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 0x0da66ee5960ce76a4593dad997df217dc5f1ad20de48384c126c818a85906102. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16b6b6a7-f476-4d4f-8ede-5dd4f5d4cfcc.json and https://artists.proofprofile.net/proofs/artist/16b6b6a7-f476-4d4f-8ede-5dd4f5d4cfcc.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 0x3fcc2f9de5b8b2aa29eac5bf96650759f6c3665a4ec8469dbca472d4a293ac1d. 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/TWA472392001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627ae70af7e5c356b560099b5d0054319a63946794cb34810f20699c8f30b325. 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/TWA472392003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc926c9c1a63e07efc56807c8e1e81cbb00c4db13ae366aa72a021c4347a8895. 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/TWA472392004.
我的甜蜜沒有多少人能夠體會 - 《讓我看見你是誰》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e48e5a021e67468ea71bc5c71340436047fb1486dd0b6fe9641e4a093614e. 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/TWA472392006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff71b7f451025c840a2e4e94ceec935e8f6b80e327e9f46b2a54a5b00e7ddcf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWA472392008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571223d4b7d8970e9e313255b8644a40fb338e787f1cdf1c155efa2f45576ef0. 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/TWA472392012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786d01923bbc90390de01bf2ecf10495536b988851c5bc4fd584e82d36ef6698. 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/TWA472392013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf17351605ee065b553daea7b770d4039062275a430cff9853137b07f67863. 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/TWA472392015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798bb637b413239df6c9c6458f46630c19bbc73dd8805277479f58aa58380b7a. 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/TWA472392016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001dbe96e1a2b53b14967cda16553df9890d0ab55173eb4abcbb324e088e54f8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TWA472392007.
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 0xdece90757701fb74347dff06d1af2c3f6bc8d6833d596b437d47d21f50c6306e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TWA472392011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649b050172fc73ad7355c7b592b4ff69a1abe8a1837931238dd3ca2ca4e0b84a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TWA472392002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f44e56272ae0bc68b17e86de500baaf7ba2d686082df8b607aa38d2a36d5fc4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TWA472392005.
They don't really care (about us) (feat. LuLU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3258b85ff631cf9a0cb1bdb4520c077a9593c2350a2a96800bc665d221339baf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWA472392009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319bee0d4dd2b6c85ecbfd35b3f11773359e345bf82939b5df31417473def16b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TWA472392010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a31856603f7768035171eb2e1db1c590199d19444b19325050273c6686a194c. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/TWA472392014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af36049f7cadae5030a23796b0a7e57402dd337a4cb3a92dab56243aafd5592. 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/TWCC32120753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271e972dbc47d47d72e60d7e10787c4f7538bd0eadbf6e77912e57eb9a53e4e3. 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/TWJ012303602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ab54ebec4a1513f3330ce510497889ab552c14f90709799ca7469112b4b839. 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/TWCC32200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45966efabdd733d5d4010152c12eba197bec374aff2d10fa0effa0a304d4e0b1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWCC32122212.