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 0xb20cef82dee7bc35d0886e45a57214a812dc52f16606a751fb993d9e4a8692ce. 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/784d17b4-c1b9-4bbf-ba24-6cbb5fed9245.json and https://artists.proofprofile.net/proofs/artist/784d17b4-c1b9-4bbf-ba24-6cbb5fed9245.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 0x1a91f367112f545ba5ffa9235a31a5e87f6c7828f134bab839366043f0e3a181. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:44:58Z), 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/QMFME1577698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70a6440e8c07bd65a1649fc3bf5177c9c12d865bed7bcbb2a708d4ede73efa6. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/FR59R2240690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf162eed014e6878b1948ad36dd1b752a1a1d0cb3454d95a9a01b8c24d579f8b3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:51:15Z), 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/QMFME2228955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b338020d824ba5bb3c1b47a67740541721e6fec2ba83f72f6e4a624ab2b5d59. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBKPL2146500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca265d3fbb0810ec8f80ffd5c955a42bc29e5e2e5aa01bcba1f5ac21195703. 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/GBKPL2146517.
Anh Thương Em Em Thương Ai (Son2M Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63938585efb90db9f3b4b3100f93485768e0c3c7e47eb4cb123e6ca67b58c299. 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/GBKPL2148487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95471b4b487662ae8ba8a390b55f282c13a2673f3daf4a207d32327e2d41436a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GBKPL2146521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6955b4c365d4763c8400bd44b2491da0607ffd4cc88ff3e2c6352f052cc45e5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZN882130250.
Ai Chung Tình Được Mãi (Minh Prod Remix)
Ai Chung Tình Được Mãi - Minh Prod Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2f4c864877a99b76a256c0f0871abc7a567064207766c1700c94d950831412. 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/FR59R2290528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24ce85961dc145853577b3d326c101d14caf17595d55b93a4357c4cf17ed7bf. 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/FRX282209080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb600608415cc03cfefd02666434921d9e6c36004831944cfb6af08f7cc3c3771. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:45:37Z), 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/DGA0H2397466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3819b53532652364872afd126b8835c2a32628dff65148fdad8aab91538ee5. 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/DGA0H2336691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca265d3fbb0810ec8f80ffd5c955a42bc29e5e2e5aa01bcba1f5ac21195703. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBKPL2146517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d12630ecc27666a8f481a516282b02b8b4b43df9adfb8f525ed462667be79ed. 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/VNA0F2319144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579818b104559ff444f2241562705cc1d0a8f42d149461e42d4b6b4599acd27e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR10S2481839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b799d172dfe73c42574f081ed93dd61cb0f1e6363b89c4e5d10a7785ec73ca. 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/QZYHM2415743.
Mashup Chuyến Xe Cuộc Đời/ Ai Chung Tình Được Mãi (Quý Nhỏ Remix)
Người Lạ Thoáng Qua (Beat) [AnhVu Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d47f7375d624f920d2b659eb9b66b967bc0e953fdae26fc9994bd0df8966a2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZYHM2504199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20a086b89bb705fb78e379c3e92761370615b91f5a1a1ab51af2a0e6ce445d4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZYHM2504580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc846079fd25f478555042a2f15cdbd210b97e8f9f934454b11e708ff8eb086. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZYHM2504578.
Đậm Sâu Chẳng Được Gì (Cover - Ciray Remix)
Đậm Sâu Chẳng Được Gì - Cover - Ciray Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95bf61c896b776ab866854d344eb4ee9ae190c90f6e16887ad75a4a126b66b1. 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/QZYHM2505657.
Giả Vờ Thương Anh Được Không (Ciray Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255cbf32690e7fea7c7021996dccf4b78f41dfb6170439dec64c5db2a106c941. 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/FRX872437521.
Giả Vờ Thương Anh Được Không - Huy Pt Remix
Giả Vờ Thương Anh Được Không (Huy Pt Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa53d39e2112cb7d8f1be11390280ceee1cdc2c393fad80b00a756f9d368a0f3. 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/FRX872453363.
Anh Thương Em Em Thương Ai - Đức Louis Remix
Anh Thương Em Em Thương Ai (Đức Louis Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f25a013fd2379bbb2cbaca0e3bdccba418f5a9beb25a54f97240c1dda34f07. 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/VNA1M2281642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc30de67bce39e3f09f9c128ac1d7dd9bc5ac95905ed61f1006f815baa5ee60c. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FRX872437532.
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