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 0x24a4743561c1f973dc73b5b664a07816fb2f412c082847a0742dd6a88c9d2845. 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/2f4703ff-d426-45ef-9c24-7821942abb27.json and https://artists.proofprofile.net/proofs/artist/2f4703ff-d426-45ef-9c24-7821942abb27.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 0xf3a2e177f7cd54d2dc1291c829028903b6281a5be652a18ac0c1d04e1dcd2ea4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR59R2233171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9193c6c0d060459e1c8fe844c2350589d0af030ed1f70caf6c9df2af5bd699. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/VNA0M1908815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393b7d7c5452e505b1c2b3e0ca4e0dd29694cca0097611f84f1006b8976f02c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SGUM72100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf05677f3b367e2f14ca3a5076c14f487013b20273cc9720ee35da5f3a033dd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:14Z), 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/VNA0M1939526.
DON’T WANNA SAY GOODBYE (Special Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd049f0612008b833999b418397e8d29f1d666eefbddb14b174e9021c89e5208d. 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/VNA0D2401532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607a248bd35776b39e2ab640c2894337ea4cffbc0ac1bd9fed71a7d421123ab7. 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/VNA0D2401543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1094ff26450b97f3cc77bae9ab8de94667b8acdb90736533d4bc45e2444900. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0M1942655.
Mashup Mất Bao Lâu Để Quên Một Người - Đừng Như Thói Quen - Live
Không Gian Cảm Xúc (Mùa 2) - Tập 11: Mãi Mãi Là Bao Lâu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7b909b01657da20593a5bfc2f939fb4e0551113839c281bc235bad87826b57. 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/VNA2E2312539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eb70026b23c263859206578019a7be5b17acb7b901b1e1823b46003a542e84. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNR011023103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa939b3d17ccb5f2778ef5bb582654368f989259a45ff76770b051d142dc0c770. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282112698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862a1e4e988aa2eca17231d85e939a05be371676d72b4f9fdbe33414eb31c62e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX202171699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a292e9a6ce6ef7fe48ab7cedaab6ce5fa7b4edb893560c48b81de5681c5a8d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0S2423453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439d11c8fdb2851b96cad40049e24985ba95fd185f6898beed9132dcac49b3ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2548589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8555f7ba3d3230c4b3f52fcf6ed99862a60a84b7a7c44c8094072b0ed3008c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0R2464946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046121be81f6c37d92d9a8485c2041b617ff85fb163dc3351fdbe65c8f9deab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0S2460793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584b464d84c217ba3b95c92a78dd1e4e9355c420fcd423c709c00007c3fc76d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0S2490637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39b957dd52cb2f9733a3e5c4219bd849d6af09b9520613d67c7cd47eb7e0b44. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0Q2433279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa41ed58e0d9c722d39d80e431f23ea1ef7bb1ce41d051b08365b27d24e62a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2576731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb7c99fa13deb873f7908d60e066fd81c107c878521b59a29ade1c3c3a9fa07. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR10S2267771.
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 0x2aaecea7ff787c652b6b723c06024ecca01c9907a7260919a9f9880bf049dbea. 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/FRX282113080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4992888a6f8f9bc12121f85c95ecec25095e169a7de52c1847b59cf19fcb03. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRX282113094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4b85a147173b214f938840a7b8b875fe24bc13381182158e2b5191efa3f4f4. 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/FRX282113116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13890f87c20eb5958c352f20bde7a41f1c4907d98b61dac7ec6d777d2f77e5b8. 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/FRX282112705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2521fb5b1a8754a57c234bf001c969b872040918e45b6402c9323fe4179834. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FRX282113944.