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 0xcd9426dfebf8ad8bb11f1fb791ad0a3ced9a0de4f369befa6b164b44fad3d6a2. 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/c64a2e14-3520-47c6-bc46-5c8e50fda81d.json and https://artists.proofprofile.net/proofs/artist/c64a2e14-3520-47c6-bc46-5c8e50fda81d.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 0xb0b7cb0addb10422303d1d2a474c5830010cd3ae8f6e8a09480c33f112d64b2d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:39:25Z), 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/VNR011056908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2de1e6a8fc4d8915d305f0742e2d19b12e3db35d133d3cfba3e015b146bf92c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/VNR011056911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb33d1441926d3e6927032f79f226f15066f3f723b0e0cf9b1358c54ffacf94. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:28:09Z), 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/VNR011056912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe36d9cbfbc78928f36e054df44b05f5cfd0b736eb8f20bf99364676c2cb6e6b. 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/VNR011056913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe493f7f96b08052c3608cc80d92ff3f6663c74c5566f3da5b2b23966b0b5304b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/VNR011056914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08edf89c300fe6e80cbd7ac17ba06ecb4d6dd50bf38cb393c63011ed74dcc86. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/VNR011056979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2660ff1da7eb0a038b808d8d5cc02f3fc678d0613911a55fe8e289e3a3be510e. 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/VNR011056928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f4467bf4aba00a5335f9f3fc0291fe815c816cae9fc9517c3365dd68531d0f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:23Z), 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/VNR011056929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14892db02117ae149566f2a57436788271235c8936367762eb900000dd7407b6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/VNR011056889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb36101abc4b2ab3108f5c81a7afcec77fc60af522565e717141042e0a1a3937. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:37:44Z), 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/VNR011056891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4b3195aa3472ec26f7d466d09ad9d61fdacd81015010ff77ae49dfa009c10b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/VNR011056898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb974c3d38fd1690d1b9c410c9aa2d196f305068b93956a7f46f2484403810. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:50:38Z), 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/VNR011056899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef3ca01d78863011217c936e7401d5c7ff87294dbfe83a3e80552768ab5950e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:29:52Z), 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/VNR011056934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c81773e63e612b75d155c6fd63c687cf9237c26f5156e20dca6dadcbaff042. 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/VNR011056937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed72cd2ffae0cf6153e917a70df6b7acdc460a0908545ba56e6c5ec77596473. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:31:32Z), 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/VNR011056939.
Mẹ Ơi Tại Sao - Tập 2 - Tại Sao Biển Lại Mặn
Mẹ Ơi Tại Sao - Tập 5 - Tại Sao Trên Trời Có Cầu Vồng
Mẹ Ơi Tại Sao - Tập 12 - Tại Sao Không Nên Đứng Dưới Gốc Cây Khi Sấm Sét
Mầm Chồi Lá Dance Tập 9 - Bingo Dog Song
Mẹ Ơi Tại Sao - Tập 8 - Tại Sao Bầu Trời Có Màu Xanh
Mẹ Ơi Tại Sao - Tập 14 - Tại Sao Hoa Có Mùi Thơm
Mẹ Ơi Tại Sao - Tập 11 - Tại Sao Chim Có Thể Bay Cao
Mẹ Ơi Tại Sao - Tập 6 - Tại Sao Mặt Trăng Khi Tròn Khi Khuyết
Mẹ Ơi Tại Sao - Tập 3 - Những Cơn Mưa Đến Từ Đâu
Mẹ Ơi Tại Sao - Tập 9 - Cá Có Ngủ Hay Không
Mẹ Ơi Tại Sao - Tập 7 - Trên Trời Có Bao Nhiêu Ngôi Sao
Mẹ Ơi Tại Sao - Tập 10 - Tại Sao Lá Cây Màu Xanh
Mầm Chồi Lá Dance Tập 1 - Rain Rain Go Away
Mẹ Ơi Tại Sao - Tập 1 - Tại Sao Trời Tối Vào Ban Đêm
Mẹ Ơi Tại Sao - Tập 13 - Tại Sao Không Nên Tưới Cây Giữa Trưa
Itsy Bitsy Teenie Weenie Yellow Polka Dot Bikini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba8a835dedf4304c92f66036e4c76a9361fb4b473d52eaf38fac9c7f722dc97. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/VNR011131781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a993d71c7dbc2f169e18cde1902f2aef02c9dbdd4d59f1957e14410eea7c51. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/VNR011131764.