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 0xcc52ffd4d9faac4293cf6c14e15aafd9632f2fb749d8edf24eb78e04d160a56d. 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/9fabc777-7c0c-4eb2-9f06-a7d8350b6a72.json and https://artists.proofprofile.net/proofs/artist/9fabc777-7c0c-4eb2-9f06-a7d8350b6a72.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 0x6b96c66afbacb8243c2d91dd7526db51924b2a222ee0720f6f72088168ee7b17. 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/FR2X42193543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d4202d5fedead3adb8950aa53d8981134268b4df87f7880cfed4b9590b095c. 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/FRX202167137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c17a035115ffaad2324a152d08587d59969c17dc990da1c7ab64cd565493f. 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/FR96X2145293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b96c66afbacb8243c2d91dd7526db51924b2a222ee0720f6f72088168ee7b17. 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/FR2X42193543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2c5d6a27d2210844730dfa028ac7be5e56db3eb0d5f338cf07aafa5a6a55ed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X42180012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99aaefe30db669d472b9c5d03f170273779a98a84c724266b9136c709109cc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKN6K2301265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76ec6c7be1b385a2f14834e34849bf078fc99214f4b2fa0de83eabec79d395. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/UKN6K2301268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99aaefe30db669d472b9c5d03f170273779a98a84c724266b9136c709109cc4. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/UKN6K2301265.
Whistle (My Nu Leng 'A Little Darker' Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff0c441d45fc1afb3545c1d7c85dc7838f13ca29aeb9d5383e4ff8b320a8d06. 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/DGA082377560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ddb5a24901079233fa3bc923939bbe90632e46cbd33503957f0dec6226d8e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA082377561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d25a0875fe50234ae86ea0a63f51165f64a142c1c95ea3e9323b9e8a981097. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR2X42354440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea972c17c9c3d378720de643c412031805811aa4386413d614b6b09539eb767a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S2369602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c40fffdbae2d46907b330d68bc4dd29d210fd99b9cd2ec45cdc34806149e13. 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/GBKQU2312989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f8c082b0367d8a16ba1755ab25f13d06ab28764c105e2c19acaf85f34f2609. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX872208138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053565d4ebaa2554ca12c0d1d315233b4643166cc75442e028d4cb52a5cf192f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/UK34N1800705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f8c082b0367d8a16ba1755ab25f13d06ab28764c105e2c19acaf85f34f2609. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX872208138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57065b39780f330ac355ec9aff200c5fdf8561a8a897c21d29758a44aa62b948. 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/FRX282259831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8881b2b788e8af788a62a360d2a06946f239941bf20ca9b5487e21250758091. 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/FR96X2294464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c17a035115ffaad2324a152d08587d59969c17dc990da1c7ab64cd565493f. 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/FR96X2145293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2c5d6a27d2210844730dfa028ac7be5e56db3eb0d5f338cf07aafa5a6a55ed. 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/FR2X42180012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690d2852010f5d29963e6d2e7b8e75aa882a88a106da1b96af72e4e461e0f02. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UK34N1800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690d2852010f5d29963e6d2e7b8e75aa882a88a106da1b96af72e4e461e0f02. 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/UK34N1800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78e9e631623e76e7489caf195c900bfe181042319345a3b39cf6aac73839f04. 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/FRX202086589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d2a62a527e8a7ffe19fa25aea14480cf3c9afc60b1eb98ce562aa2fe8d1ec. 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/CYA112000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4726a0218ceb5205511de6d550e3ad8adc0f9eed2e41b1d7cbfc46a8c1249643. 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/FR96X1948319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1f12978d3c9b92bb09500391360b9f0ca84d2af015b2b6c65be831dd935fa5. 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/FR96X1948321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4726a0218ceb5205511de6d550e3ad8adc0f9eed2e41b1d7cbfc46a8c1249643. 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/FR96X1948319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd1e710a5112e992ef9d56ed49029200d877e4dd3c5ef7e87e90a2ec8804c75. 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/GB8KE1859083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c2f7cc587000c4a07c5a14f2fbd1a0cc2f080d7010f8cd30e68bd0717159a5. 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/FR10S1901500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c13b0b19330cabdfc8919c4074d3a35b164bfa6b094f4215671d69cc4ba334. 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/FR96X1852681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bed5852f8051fc8c38a12c57607d702f35644aad9d5bfc01ff176a56ba3fba7. 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/FR96X1852682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9700d013c58a1d667eb4329d4ae559ee655e3147b8eac0657bf1db6b0104f415. 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/FR96X1852683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a37bcda7bfb813ae2f97472e3fc4189dd118c73879d8ed2fdb763d1fdf176. 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/FR96X1852684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a37bcda7bfb813ae2f97472e3fc4189dd118c73879d8ed2fdb763d1fdf176. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR96X1852684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9700d013c58a1d667eb4329d4ae559ee655e3147b8eac0657bf1db6b0104f415. 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/FR96X1852683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84332de03597b76f987613c27c22d4c41589af4f2e5243466092e6afab7ca4f1. 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/GBPWR1600581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09566a5b5a64bdb5cfc62c460bda53afeffc3457a9b004be1ef861c645361f24. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKK762210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd989f1c377cc0a24f1258a717e676a986a1081d1ca427571a16267a8a1ebbb34. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKK762150006.