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 0x70d12fe55698405d860b1f1fe0b63f45bb2fc7d1f788ffa0268e547d62d4c044. 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/3e580ca6-be2d-49fe-968e-421e23147f15.json and https://artists.proofprofile.net/proofs/artist/3e580ca6-be2d-49fe-968e-421e23147f15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ĐÂY LÀ RAP VIỆT 2 (feat. Rhymastic, Wowy, LK, Karik, JustaTee, Binz)
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 0x6bf6822da5c558e2e92ff62d38c8840d9c6e05a7f88b9c48a9b6c435bd3b4a93. 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/VNA112100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046808bd7bcc8c2651ccd35a4a99ca08b3d7f1a6589a49fd2742dbd98ebaa29. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/VNA112100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bbff8ff384fa6e280f2c1080d77a8c3c2ad43fe36df490e2bbf9acccb72288. 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/VNA112100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a8a183b120b260b7da771b261ecf27db954c78ffe2be77ea45c4d14e9e349e. 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/VNA112100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ed6ec5b2228e387d89db00de2113a72702690970ab07b9650229f721ed28d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/VNA112100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc075a5be67bcde14d255432ad42797ac4f6ded24180f9093d07762b0cdba53. 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/VNA112100199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f469a1326b78a65a52d38585fc57cae548bfe65c4ee847b1b53ac8cade85d3. 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/VNA112100200.
Đây Là Rap Việt (feat. Binz, JustaTee, Rhymastic, Wowy, Karik & Suboi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32334ed35c34d2c2932cd8aa8f9bfa6b800036a962e3f39cb232b4dbfdcf6d4e. 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/VNA112000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900a6c89f60d8371b0d87dd76ae4b724450389cab2c6b4dde634a72140fe9f0. 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/VNA112000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54dd265dcb100e5aef541603232c0d979ba4795caa44f83914f4b42ef478cb6. 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/VNA112000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6383f1c6fe00508f45091e7141fc9508b7d08859f6af3c8c49909b5847531b. 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/VNA112000287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678383579af1f2e7663863720a22723cbf52662a13f4ada9ad37451078c40b29. 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/VNA112000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0624906fdf6ff32b8d27b7f637001fa3530383e2b6e868ca61662c3e1aa2bca. 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/VNA112000289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25abf6886fae06e20a446c8e4af3d16359afcb22fdea43b8fa0d08f29b05aae. 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/VNA112000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e08e418eed0f720695b94a47b2e6f60aca4cf60bf59494dd1b64dbe156b7cb. 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/VNA112000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecccff86423fa160eeb059439239b819f830c1ab313b2fcbef3bded4f1781ce. 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/VNA112000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f31ac16917e171ab7a255f6fc1ec6c19f426b02f5a90f6c0ecf4a56f52de0e5. 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/VNA112000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a72937111c04c4de2a986125ef2c67e46c1da0a05d183d4b80be55612bf09c. 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/VNA112000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421d5fae9ea794d573856c513c71aa6d11514786597834f0cc6f0a61c101dc9e. 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/VNA112000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12871b84f95ff9a28e772fe2480e1cfcef039da41b95273d5b2e20146d968b51. 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/VNA112000150.