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 0xd3a198b55be1bb7de308c027722fe7d1c7e4fb0c29673e525801dc0f7099a5db. 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/0450cdcb-d501-4f03-ab80-9dc294dc8f68.json and https://artists.proofprofile.net/proofs/artist/0450cdcb-d501-4f03-ab80-9dc294dc8f68.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 0xc14cb66997c733076d625f1b35bb1c2904dc65ad4a3a4b39ca51b032e7d2744b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAEP2085219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81175bb7fbe1217b3abab3d3165ac605c5f3a4b2f718f7f8a93c2c419ccb0849. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAEP2085222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3484413fb9b2d5e07915736ee87f00e096ad653ed74fd27cf95fb60dd13228a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEP2085227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d3445c0f2cf88046a8b6170a828d076eabbb4b3fb9b3cc23e17dedb226b33. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:28Z), 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/TCAEP2085230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb557eec3294f2e01cb196e448dc37909647fb54d3675d6c063aaa78eab6fc846. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAEP2085233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab50025151016d9156dbd2b806b04716496bf7cb49dfb41f42a3f70eef44575. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAEP2085235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6965fd817a2e8d4d619851efd6b240973dc985af32b82f5f5e8635282d5a635c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAEP2085264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d203c2eb1a90b67bf055922210adc1839e76f73f411e5322445ec24b0b2c7b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:29Z), 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/TCAFF2065757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b9223e0c3a40c90c1832a45946dfe20cdde14349f6c9dbebe5484091b4203. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFF2065932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b66ed4c9e58a12ee506122f4c4c7b71a83958b48e0a2c80fa8dfcb5bfa790. 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/TCAFS2135459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f24a54d625836e2eea7525cc9ad0a8954538d1b508d87ea9e4869d8d8cdaa. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:55Z), 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/TCAFS2135535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff172a12faa2f05eccb9e8a89f515a88ce6392f1ddbcbdfaf3ae9980dfed5c26. 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/TCAFS2135547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa6a8672497c2c649560a70a676f06a423aeccb39edc226284e0fe49e3d3608. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/TCAJB2477604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef95191f8df5bb67da1b7a71135ee624484188443d06e7e244d0e1f35332b1b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJC2477691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c69ed4acb4a6459b41163b16defbaf7608a2392eebf388a09ee4edf33f1731. 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/TCAJB2477786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c74406e2c2fd78f1550c2320560ace96b5badf552ae6f1816c6e60b21a4120a. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAJC2443080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b78355154781ae57f4378149b381c86033c009c291cca6d189237a76d8809. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJD2443169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea0f9c704d2c56c8bec950b497a4b6a9b9d4346955c677541925ef0a305a6bb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJC2443186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff3aa3af7c439e75d4c8adbc45044c8d4c9413f91514b88d88ec96c7c49c06d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAJC2443224.