Anbu may refer to: Anbu, Guangdong, a town in Guangdong, China Anbu, Iran, a town in Gilan Province, Iran Ambu (company), a Danish healthcare company Anbu (1953 film), a 1953 film starring Sivaji
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 0xd6dc555dcc9ddd290581247de60f05aebf5af6ccfe2bc7d5baa079c451166525. 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/2bd57c0b-7ea6-4d7e-b56f-53989c2c5ab5.json and https://artists.proofprofile.net/proofs/artist/2bd57c0b-7ea6-4d7e-b56f-53989c2c5ab5.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 0x1f45b1cb423861b38ae0ccec14e8f4b2f2fedf809a90aa1ece0c562ea9c33bb9. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QMPKX1637524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04c538a1935894011dfa20138facc6bd1e9fdfd78491d8ae96dc93daf64c7a3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM2PV1619247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdb1b569ab705a1c9ad1c6e3a8dc1855784eba1c3956b007f0701fbbbb9fa9b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM2PV1619254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82e6b9a934394bd3f8da8f4a9c199f7893dcb0034ba67b54d9f25a8da535dd9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM2PV1619255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc353d447caac3755d2a9941794aa92a0a63723bd17f87f0c11ca4caa6322786f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM2PV1619259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e85cb7e3cf03bda1a1c59229cb235f00755977e2673670f19cd0f87adbaf8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZ4JJ1654226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3ffa8f92b7c3ce34b21262753d541d9be16bcc9a33a7d62b9df9b2793be389. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZ4JJ1654227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192776dbb6848bcbde9104ae96f196c542fca48a704ebe85d7a94abc24a56689. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZ4JJ1654228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f03889fb7da92f57ed76bb7e5032184ce9e14c53327fe801f6cc80de9331f35. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ4JJ1654231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c3e94c2fdabe3993da022fb2d06a9edc64ba19f35e447501fd1d9e19a881c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZ4JJ1654234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b74d6b7324198ef3ccdece2f4d55de9b98b1aab14e3bb45ee0d4f74a71d7a70. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZ4JJ1654238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6fef0aed9081cefd01b6aab40a81867c7a33ae0ca84fa35751cd6bebbe7299. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLG661700227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cb8b6de5b1a8d24ff9aeb501b5032042acafcc1abe2c158c415b98ff9aa8f9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/UST8K1717419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b2890ea7b756745d1a8a3fd47b56a8ca51ac3894309c2a31c04b9e08a95196. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/UST8K1717421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee5f5157d6ccd258669103a4f7947da8b17b2cbc1fea234ce26b4d2ee38a3c3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/UST8K1717422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3873d4f2e65f2bff6cce6699d5df36fb8b6e38451b40c7fba18eb65635a32b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/UST8K1717423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b5eaa81e7f8359e1e77b07a8f620a33e36a8c198d461e06176f90ee6879f2d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UST8K1717426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235abfa5bee6fa36df5ee08aab7966ed7a023dcb2e4a7359c8305e81a079b6f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/UST8K1717427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe36b2dab4d1e241b1c930c47ad03f6327d67148c5fd054998c0801e33a5d52. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UST8K1717430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7a0f69d94ac7499cc0dbdda1916a3b28789a6af380c9b84a47d56db31636c7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UST8K1717433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b09e82be8f2481448ac09700469ceff1b598443e73ed74c5fe0a544866f89a9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZ9Y21782648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a11abac3f24d30ab052933d09d9e1c258df2950beb261384a4f166bf0408fe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAPG1861495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3275387280fcd82ca78eb129f2ef7d1d4d338e5034e9e573987b88e6d7bd7dac. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZBRF1813476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65abb3cdda2cad0d712708f084a3f965b63cb4a1683dc7a3d4d8396cbfd4c44a. 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/QZBRF1813478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10616612b08e454bf803105e750d03176fcc5c3e77d1abf968933326b8b284e. 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/QZBRF1813479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9400985a5ecc93a7619b39f75140483989d9e366791a3a2af5823d7efba193. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZBRF1813480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9f87e671fc828e521d2efeac072926f6bc7dab3947239f6b8138b4dc45557d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZBRF1813482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c594eeee9a6089d364047096ce4e4ca2b7a2f06375a34701a1bb9b0ebeb1eb. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZBRF1813483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a71c5b74fbaabeaff19d249f113a33820fd210f8f1fad44de787efa09526ba. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZBRF1813484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f16832815d20456429a861d5f96619192ed97e327d9b12534a44d62c88ae33. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZBRF1813486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66701b71134720b1e3ef1935e1d6b245dd720ef3eab7ec70226f177947dc1250. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZBRF1813490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10da606cad01cbd945fbb51b2dbadf2125125671f6ff72988e7f9b556342c43. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P1941854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51770e43de7438f525a4da081451416bd58072a88b4e2d92bbf4e45acd913b2a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6P1966442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62e9d7ea3c573ef959f82345993685fee8239945514bcff0216d9d7d70c6c26. 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/QZK6P1966443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b33dfb3fbf68471b7cfdbe928926c2430b7b16614b8e2f0483daf1916cfb2d6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6P1966444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c92a4b5f5a356fa058d996e46e912b3b6b19e9e44223efb978594103e8d5d16. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZK6P1966445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85a53b4c1e1d39af9c69a08677a96ec466364ac096237bcdb2753fe3276846a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6P1966448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d706160dbf89ee436a64b6b0b44ceddf20f544f8ce2ff77de78bf9a587887a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6P1966454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf320688dc8704157ad39a8e51f7dc68c02c22fc01113946e54eaad177d07d834. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ42060008.