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 0x83742b6af961016431a80554156fa64bf00228c9326f9fcee21fa0d847bcda20. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fb035e6-37c2-4b47-9edb-938ef58cb080.json and https://artists.proofprofile.net/proofs/artist/5fb035e6-37c2-4b47-9edb-938ef58cb080.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 0x398339675a41bb7451c1034d7de31a4a87b27b7615160ab68ccd8d655c9d9c21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872202423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f619831e55883e565dd97a44342e324abacc139e8b35934fee7b75f37439351. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA6D22300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdde78e0a48e89fd19040e5d42b698979fa62a948fe4e00aa70150d4cc15564e. 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/CA6D22200678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9765c01396deb02c526ebe6d02f9e15dd2f0d06c853aae8c7e0aa8653c6b39. 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/QM6N22232949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee9a708dd2c7d2acbe46785afca03ad753cfe89becf38cdbca1a069e6db525f. 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/GBKQU2385417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459a269b7d184f122cf7b5a1d034b5b316e549975dc6f0918d1a17a5ffab29b4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX5MY2263941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc87ab790f9efa29f7b6876a1be29cc82e20db41d9a445b1c815b65b12ae3e9. 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/GBKQU2210684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713ad1a7474921a508c7f010f782a930735f1eb5cef41f65777893ad2210550a. 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/GBEWA2207800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b94a7b55612d95ab95d9571151b4c87d782af40e1151d1d6dfbaf82cc82ca06. 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/GBKQU2387214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac343896a9725ab42baf37af3ff2420aab1b2bfca67380b46099f7f43b9389. 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/GBKQU2387215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc164f56d9402564cacf414f8fc7519b32e5e75f58f99e13c69e0ee049a82ca64. 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/GBKQU2387217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcb4c995ea4ab60a82459bd4932c7263ef305de6e31edf3160c64f47d3282da. 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/USUS12300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ee5d3b07e9f9d2f34d2c0bd57a78a6d038bbff0f37d6a7b930f2861db35389. 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/US83Z2311452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f173e1d2324a4f65ca8e320e5f89bb85fff57f7dfaae518874bcf07bae0544. 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/NLD682301648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627c37c3bf249783e06c67fe43d0d8178e8a2ee79172e7982b0b13a201bc9c56. 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/CA6D22300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d36b29eb041803ad5d19664381c73cc12e1aaad9287606ef70653214843c0c. 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/CH3132217258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff508fdb749cf680d2b05547b7e0a3098fdbc2003ce9631fa77d4b96ec07c4. 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/GBLV62203847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625883158322ed7fba69cd30ced0bd7307aaa14f49915324d121cf6554f69c3. 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/GBLV62203848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170481e20ab9499522b41277c3e8d1e78585002599fe4e3e3a8d11486a3b6723. 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/NLF712209152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877b5dc38ee79af9d122ffd69d14e2559a0b909e20ac32879883354c6efe6b3f. 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/GBEWA2206080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2145e49c374f032bdadf9105dfe4e212848120d1de736122d5c2a04103eab71e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA2206541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a47cb12a168ba75494617e526c46adbb0722d31beaaa09c700ab4f41b4b147. 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/GBEWA2206542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ed08a69a6b11ae502dca07910d29cc115dbec42bda8a0badd4f44195f99281. 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/GBEWA2206543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acdacde5d6e7ce6f6858bb62f5d821b33ff76d7c023646e65b652da0401841. 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/DEMA61905770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877b5dc38ee79af9d122ffd69d14e2559a0b909e20ac32879883354c6efe6b3f. 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/GBEWA2206080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11bad5ca15a84c65dfe245941efc7e58a7c32814e5170bafe78154f7bb82446. 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/CA6D22100789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555ba5f2df86cfb9c6acaed2d06707f336c955d68f407063be8e51fdfcc7e273. 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/CA6D22100790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778131fcdb3bb7bca7bb5ead9ac3b2e4de1b7574b4f7d553bfa48b6e6c175a3b. 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/GBKQU2121628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1c182031ebce81525cc6713af13fa232bcb11123dd38b13272d459968d3ac4. 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/NLD682101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef079f46ca3f869a4bf08556ea14efba02c6d1bb4d97ac6adb880e51540e449d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NLF712102046.