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 0x1afdc5a43c9a19a040c1c790dcd26ec99cd7937fd4964c407fb39e5cc5ebbfc1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdfbcdb6-7e26-43bb-ab66-2fce5977dd7a.json and https://artists.proofprofile.net/proofs/artist/cdfbcdb6-7e26-43bb-ab66-2fce5977dd7a.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 0x1c298a6eef33d5d731ce4b8be165634319fb68933733a9b25d3b5447e5c1726e. 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/QZTAU2471841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3847892190e8b2fc7f899d6f500829befc598ee767d12e4332c4576c8466e6e9. 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/QZTAX2489287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41f36c6bfbf10345a83f49661d9e1bc731f588a2b7621c22d47ca2031c92ba3. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZTB22417650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dbffaf9f8ebb4bdcf53e532e1ce1be0aefb027a7b04caacaa8b879c5cd03ea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB82468680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25767d16ec238ab434107110be5120acf86c3f71c7e0d9e81db0a22a8c737de4. 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/QZWFJ2487622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88df5fb17c4878696454c296ccb03b3afd885ca204734fb9b9e719cf9198ece. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFJ2498331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe383401aa2cf6390ba03d48689694cfb64433b324b81a10e74a468d452a175f5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFK2420610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0036c8c4b645e4621b153c70d553a2a97109970589cb2450790c09d38a2ca33a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:21Z), 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/QZWFE2453228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf594c1f4dcf9de240ee4541f68de6972f175efd54129609694942ce06f9a8752. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:17:03Z), 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/QZTBA2418995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e91d3d2a6006009327a9e3049e8d89ae7abbc7352c2578808e8b3f6586e2a1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:28Z), 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/QZTB62483642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e05750b85d0c1d9d9ef160cfb4a48d389f9bbd5439287d58871b588ca6259d. 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/QZWFJ2498334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93d55012e7d635049c46ae55a70e1acd3124a8db4caf09447499bc3221e8cd5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFJ2498335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25767d16ec238ab434107110be5120acf86c3f71c7e0d9e81db0a22a8c737de4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFJ2487622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f63ac794c7154a1fb7ff8ceb1b4c824214cd896b19c10a9dc25fa14ccd5bf8c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZWFM2478538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63841ceddbc28a9638e501a3a805c488fefd6c6b748ac077bf84f1e44a147db. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFP2437560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff6b3badc35827a0c3260b35a6f33fe9ec7366e7692a526c2294fccee3a71dc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZZ772432449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cbb198fc48090918ebbeb7f1881f5f886cdd9485cffa785e47d3af8be2bfad. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:30Z), 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/QZZ7X2406932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f448f02e93530f712136e566b1404070c42206017a558c1963d3ce9f10d2e13. 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/QZK6M2514697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409449a27868cbadaebec0d14ee47855e7f2540cdfd2c36f8198cb7d7e47654d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:19Z), 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/QZK6F2545454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5102452ad148c9e6d861839326b3e9bca3a6252191af2d511938a3ea521e8d2. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:10:32Z), 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/QZMEN2579838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92feb0b91e6a1b91c473339470192e281368ce373c297184992390e4a037879a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWS2541552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2abe700e4e6ad07882c1a07d4e325a03918ab0ed73fb573c4199a83c0b7ada6. 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/QZRP52533611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92feb0b91e6a1b91c473339470192e281368ce373c297184992390e4a037879a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZNWS2541552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d17faba4d639763a829281227ad39cef87a1f303fe8e372ca6d209ccb45be0. 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/QZTAU2534969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3778d7e6c4ac39a6e379cd5dee9d910e18fccb927bf67d1c08f8e69ddb82cf. 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/QZHN42571502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1530f0d3b8b79c5638f91fa90cf54a20f80e0245f334c208702e527cf808574. 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/QZHN82567615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852086347c90fed25ee0a494c1691e7441303f4e71f3357c09f23986a6de62e0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:23:22Z), 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/QZRP52533612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d7272de4411c373cdd5812c7d3c6136b024a6ea6eee7b3a721ff96004971cc. 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/QZDA72542100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b753273e00c7b9014ffd5983744df1223dae44492038681c9d54958d5304856. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:05:00Z), 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/QZRP52533613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7df9045026603aa2350257767f61f0b7aa52e2d9dabe2fe97db73c2ca3242e2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:28Z), 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/QZNWZ2502242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebdf19aca9b5855fd1dd24d2a7db589ad9e98f9cf56de0b025a7ac5acc84914. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/QZRP52533614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d5415da44244f612283ab101885134242116688e6aa5c153aeb42231b7fa8b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTB22539844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b48416e2016fc2ec3d7f78342897a874483fc863831e22aec18d33ae4af58c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTB42575293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e8c864aa38974c2ec97fa45bd493203ca16158b3567dc6483d4fe4d5894598. 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/QZTB72541038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb163a622cdae47b3b644ba1a7a9d256c4f390ad127b476704de59b3079a5af86. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:17:27Z), 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/QZZ7M2518248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa065675056457d141c55d38697ec3c213e057906efda6be0efefe347d6725a45. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:03Z), 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/QT3F82542255.