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 0x6d66a43e782d42aac2a0e83e83585bd67d7b132f155a3ce58bfb38ac4ee1e8d8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5a6bbf1-b194-46cd-8307-6617ee43ec6b.json and https://artists.proofprofile.net/proofs/artist/f5a6bbf1-b194-46cd-8307-6617ee43ec6b.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 0xc32b73319d8c1d9d4dd37ebd9a19ee5e45b8e947088dd44bc8a9decf67e5ee5b. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QMAAK2071419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca044ccf33a48d284a894a6ca83e077dfd6cd2c062060bc4790ca0297c14fa7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USTME2210052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b8aaa9d99451c4548adcbf552a45245d2c3d094aa745aa0a2ca1b92866c55d. 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/USTME2210053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d9f7b77612fa784e60916a203f7232c4a0aa029abb9be4f5229b26ea0c67d5. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:39:07Z), 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/USTME2210054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fc1aa3077bce90d2b14a479a92fd7e4c4d9f2f41477e7ac245315da35b62fd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USTME2210055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567646dbc3ba89ece1bee6e53d44fb132863b38c0adf445397817b38c4988344. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USTME2210056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7d2de5d4f8e72a354e2127f22c837941015025fa5902a0ab0ebd8cff8e562d. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USTME2210058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc0ae85feb02b57755c5adcd9195265ed2618b7c5adcbccdff7711275ed157. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCAHT2472914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f46bc6bce09b59c0179b1f91405566765e2d2afe7b3b3999fe7d9990149c29. 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/TCAHY2456580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa269b7505765f1e026932190933795ab214f4fdd0d072c20e99a753cd94eee00. 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/TCAHY2456640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3cfffd03d5a2825ab3f20d7a8dabc43c97f9383848c720368a4ac77e7ca469. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCAHY2456662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e62d1d9950ae1bedd0fbfc4bf728bf2e9f982d50c68ca9ebf28d97aa849773a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAHY2456667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c345418601a666a94db9f4f416c6ade4767a7750ba7a11135cf0cddb854ac5f. 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/TCAHY2456717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30226625b5662556e4953da4caf744026b176d0237073853c45bcddb810dc52d. 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/TCAHY2456771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9667b1cd5efa38ce74d7ad8ec7ec98c63c96cec16fbb8ebbfdd1d0f4d4f02e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:54Z), 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/TCAHY2495584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76856f9280e9543838fe536c571f4c79ddfe046247cb6c4857641847c2457121. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCAIA2406272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5a1b5a1521771a1f71f566824d132c30b51e8683459dc77198a6b2931c3022. 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/TCAIA2406279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ec17a0989f81b849ffadb037e19fd94d9f21679c68234660839e525908a75. 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/TCAIA2406306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca743083272bfe5d79b4f11277ad0e3c583745c07748d592fa17f437e672a784. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIA2406316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc742d7a566e1f41423ae09296d3aca8ebf3c92216e84e6be9750447d54156a1. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCAHZ2483167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3be384fc9547789c0bedde2ccc4e74589fadb37efe839451857d1e88c635fa. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:40Z), 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/TCAIA2406446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa053dbb8aa2ed019a145418a38c9aea0689a07fea9b2d1fdec3cd6090d8228ce. 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/TCAIA2406447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601a75470759dd3e15d425c21bad2a6dff7a1ce11f34356996308623761c5097. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:05Z), 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/TCAIC2405501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ea86298c08c27801b587447fcf4b00b130abf4304385b697ee27039377acd. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAIE2452289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94c0dd228754e475e76bf12b4946ee5b3cd9e372907ad5b43e290973bc9658b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:10:03Z), 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/TCAIG2468719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeef09a19b2f30eebfc9087473ce5f6288a9ecc876b7f864ef53b96771cbeb5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAIH2451154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b4b8e547b27a2c578d4a5d554a70ab1459e0feb93e486dbe594d0571af8b84. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAIJ2413946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36f20a2c51c7cab23671149771d7574ff29913e964d7d5d333f2d09ede58f0c. 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/TCAIQ2477404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a490bd0f7bf19d4442fc89d5f9d945e365da646df8c139d6c60762085d7bf8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:20:28Z), 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/TCAIU2420450.