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 0x00fd2a018d12e84ae3d95363066e7ca45aac0c976e83fa2fbb74cf1d80289db4. 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/4942847e-2367-44c7-a920-88ee74d5362f.json and https://artists.proofprofile.net/proofs/artist/4942847e-2367-44c7-a920-88ee74d5362f.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 0x3c63ef9cf79c78575887a6b48df5a9d6f368d8e292cf09b522a507b84dd44760. 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/CA6E62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc4a5d9e972628df9832ed45dde22e07801349a46321fc65d24186bf2d3a841. 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/CA6E62100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a517c0d78f747748985717257bffd2381b4d76b938b2e4df50d648c14e2fd53. 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/CA6E62100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9bd60b83872daa4cc03202c09a68b1120b7e9462fa64fc2fcd58c6c8d776d4. 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/CA6E62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa8a98cd8b5a5a25bd2e7513a0a0d96edab75f5a106eec49c2c8ba9e219638. 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/CA6E62100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9e5e452d0dd4c050461d4e0d69ba9ff43f17eb69f5648462f94a857d3b7c7. 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/CA6E62100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a247e205e383fffffa105a8400eb5722536c116fe4c990992b371196d91a4d6. 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/DGA0Q2363404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dcdaa5da63014f3132034caa7b12d5c81600167a4b2ffd3a54e3f92147ee61. 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/DGA0L2381146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872febd9d335d106cc4b93fa2cbb3335f71dceff09e967444befa9850d31bc16. 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/DGA0Q2363405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3039ea82ae102246fef26964211af7d165a48f08b6d8db53e06d190413e00b. 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/DGA052368429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000459862f64e49545f9c973c35838a0356b69b075307434510c50392252122d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA0Q2363406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e4d7dcc4c3657be3caf0ba336f3479d07b65e6cedd440d921b851819f4268b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA0Q2363407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fae79bff5d66553a512ca1f0fa472d11aeb3aa3e5a019048aeee59e8c0415be. 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/DGA0Q2363408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64926d8545d704fb1c897d2f44678a44952c5bb0da5af4a6052ec1c42020cff4. 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/DGA0Q2363409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77793518097a85265f879e0eae884d0457ced4e43d98e4840009c9c48dc7e90a. 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/DGA0Q2363410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd666e1d9e0b219e0df6287bc748effe2524c0bb8b7d4d6751d8bee0d23c6d6b3. 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/TCAGY2388701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eaffbe77eb531e32f9d73d2409fa80f4083b2311980c9ada86dff7d6d4bf74. 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/TCAGY2388724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c88613956df05ca0494046a46b802871c73240605d0d5a2bd17f63c6517580. 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/TCAFH2085260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa41af0ef595e01106433a25f3a2a848ff785b7d53afc5eef236ec901bab9b1c. 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/TCAGY2388773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96577427f63ae6480af5ef18ecd8a17783984b2fab8212ad7e522153a6af63a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAED1962689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f52bf1e08c8d6c03f9b87042be7d3f04e42def8909bb1b83d2c85e52185d95. 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/QZFZ61976106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa951c83a3813d752954b8c0a62532747eb36e51df0c2c250a5650116791cd776. 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/QZFZ61976108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9502d9a2aa4d9b55023cc2ebc6c2694d536b739266397cd2bf4d5c809424a3. 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/QZFZ61976109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62254272af375d0664de1c5b417476f56e33255d4f560ba2027a0be59f91e405. 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/QZFZ61976110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186b0bc078addd2c6dbcedbe281222c7fe950560015bb02fc29535ad0484b9e0. 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/QZFZ61976112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dcdaa5da63014f3132034caa7b12d5c81600167a4b2ffd3a54e3f92147ee61. 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/DGA0L2381146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3039ea82ae102246fef26964211af7d165a48f08b6d8db53e06d190413e00b. 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/DGA052368429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c88613956df05ca0494046a46b802871c73240605d0d5a2bd17f63c6517580. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFH2085260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1c70e79581e801efd541aa21e99be7401a769d52f9285627789de2f3ee9364. 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/TCAEW2073892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96577427f63ae6480af5ef18ecd8a17783984b2fab8212ad7e522153a6af63a8. 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/TCAED1962689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1b055744c1354f2bce5206d0fa306a0ecfe14f92ed3e3f7d6daccb0e428c5. 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/CA6E62000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1b055744c1354f2bce5206d0fa306a0ecfe14f92ed3e3f7d6daccb0e428c5. 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/CA6E62000052.