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 0x639344c96d6d628e4556b21001d3913928b2c669dbd1a0cb1f91de3523f81819. 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/a86de7d4-dbf3-497c-abb4-58bd6bda5bd9.json and https://artists.proofprofile.net/proofs/artist/a86de7d4-dbf3-497c-abb4-58bd6bda5bd9.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 0x411cc940c7e2e7f245bcc3ff9a8c79f8ea0509650537f196e51fa05d0ee96181. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHNA2251684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0d2c089c25cdc728c78bc37a3fa6fefc748fcc0ea076762a499e139c8217d7. 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/QZHNA2251685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1964fe740418f3c7014c4cbd8a34396c5a53b67a1688c4fc5fffa306b790d4. 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/QZHNA2251689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e72aa2aadd0c26411f35652a0564a20b1875c9d8c36082b5afc65060c60670. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZES72384157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a1c8e030b173af3619b3ecaed2455e83a253dd2378302e6cfed6989d788cd. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZK6M2325192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf3c34e4ca3a7a6e9c41ad206963f3c19ce0673e55632294cd478e7b4f3500b. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZTBC2380980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e8aadbe497531c16ba7d65892283de2f285f467dbc51d1c1ea9148d5f85b3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTBC2487930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322febdebfb4c64a85ea29a26f4efb8d8e10e0f1e0d29870ae42ee6632e64615. 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/QZWFU2405847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39936aa0a705bc9674828427d12f677940335a0fd1cf01672b57385f431cf86. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QT3EY2403876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140de5c9500c58787322b80e1857fe44b9b6676f944482aae344580507702e3d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3EY2403877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf747c35d4a5511e5c2fcf9888675b071433a02528725d7b76b5fc3cf61263118. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QT3EY2403878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f650e5be09f234b53cb00cb306bd3bc126072d569241629cb4415d5a3d6980. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:29Z), 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/QT3EY2403879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fb852bb23815fe20de8c2803aa6ba8e89d51cd476b826a0e24d6cff822499. 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/QT3EY2403880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32ab13f7e0024192e2b2e857620cd4944ad2035356ea0bbd740197b61071dd0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QT3EY2403881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210da42c03616ada1cd877f53ddfc71d45b1bc7dd56379c45ab84233e9c5b39c. 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/QT3EY2403882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb01c1ec78705d46f1fc8cadbaceef3ef7107e18dd4b22c321f6bc98de27a5b7. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:53:56Z), 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/QT3EY2403883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19306ed1bbcea619f24dd77e31600742954d2d361904248e8c2a5ed75b05fe54. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT3EY2403884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714aecf6c72531aecca6fe313e2a64015660e3bfa5698f8c212ef3418960860b. 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/QT3EY2403885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49679658439d22d4fcdb1afe96ff898574085d701563a0a99b51ddc84bb6d01. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QT3EY2403886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e8b420ff9cc56377fc6b8fb6b98256bd7b96a480fcdaa2ef77a6625c0dfc2d. 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/QT3EY2403887.