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 0xe419189bceb6f688422e156ca53dc33c622e67245cf4b6a0c93f2ee00b7d4dbe. 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/edb0843e-ab74-417e-9e72-18f5cdf4fc87.json and https://artists.proofprofile.net/proofs/artist/edb0843e-ab74-417e-9e72-18f5cdf4fc87.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 0x6a21eabc271f11912b1c09fcbd9c6cf91f0804bb47984e62a11e3b25aea4b7c6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUBEC2477844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2bf62b8babbeed8637300071425b9a28c413c216f57b5c7fce00cff791f9e6. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:55Z), 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/AUBEC2570328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf641f3f1f98ab23935167b5227c832466decaf1a3044238ad8386e691dcad25. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUBEC2477846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf641f3f1f98ab23935167b5227c832466decaf1a3044238ad8386e691dcad25. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:10Z), 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/AUBEC2477846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777514336e4ccc2f7cf2298c923cae3580d562d4c20acb2ec772d8c195cc23e7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AUBEC2477847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7308a7053c6e8d4951f852f5f842e892997adbcae4ea4364f584dd2bdd6fe4. 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/QZTB62256801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8569f5226296d98bc4b295ce452f368405ae0feaa2a4561e0346549f2bb78227. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZNWR2422955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434abe7f8728d5b3f3d8dd0108be81fe09c361b5ae43b48d0c3e93e05e2554e5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWS2452148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434abe7f8728d5b3f3d8dd0108be81fe09c361b5ae43b48d0c3e93e05e2554e5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:24:31Z), 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/QZNWS2452148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30a54dca66b718943e7303b9de35980c66c71ed723567a64405584f930243af. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZNWW2469395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca4492d2fa301753851caafe3f469994250c488779ff7f46cc43191a0bcd905. 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/QZPLR2458822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca4492d2fa301753851caafe3f469994250c488779ff7f46cc43191a0bcd905. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:41Z), 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/QZPLR2458822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbac1f53bddff97a76747cd0bd57b31ec9080ec9e5c2ac7d71547ab965eaa5dd. 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/QZRP52425072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba827ef507da7dab873c62badae0eb30b7d62d54afa411a6a74f161b34f8c31. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:53Z), 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/QZK6H2597500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439a5875f5c86df92be80114e1a20e0377e45445b47726b4c044464e2c758513. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFM2517184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e1d589df19eee7a2578abd6f43a90cc8f0516de4f5789faa3b77a6a8ff4604. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZZ7Q2578172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd273c78c79a74ed0298840a2e84a65377cbfd7620bfa81b0e7da7cac5b9231. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7T2570567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5354a02617088b90fcd110db90a11e8ee6bceed5ec38282c37f5269ba25ccd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7V2579332.