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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab199456122af6f396558a90e4bbac895c1fb505909b848dd76e813860e11512. 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/9053c6ad-b13d-485a-82ec-94f63862ecd4.json and https://artists.proofprofile.net/proofs/artist/9053c6ad-b13d-485a-82ec-94f63862ecd4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed732ad6bc98f5a9d2400ed5cad4bb9e5f1ed4e9251728b5092540faab5c9184. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USQUN0500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b24876998ccc23314ada8fcd2720b99a1bf509b107d4db1d848deec434d0780. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USQUN0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe068d43f250d99a6f53a06c83674c32a41369ad85a49b7f2f4c61da0021ce29. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USQUN1100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92828084ef2301d0d8dc0be557217d1ac15f9dae4ede8d84ca6c7458a2832fe. 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/USQUN0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d8eba3e4b7b1b4b8040624e21a41a112ad6926ac89bbc464cef48a03595225. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:56:54Z), 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/USQUN1100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88b28fcb09cdd09ecac34b0fc5dfc0eedc1b5936ab162dd7908b5c1e4345185. 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/USQUN0500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd10011e3f14a7d822247388bec93747846ecb20677ef6dc7f65726467e0fba. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USQUN1300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7930a16559bfb887f9cf5eed791cd4704c299a6591f1805f1d62a7755d2c60f. 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/USQUN1300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e49d3be72f87fa6a3257afbc82e7f1041f68bfaa46c409783698653e91941. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USQUN1500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d811798975ef5408333ff19dc358624197e25d4ba37a315543d5560af24b37. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:30Z), 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/USQUN1500054.
Na Wai Kaulana / Wai O Ke Aniani (feat. Melveen Leed & Robi Kahakalau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43fa67870e08355dcfeb3aa829524c4c71e6f43765ed5d77d67be1905a13e7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USQUN1500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c07fad3a3c863f2a0a53bad0e493d5f70627606023dc8558045c9bc006b9e2b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USQUN1500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0605e06dd1eed7efcd88752ce7d9681a233c5997d3b85a56f1b923cb76675337. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/USQUN1900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d572e721a5538d1a6ce3a0007989b39729c720536a535dd240f2aee65e3c8d8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USQUN1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5815f6ac26ae8c917bdbed38854b3b1b04c1d22af028f187521c51af8858c117. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USQUN1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c1a68ed781b15b61b583ac0a9e510c95ad9db0016bda55f50969b7a1b4a7d. 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/TCAFP2139265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423b4262c27bf56d6dc571e11222493020ddca3643f769da40bd3b17483d75a7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:56Z), 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/USQUN2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180f28e0f589a0487c138670adc9667fe5ce89d6b3d9c070c6b61382348888e4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USQUN2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23118894222ecd3fb7ba9142a036657843906446d6d7f115d6a8d4c15433756c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TCAJS2559174.