Christopher Theodore Ruben Studdard (born September 12, 1978) is an American singer and actor. He rose to fame as the winner of the second season of American Idol and received a Grammy Award nominatio
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 0x999a7785901c90b7a87fdf6632315eba6c760bf967eb3cf3e1bbc9ee66cec39b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ad08aa5-ca15-48a3-a820-7d27f14b1785.json and https://artists.proofprofile.net/proofs/artist/9ad08aa5-ca15-48a3-a820-7d27f14b1785.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 0x8cd6295293230d894c999cc8301beceb6e192a66ad46bc5976c135f7a5874be8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:36Z), 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/GBCTA0300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d4013e1d7d30cbc25c1ac1b5d7155451185cf085340827c197ecca191d0a6d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCTA0300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb554ad596045989d102d189111d1d3cd94eebc417e4bae6ec6c376530c98662. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:23:39Z), 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/GBCTA0300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d8471a9d44895d88166dfbb8e79f50f0bcbff520f1cbb53108f29e8ec5a722. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:30:22Z), 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/GBCTA0300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff778d713a8162efea7f54459f783a7c11cfe84ba5f59c447ebda55febfd0763. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:58Z), 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/GBCTA0300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3bb01afe008651d15b3ded06f85b1420a18b50415cde4e620f4ad74ab51603. 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/GBCTA0300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df04c6c084d409fa3de68faae3e07d5751565bd549e80d016f748015a6abd9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCTA0300331.
We Have Not Forgotten (feat. Fred Hammond)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33b88ffd21ff070a25566a9e4d2328089023bd98207f148a5c597db9d4fe89. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBCTA0300332.
Fix It, Jesus (feat. Harvey Watkins Jr.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01bf30eb84bb2b544e4c846cf4db3d1e13ee6ccfdf8382cd337dd1c63c57df. 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/GBCTA0400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2884397c7a6cb00931573fe9f38f0b289932b1e0f0faff1b74a0c34cc9ba7a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBCTA0400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052f3b902dd956937a6fc140e09fb46f2178167d37ce9c8a346448671c35a58e. 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/GBCTA0400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5de2c3b42828d9dc82629406520ac999d2f6488d9c746b571c0ab84b55f5e2. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GBCTA0400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33b88ffd21ff070a25566a9e4d2328089023bd98207f148a5c597db9d4fe89. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBCTA0300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b0b0e0d78e22493f87645106834696d5ce6f6198c4d0b4d13d64310c88c4b3. 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/GBCTA0400261.
Ain't No Need To Worry (feat. Mary Mary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d35e29ccf414175dfad3bf3a5d97c2a5b1bcf9caf2ddb6ed8ba4b1622b18010. 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/GBCTA0600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00aef51ced509fb0600b344340a221f35faf4a1ac837724aa5254fb8c7afba0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBCTA0600178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231306a90f1f291e6351c2263a1187a3ba25ed4741f04f849aeceb0ee56a6cb1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:36:33Z), 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/GBCTA0600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b0e626eb503abf83c0898c0b643ec873517081043967b183f8d70b00ed2e0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBCTA0600148.
Playlist: The Very Best Of Ruben Studdard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2749876305f85f5d7826cc557a7ab07620c2bbdb0fd0583ac7ece8465bcc72c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBCTA0600135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fce76a3a9e3fac23c601a76de8f57345cea439e9b76c41ef4163e6cf9b7426d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCTA0400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed82a4bc0e2401ccb7fcf3a17996e7a690ed84ed09f11c4fce9399821d205a9. 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/GBCTA0300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ff969a63eb4059ebf89cf411cb23bdab6f0b0485b57a264026b35182a4b1f2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7SF1252195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4816b40859501e7ef3a28a7ba48226dd46d6f3691dd3ad8d129c2e235ac07eb. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:51Z), 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/USUM71319985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4816b40859501e7ef3a28a7ba48226dd46d6f3691dd3ad8d129c2e235ac07eb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:49Z), 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/USUM71319985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e5785635569ba9b6ff6e2293a13176c3ceb20c035d3e39a4d8d3b0f3c3d61. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:37:30Z), 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/USUM71320019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3faa6f1c76fbdbc11f74c9ae4435566e6b80f2b95c5f6e7ca2e705f9b53041. 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/USUM71320022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d5e19a1badcf9c50910c17ae1cde1ee1a6af5c09e5bd1aefad2a999620edf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:27Z), 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/USUM71320020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa4ccaa208d4e95ab351ff585f26b5ba405ebe5b8c3bfdd0c5af2c85bc5d832. 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/USUM71320021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bdf1dead3ff5d17e8fb688b60ae65fa0c86880a4eff7345baa5aec4b9df531. 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/USUM71315014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442a62b0e4156382ae765e02c93f9505862dadcc8e8afabf500e70859e71c6bb. 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/USUM71320026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f95503780729eeee3819453c23be76663bfaa1d455c31beccc0d50d0583b54f. 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/USUM71320023.
Unconditional Love - Track By Track Commentary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bab1b89af405f706f145485af143a26b491723d95ec32cbf67e222a2cc215dd. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QMEU31721265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8b34fac679ec1d63d3f83e2706bc7d07801dfc8a417c1e28d4a6e903acaf7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMEU31721266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4858a953fd1858c5ce3c4d617e4bbe85c75fea3e9405b113021573c317b084a6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMEU31721272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe40dcfc1a39abc99b9329246085ddf6368f9f99ca3877964b9694bb9733712. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:12Z), 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/QMEU31721269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763297fb8a4c9bc398fb42c2d6eb3db0113eba27f88cd4cd8554256b0f84493e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMEU31721267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e4e4b6a33eda9ea3e09225098f175e5335f81c0a3ebb8efb96d87659da209. 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/QM43A2301115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023e90a0df1bbaf277035d2beb66d61887b729372b89a9378db44968b44570be. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZJ842403261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7d2c09ebaa95e7315ae690d3fdef3e496361377c76159ec9e1ebd9922c426f. 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/USKO11400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee302b0df5e85b987ab4bdcb50eaf4c5c736ef7d728ca76e6e732e3e8163bc6. 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/US7SF0952012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693de697a4974528d5bd5379ef01126698d52fc7cdd8a0ac5e2a2e2653d9d216. 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/US7SF0952006.
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 0xe21540572fa349b934a260f323cc6c898de1e6cbb11f938172ab80622d2086b1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBCTA0300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7e307cfce1fe772315546102a383069e48edf4f88071ff5ea194d4f32d4f8f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM9TF1200018.