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 0x87f60cfe0c85a79ff04ed3715f7a04f5402aa3073b5fde3e0ae6ab8fdf9501a7. 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/59f41696-6f26-4b0a-8397-5eeb5783fc50.json and https://artists.proofprofile.net/proofs/artist/59f41696-6f26-4b0a-8397-5eeb5783fc50.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 0xe719d47e0b3c6cc8aa88e6ad6ea2443e849e534cf8cb159830ea109faef41928. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIQ2478868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0970e4c6652307f061306e836f6a417d1e2d9ae163a947c8c170444c0cb99e48. 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/TCAIQ2478869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506de78a1bce913395576a07f7f6b39c79d851c2e43a7435419ebd05d0cdaacb. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAIR2478874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e87ef5d3e6b938ab090b58f673716e2d7f7662e623f5f1fa7a3612fe8a6780. 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/TCAIQ2478883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496899e801f229d10db77445473f540c386a4742c0c3885a3bd14bb7c38d3b2a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIQ2478885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4234bf2b63551359831fec465b55ef18001b66faede932fa7616903a5a7dd5e8. 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/TCAIR2478888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff61f1032d9088b0faefa1d3b21ffd107881a1fe2fc140b19484796276201fd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:36Z), 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/TCAIR2478890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc556cd92d68185fbefda83ed2727ab8888c0168db4ffcd927a7265b3401f9405. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIR2478891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09b06dd11899ee08ecdef8497bfc37d298cb67ba1f1435e838858e9ffbbe7d1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJD2400700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861d62f17b5846d6e3876b1e311470089fab5b1c96dedb1a2e6e6f0787c061bd. 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/TCAJD2400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8ba23c049c4572a8ac467903b6c4956676256d0cd11b02ecef0d3348eddc86. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJD2400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bcaeb02bd78a4d5f79922aa668e50afb12e8164736bf0361987769f0d0a923. 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/TCAJD2400720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54c091bd55b77b6c7a4f440cee619d20b2532fa1d67b97164d5bf0a95e1ff73. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAJE2400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622c696f9ede077cdb49613195648593672cf5804b313fb4ca127dad3126b34. 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/TCAJE2400725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3020ce747728a7020bfab0f4c3a61092b3bdd758918c77a0cbedc79290157538. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJD2400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7a8e1bf78f827e5a6d65de101adcd663f6eb8f2019a41bf22d03cc5b18df1c. 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/TCAJD2400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54920f00339f58df0f2bc8c8c11e7a37db986f042fd042b42ad86843d4b9bafb. 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/TCAJD2433130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68372eaec21d58451385d5b2d2429e511c931d4a672d48256af4c063bf6bd186. 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/TCAJD2433140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0307a013dc722ae955bc8759e1793ed631f4eb4703c5e80be56ca36f85781d. 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/TCAJE2433147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96c849d65d91484c5049541b876687680af2e82532c436185026eb9af767cfd. 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/TCAJD2433154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da08ee27c4214cb2b458371cd14322c553bcf68aae7fb6d51560cb9177fe6f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAJD2433160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5397ac2e79abbb1a99e7597855cc7c97b60a5d8d4bf3900dd0e807ad345c2fa6. 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/TCAJD2433163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddc70cf48fd927612c431bb54c26f571310431236ce15e4113f9068c731721d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJE2433168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1332133736bd7f690480174f868d61e103fb803d6fbb5c9465ffaa2daae3026a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAJD2433177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdf68efbb135beee4d769bd5edad0463cba7b754eb87b56c75664c9c8bb9022. 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/TCAJG2531980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f80fd72495406ce811ffa237624882671624c1f613bbbec3e8a113d5a219e99. 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/TCAJG2531984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1147110de9e37b532e3fd07e33f427d144efceb2a5478fa53139193b1a596760. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJG2531986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8bc8d1797224ac3ad4c2904a48ef273fcfbaa551f82fed43afa22b39bd0bd2. 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/TCAJG2531988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c8f8440e7d7b6c3c7b67ee18281856043b59c7ca43ecee7b2f735ad477bf2. 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/TCAJG2531991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce505c18197b2bbced9fe8dc4a190be32da09f00a33877654218c552247ef1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAJG2531994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2c7ce5e48e12098eb982aa4b183ced04f6de1ae54cd7a09cddea4ddd5d4c0d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJG2531997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8836186212387a3c67e1441782168f932da99640aa8cae880f79ee7878684ef5. 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/TCAJG2532000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec71a02b3c752a00fc375c1ac34d28bd16be3cacab59bee178fd4469a39c767. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAJK2513773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef6ffd667321a7932107f320985407087cc9199ab1ee5ec3fff6e16bd2d1587. 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/TCAJK2513775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff59fe45bc096db52c1843aa499e1e863c3c52f7370632c1c063e89a12a6f4c. 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/TCAJL2513777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787247cdb8d6aa11601149d9c7a003b0fea8f7c766de38d560eb88891cb7ebe4. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCAJK2513783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16949d8c7aed472905548bc2fdca385692a54ef3890f79f6888e1fa159528007. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJK2513785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a8c4068f8d8fc586c305d9b01318c276bc90b79ca6ac58b9119c7fa1468e8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJK2513790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aebaaa30f207a30ec2b29d8025f623992a42df18297fc09b314fca31b9894cb. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:35Z), 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/TCAJK2513796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13581e7d24743a503f77aa3ce0e875452b04a6e371dcc894f8505b66e754ab82. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJK2513797.