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 0xce76476ae542d48dc46a2ef405644a20b5a23199ad68f6f15052304c95641740. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85b4a410-8df6-41c6-b6b0-9ef75bb16c4a.json and https://artists.proofprofile.net/proofs/artist/85b4a410-8df6-41c6-b6b0-9ef75bb16c4a.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 0x97767fc5a9e09ca1ea9fe5b8609d364e141927dd1222892cd2255b6e293e2e8a. 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/QZNWU2483158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1155135bec05b9fb0b9efb90c776c28191e5568e990d5ea980eb1bf2034b4ae5. 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/QZNWU2483159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ab71a4f395f1b01f1ef20fd870532f37a275110446baf64c290776e55c11d9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZNWU2483160.
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 0xeaff9bc1b1f5823779a2dda380358200f246b8f0068c97c5b869b428b84d7975. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNWU2483168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c6341a3e60fb7df469e375caccafdb45d4340587ebc546f686cb202503825b. 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/QZK6L2331752.
Danser Rundt I Klubben (Without Warning)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ada245dccb81b7deb17762a7ce4fb56b6daf35854a27d7c62dfd13da63a13be. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZK6L2331753.
På Sandnes Blir Du Knulla (Without Warning)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f21cfe0c58e8029a074fac8e2dbe7e718d687440fc50af9763ffabd0e8a32. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZK6L2331757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb13c48dfce7d45f16c221946169a8571306307e39e18e8c6f8a35954643fb6. 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/QZES62354377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e5b5682ae1c13e82809a617d0508dfe026a3ca54cbf3e337b29c7de3fdca9b. 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/QZES62354379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607ccc16f70e4d2e73849ed74b2eecff58db4aca46268306286cbb67d263313b. 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/QZES62354382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7799b9e335ef5091c38727a66340ec9eb31019375ba68be0483cea2531621501. 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/QZK6M2420889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9965367f124fc228e6f4388126276dc72244ef2e9491fbfa8d7e24c3e7ae1ebf. 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/QZMEP2348910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2073ad702780279764c5d3d03a4cc3cb791bec7f3ba9e22be6f291fd931c2b. 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/QZK6K2378800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7af64221c29972a77e9166d7953e657d402d7e3f41b92f07547a8c0fcabfa4. 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/QZK6K2378803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12ab49533c860d04d596fe12616828fb4dabc3ed621fa388f474f3751f37efc. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZK6K2378801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe319145d52f3b87be60be545817e9dbf8a3a89a4884cb704f29ba91408a89402. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZK6K2378804.
Ræva Dær Har Turbulens (Publicity Stunt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa057686dce97f9a7df68aa9cb50a16652ba6d6963e9e8471c107e3d6692b8f0a. 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/QZHN82317359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f7ad85d245bc599f5d537a172901848b8e9ba466f5f7c09ee0dd92a7c43154. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN52308874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e1dfd2e5b141df33a014fab9f8f0ce7670622c3d4b3b02f9756de28ed220f1. 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/QZHN32337519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31971324cb0e945e64ef6cd73f298a46af307ef8d4fa5a510c113954b634130. 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/QT3F22400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db2b609a3c1a589125dd1b4d0afe104be4e03cf9d4de83de042e610555af74. 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/QT3F22400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4849645e3cddf8fc1119a3b277b89b26967b15baf8a7010e5fe34430a27523a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QT3F22400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbd8dc931549e90aed978287057a0eeb1ce0613a9db7ec0bee87bee8511e00a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QT3F22400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b12675e419367b73131e175846a674aae32cef1a958a020541939eb567bcad. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QT3F22400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b223fbb412f1eda4e73771f5edc310ea1fe9d674f3a384a08e2942c78b3794. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QT3F22400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5760772b2ebc40ee3a0956f8084696cdbdab28826b541dfb13298c1c0a46c6a. 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/QZK6K2533256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8faf120e4bd2f81d684b32bccbb867f09d8606d79a25357ab3122d970ae002. 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/QZK6P2528436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b92d33ccc03f5607ca78ee324750205309e7fbff0ba8806296d79fd129ccf5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6P2536689.