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 0x921d3412f7e4dfd1d157977433daccff5f1cddada3ee9f61dff4496bdf3e7f96. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/400fc29f-7848-4e3c-ada3-bbbd31b87e7f.json and https://artists.proofprofile.net/proofs/artist/400fc29f-7848-4e3c-ada3-bbbd31b87e7f.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 0x27cd4a35b80e5643bb415f7171a9f27eb7964d0e54902fd070a6ce6c28fd1109. 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/GRSTY2301919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2565b873e43b2438a5f042168a686721c834af02cf3af4e3cd55faad330200. 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/GRSTY2301920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd50f2bf942c830b0ae004b27e8a171b44992763156162f494dda1612014d42. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GRSTY2301921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06138bd64eb44335d201dc37693558427bdcea5bf93eb9b6fae8f48ebe7ed928. 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/GRSTY2301922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d61625174f2e4b2bca51c3e7ed4c152911444646b8001217a59799cf35cb76a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GRSTY2301924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679bd448000586c099ae228eb8fe2c46ba626e5f456f53d8f1fb65950d4d6f70. 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/GRSTY2301927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de4da354e45327be8554f60f9245bcd3d09a5b1b2e69b4c51163888510b533b. 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/GRSTY2301929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7217fde4224616bc6e188d03eee784e11902890e239d568dab7cb7f2327ee136. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GRSTY2301934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4626cf0a6b9cc2bc6f4b89d3861c671709c157f6c5a76420532513059971e3bc. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GRSTY2301864.
Mou Ta Lege I Mana Mou (Gamo Tin P**na Mou)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0639693d4d594a72c6abebf2e2f3aead0aea87e51d11bdb0c5650e2c24c1916. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GRSTY2301873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb0748e8bfa17946eef92b63da5c31bc08ca401195e1c042ee606a52180cdb1. 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/GRSTY2301882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c8d31d1e2b2b4074194821abf9741327feabf3b31eaab866d31795c6dfa09. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GRSTY2301884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1f0d5d2e4f762ae150f53d9fc598f134ab0d92a9acdd5a0491f605a1bc8f87. 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/GRSTY2301849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6d6c3bcbfc842b33592a6157f9e9dd5d563f996bba8b1306226c2e8d1b8a68. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/GRSTY2301854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb363a0e79678d6064f5e5569e306db829d4932498cd4005dec56374e4038d19. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GRSTY2301855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261d24a8db3b98c216cf26edcc7c28e66fbbe265978de51a053bff0e64d3fef4. 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/GRSTY2301858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309add2fb1821300851e534c7d3d78d658a206e210b5b51b44d7e6920c5fcc7a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GRSTY2301860.