. 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/NLC241700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455694790e1248bfde1d394429e8b9711023617d68462ce1011fe78a3901706e. 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/NLC241700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19278e49cd807618d7aae74f742a64d6d35d50ca78f02f6593dd3f74b353dd14. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLC241700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68682e5c844387591d731426ab0fd49b624ee45b81f159fb0940740c3a7025e4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLC241700203.
Who've You Been Loving Lately (Single Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09d1e933314c3fa79a555bc1bd72a109a446302c3043fd039832d6dd4bc94fd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLC242100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fe37ac762f18a059bda9b8f65ad0055ba1600b796d4e3a6ae37520744bbc4e. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/NLC242100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433dc09f13fec3a2fe5ce7bfc5d82c0e8041d18b01b697528ca7f4ccfbbd7967. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLC242100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5df2201e3f0085ac39b75ff089ee4f8822fffed8a479bc616960ec05ef369f. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/NLC242100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40998a532ffdf4b2840f2d2ae75d871a14312e5bbc41ebbc8fcd7f302c5605df. 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/NLC242100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2be4176721e3dc485d876ce86248f96b96b7b300845486d02a6ff3d2380242. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZAKB2381690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0213cbd427b9e23c2882ffc91ed82ca628912b04dd15b742979415317a9db9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USRO22405006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0213cbd427b9e23c2882ffc91ed82ca628912b04dd15b742979415317a9db9. 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/USRO22405006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7948e0c90dd8710c7deae4cbf01fc912cf756bfb3951483283726a6cd4c0af12. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USRO22505055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0213cbd427b9e23c2882ffc91ed82ca628912b04dd15b742979415317a9db9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USRO22405006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0213cbd427b9e23c2882ffc91ed82ca628912b04dd15b742979415317a9db9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USRO22405006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7948e0c90dd8710c7deae4cbf01fc912cf756bfb3951483283726a6cd4c0af12. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:07Z), 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/USRO22505055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77135f882baa29da952462d8a8867cc5faa990549328194c7ead203137bb950. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USRO22505107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122a05685d0e0ecc5b782f88d4e3597369cd457de89df3f8c5db9e5a869bb630. 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/USRO22505119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d608f7b7f73fc178407e172122f0742ece6234c865ea770c142e4c20daee63f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USRO22505118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7948e0c90dd8710c7deae4cbf01fc912cf756bfb3951483283726a6cd4c0af12. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USRO22505055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77135f882baa29da952462d8a8867cc5faa990549328194c7ead203137bb950. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USRO22505107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180a0d344d35bb39578fa9238cb2ca6c062cd9e21cb7b94fdb3f84be323c5d6f. 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/QZNJV2455455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a821c5c3bcf6a49def5ec766efe56290119bed4faffe7703222dfbc040c1b18. 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/NL7ZS2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fb0f99ac1ee2688007a52db074b00d0af02899c85bd052a93477ee30e07b61. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/NLC242000109.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498107e7344676fdb4ff153dcea8848023dc1ffc5930d181d686a06a0ed45de9. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/NLB602200244.