thumb|Trúc Lâm Temple, Thiền temple outside the resort town of Đà Lạt, Vietnam. Thiền Buddhism (, , ) is the name for the Vietnamese school of Zen Buddhism. Thiền is the Sino-Vietnamese pronunciation
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 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 0x34859684f7bac93331de4cd02b48911837238e7a5414aba0567fabc35d70ced9. 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/7fa6d94a-0a37-43df-824a-dfc82900a495.json and https://artists.proofprofile.net/proofs/artist/7fa6d94a-0a37-43df-824a-dfc82900a495.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 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 0xa6809b3881a19fdb5c7792cc6d88ea19f88fa61932eadfc8029b7eace8e4496a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6P2586450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba599e7e8964a01be979d78d2965a3b3131f63edd5552871b8a8772827ab860. 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/QZK6P2586451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62cc1d1a38a7c7b1a1259d935799de947d6841faa4b512f04498c66ee0cce68. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZK6P2586452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd45bdc32ec0fa463395ba3f6167348b71484429d2d89b19d6f55314e85ecf9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZK6P2586453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578736e13c853a9dc2d67f6b29d6f5a5e0433ccc6e49e1ad5ffe5825a15941b0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6P2586454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63917d669eff3c200edad8192a866261d1d1cda1405b201201fd661f2c6fbd07. 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/QZK6P2586455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d899cca105a31d40339910ea8da52f87ef14eed95324d0b505c2f9f5e74995b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZK6P2586456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc46833330b4b6040a913dc43903c04ac7cd5977fb7fbae0dabb00401b520b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZK6P2586457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27232932c8c3cbe67950cfc3c970b28a3d3e9500e6b38cfa32f99f5fd9afa8e5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6P2586458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3c40f22e23db54e310a2fd31b8e0173f30ae4c1307a4bb67d7307adfeeb03. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZK6P2586459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b531c8a61017e98341d04f5b63edfe69c23a5cc9819caea23cf8675418e999. 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/QZK6M2530666.
Thành công và thất bại đều trói buộc con người
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fb75f308e0598880143fab5dfa141aaeef5d3660e39e496c7feaf8148477ef. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZK6M2530668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16cc04f76094065d48e73621edf5359c44a614a8197b1218686775d64827523. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2530669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f952b2595064982567eb69b83803e78bbdaf9821dffda7ec1890e51b896235. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZK6M2530670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d933c1fa53beba9311e2d1c90098ee8639fa1f963098df8971ecbc0def493. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6M2530671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c727cf25d88a5e88179b9d31950f851dc7ae59eadaa9421a0385336b9a3dd73. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2530672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad832388889ad398f13b90c05835e86cffa0e217b168f9c76c08fbb8c3d2cf7. 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/QZK6M2530673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7fc0978a3f060f762478577119eef6be8b4f0fa674ebc2e4fa81ba2ad2e54. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZK6M2530674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472a8f1a2b999dd0334a297a4883f041e4a7b630bf2c9e762a87db91cb4b3429. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2530675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9673b30744d46af00535245173fed33f9284419f9bb6b33fdfccc172fe3c0c13. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6M2556151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e342b6c5f622d57380bc191124b0495d909367f94d844bbdf1a81a81941018. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZK6M2556152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8d612a0603a4e3e24525d8797e09027fe37d0cad49c945a716548b8932840c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZK6M2556156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4026d65f184a6572806a2d29898a06b453daaff069262d04cb9ba5b793159d40. 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/QZK6M2556157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb161096b5e345ea079a3148dbeb343bb4f69511d06652f421861e9d2e1d22f1. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZK6M2556159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feee2e9a4df9c17d849c4f38261e348b74bf0e13633e6f4900430a30147d6e3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZK6L2551851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06f33a4f865571efdf41d3ee75f52880eac6cd4d952b892dffa4b8f1187bc21. 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/QZK6L2551854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b31a6cfcd6345b275bda31e4d61be2177fecf235e28179e5f294a48ceda6e8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6L2551855.