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 0x28f2c1e0ea9284876da322fe2f1b051b2d66e7d7640b7c04cdd2dacca881b774. 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/728b81ac-fce1-4575-8e88-a20d6cd81022.json and https://artists.proofprofile.net/proofs/artist/728b81ac-fce1-4575-8e88-a20d6cd81022.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 0xa809fb396224a5e65c122d1ee64c0ba3a7b350bfcb9f97fd32d371d47c7c147a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6V81527924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09c0817f81e5d08a2da7bed48b5316b3a223b872f66a84372369b3ec44db6eb. 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/FR6V81531022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e51eaee124853b1e7712379ac317c32442e1ba927241fbab0c0fc66b53c133a. 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/FR6V81531025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4d6c4fa303961a44cc5dce4c740d1e1ccefe99449fe119e9ab6d1e8ef3fac0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:42:24Z), 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/FR6V81531026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbe10b096754cbd10ec10f934233d5e4546680f8aaa202b49389728452fa2a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR6V81530953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950057222629dbdaf8d85c6bda6d9b5e37b2e82c8613d1dd38788cd738ac9b5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR6V81530959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c4cac7efb53535b3b6b2e3bf2a66bbabc149019fca1a7c497bff35e43bbe9. 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/FR6V81527842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37461fc7f0103053386dff552aab241b37e06ff4d27cabf55821d3a4069b947b. 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/FR6V81527848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb6af18637a9446cbf23880d854f02508f28d3a02c513e531cf076d5c3b060. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR6V81558662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd24eb16eb4cc44e4cc3720b8c951bd55deb4824970d42c6ef4d45fda7a6aab. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR6V81558666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48742f34dd8c37b476546c41a93897bdf2c031446fcb94afb98898ae66750b78. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V81558668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcf2f54a214ae8ffdd6974a3902f62d49c30580ae7e3ea05697e38a38d428ec. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:28:57Z), 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/FR6V81527843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb6af18637a9446cbf23880d854f02508f28d3a02c513e531cf076d5c3b060. 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/FR6V81558662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579cbe79fb49a5f7b31b1f385c9e8138b3b783a0ca81fc9a233a730dd2b621b2. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:35:57Z), 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/FR6V81527841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09c0817f81e5d08a2da7bed48b5316b3a223b872f66a84372369b3ec44db6eb. 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/FR6V81531022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566d2b31a65cf0083e5927b547e201e0478dd6364daf0418dd18b74461da4b18. 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/FR6V81558659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfd0d4693096963252ab2041c11533be37049d669db1c7cd22751f2b2422ba7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR6V81558660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236e2da9a8252e51d752382af7692ff1aebe68a4a7d553032b6f0dfb6e81ab68. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:18Z), 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/FR6V81901182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b9168e85bf6e726434bbc5ebe7056d91f9b2e397840fc9669c96b952c4e3b3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR6V81530990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae5627e3fc9646d4df04b4775e8cf17feef5603536efbb6e4dd327c96434e6e. 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/FR6V81562416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2439ce6510fa863bcee4a11726e1b68e1b3465e42eef4962e9c823fe9c32bcca. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR6V82053459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4568dfc23549c9c1f2d557fb12a98b775249003e47d31800c0641c22df4e0bf7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR6V81558661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863374584a350c484c7bababe17c975acb4298005dbe8e8489eb33c6cb4fc88c. 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/FR6V81527847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d40839e5884ac47df74be86414e60db48b965eb650316482dd7a905acc60d9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR6V81558664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf0640e6c0178e68c1b96a57cbc73da31bd2eb608962c8c9ed6f3dfedb94e8f. 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/FR6V82053463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cea63023a8de583027e973fb5efa2fd8dc65f90f5dd38c55cd2f680a11a0157. 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/FR6V81527844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1942ee2435a0296b689d7023ad87a1e21af50fae7fbbb530d4533160b01630. 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/FR6V81531023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52339863fbb1c887ce39c3337f02c99b48ecbf06e49aee2fb2997d3b44bbec06. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:48:14Z), 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/FR6V81532601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c4cac7efb53535b3b6b2e3bf2a66bbabc149019fca1a7c497bff35e43bbe9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:35:21Z), 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/FR6V81527842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797f9f9aa3cef0b9a682de37efe8482cff354d51560dc9b0e7faf576e0455870. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/RUB731434526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a377ec8281b79b3bc4a63c2b5350a8fe4b74b07f22b21638e9d82a2e2aef79. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUB731421095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d827f9e7cb22c35efd45138e0c69b199c8cf29a2b0810a471c41600b6f88bb4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUB731434528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb02b35b8dcde36c6a4c36e9a9f87a3edfe37ff2803ee0224c51c14dab8a9548. 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/RUB731406537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b59a85aa1752b9f08fcf40155d09b8718a48b20444d52ce299e05e2b5752870. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUB731512398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104ff41b8892bdca60b9b5538b19c0bfec48cfdffc25c4f6f4f38a60d0a8451a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/RUB731516523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b45606eb99471042875d146e3e48609e5a83cbf4e2db66cf9e34b0d106959cf. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/RUB731520753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143548e9f19eefa8fbe7bf6edfd929d70bddc9f3e4386ce118a9bb4dc36af471. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/RUB731573066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a77bd7efbafbc393ed8c0059d9731de55c51dd50a51c05c09c650581ea06a74. 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/DGA0L2457327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01c093e4d156a601f08c70c4ed672b8d05e0b117e18de3207aebdc3a4307873. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/RUB731566403.