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 0xafc5bd586a83a8cf32585c3577362ef25b1c12efce6d5f062fa348970adda72d. 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/d06edba7-babe-4ae3-9f9c-509c7bc60fb9.json and https://artists.proofprofile.net/proofs/artist/d06edba7-babe-4ae3-9f9c-509c7bc60fb9.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 0x6427587f0313e892f73c2a517f9e58ddb9b39e94f2f447d40b8ba4b498c5aba9. 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/VNA0M1842236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112061d9b8a2c9ccc6b05cb24052c1ccc8c106bbbc4a0fcbbd27e125c4c17b09. 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/VNA0M1842249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06889fee3c05abfe8461bad2092a479da4aea1f1eed228f91656c4924855b8af. 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/VNA0M1842251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363b6df4a40eada74cb59c6fa0de6fdd13dec57e82cdf70ee04fd22faac38761. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:36Z), 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/VNA0M1842247.
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 0x9e50043da3495bc4119165051398c5b0a3cbd2c25f47aa421e48a29dab2169c9. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/VNA0M1842234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ce72767daa1220b35fb3879bf56ed6624fe7e0c7a7a9c7c25f03b1742e7210. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/VNA0M1842237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47f964cbc33a1c4049979a1c50f2f97a92eca3f349cb1d2c77dfedbaf18ba02. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/VNA0M1842238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf604b90b756d37247223c66578d2f9c3ba6d2a290b01d98deb0bd98aac2828. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/VNA0M1842239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bfdbfc7155032df053f601d30143a7676696a9d3834ee7a5bb4ea5531a50e4. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/VNA0M1842243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dab47e535f55edd344abbad2698e32812cd99e8ca79e76b44a5108624f01cde. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/VNA0M1842256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c09ccd1dd7554bcfb98f351e412f77e8aa7c601c8b51fb8216af1006df106f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/VNA0M1842260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447601b5fce531ec8798b1dcd632a789951779d2899f0678d0e5926e83211cc7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/VNA0M1842261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7102342b3f32c5fd7b2ee3ddbe378eae8971482701094f4cd50f2edd2ef46fc3. 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/VNA0M1842265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b4a9323c3baddb341e4f11efeff23ed7a5e3c611b239ad4b88bbd15a137fa. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/VNA0M1842280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc6e75acfe82c14e61a07a7219891288a4de8f35cfc9d57de3e6bd3a40d999. 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/QMDA72193732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e90dcd85029cb4640746bbcb0e005fd532c13d0e2cf25223729344ea44fd7. 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/QMDA72193730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80c141051fabdd7e3f634e3a363163d94312f21869488104bb777dc5c9fd141. 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/VNA0M1842081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a050788fbbff0e74ae8e04c114dd3b175a2a6e5c625ab150d8a8eb13d16ea35. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/VNA0M1842080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a73bb3182bafe48909ec238aed347eadfb0ed484a50b38cc199a7988ef30b. 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/VNA0M1842175.
Liveshow Dương Ngọc Thái: Một thoáng quê hương 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc52be2cc2b20a691f1db02f36f5ab59c47ffe2c7b649eebb93772a792277942. 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/VNA0M1842112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60da3da08569c016b37f4ad6a26f335f991f03fe2bf815bbfecb79d7cc3c07b3. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/VNA0M1842108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77687d84bf7d21bee4dbbff5890f0b2b6fcb2de44f0835481248d21e5c91701. 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/VNA0M1842110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24da2745832d06414a904dd46b266e012b013b6a7dfdf15bba9ba7cd51b593. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/VNA0M1842116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47278c3b103e0d15880a63967a2ae87f224f8db147b02d059e2b7cb9278c4e9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/VNA0M1842117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa267adc9ea4db5d2d27bd2241fe619808f200076792dd3219894dd557fd691cb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/VNA0M1842118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25b46de8115a128c4d6ec139d1ed2be5466510dcc0bef0afee5fd0c4ee03342. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/VNA0M1842120.
Chẳng Lẽ...Anh Không Đáng Là Người Em Yêu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d92b04637638fa193a46f128bade25320cd747f6ffc2b2babdb83fa787ea5. 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/VNA0M1842127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0574d6d56fb9c1c16f3cca1ab3a1aab6644ef987d4c640ca02d5fa3bd3a16f1. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:31:38Z), 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/VNA0F2329855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe75e830aacf05427387a6f452985f68e7abe7d546c802b785ce5df0bcea06e9. 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/QM4TW2450578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b571bd6a2412a344b7adc19ff40fc1480c4f8237fb780073fcca3a57e6dbec. 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/VNR011132213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be9f96ab99dde1b6dcd11706c95d3f98198839837fc192fe3120ddfeee8efce. 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/FRX282157878.