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 0xcd91448aeef1a4a2ba0d43c9c096ce294c3a60213d78f18f6df40597c523befa. 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/41c2f362-2aec-48db-b6d3-5ed306c9ea16.json and https://artists.proofprofile.net/proofs/artist/41c2f362-2aec-48db-b6d3-5ed306c9ea16.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 0xd536bfc26c7fe836e3e3bcba001d255357d76523c4921f1b35cad2343a9d4128. 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/TCAEC1953348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1e64ad036bd915e55e0ba28f4255364356700ddf829b4bf9905fa68153ad60. 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/TCAEC1953533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c53270c8fd6b4d33a02db7f67cee8cd042483a71c468cddd3ffa03bc56d64d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEE1958263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8143716f35dcaab97aeeef6691525de02e77dd6a085811377ab6b920bfb5008. 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/TCAEE1958275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ea9d3a395db3825526b53aee6a959d7bf963068e2b4ef6be58e2b6a22643fe. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:16Z), 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/TCAEE1958290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb622e82a8f6d56ded953b72a591a650423b23685a324182799c462a33ac331. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAEC1953481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e9764d848cf8ffa24fbe5f251dab846b4d700923098bae2844ea097e947fe8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEE1958393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319d0b1ca8c97b807f063437b1adb211802357cf65eaffecdbde4710d3b531d. 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/TCACZ1747418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fceb5a53ab85d5050a23c9b635c4a4c509592489f30f974181c0245e9953d55. 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/TCACZ1747428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c8b79d3f130d242e37368a96ed0117623cd602cbf64f3ca37addf55af5cf3. 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/TCACZ1747440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ad3893e0046581e006f1eeb3765cb49f3557631f8fb68a09e05001de7d66e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:46:28Z), 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/TCACZ1747540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d348fc5bce4f8dc8e21e72452514f8c2b9dd978378cc3e38a1b3b580dab74e. 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/TCACZ1747551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46c7931e5e94140d8efda3bdc4bc18200b26df32ede37129fed9a5d20998df6. 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/TCACZ1747563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32666712bb9fc93b9e66496b9fc530071417149d00333108852a5ac4e34aed36. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAEX2058089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce51a8d93fc04ef209af5cd9d1c7c6d0e8aa13353fd515c24d1208e851cab8f. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAFI2180965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ef0bf02e97b49c67bc126eaf93329ea2219396be1665c3fc9cefd1d94c784e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAFI2181022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c8c0632d19f4228b940c5271a3d77292f4c1bd698cca94f4cc7c5b54dc6e91. 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/TCAFI2184546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8016077171ac9ffd5ff36c392590175b40a936a4c97eea36c8f07cc605f8aa. 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/TCAFI2180981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382b3b7636cad57203d33310af7ea01cd0abde91cddf01dd859bc9df6b245ecc. 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/TCAFI2184536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72b475ba805ccfeec53df3c52356ede251a1c0d8c7f2d246cd126a49b3c58f9. 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/TCAEZ2020336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb6c476a90aa710345b1f5019c6107f6d060ea83db5e3ce4d3b9c591628ecfa. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWR2240243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3bac7777d24969adc84092832756b73795a650b257db330c42319acbb62085. 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/QZDA72374177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a513505ac326e3ec9cafa702c935c48e8f86f8536972813e51d302c1b1f8c2. 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/QZK6Q2372267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909c06915fd5ab9d5749c7ccaae042433612a338ff45b9f6d0e5937f389f4bd2. 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/TCAFI2184500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc34c2f13b57bf00ec1522466a0621d5b0f194aa62bd19eaeda12bc29d73e4b4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:43Z), 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/QZK6J2303890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26854cfadc0e5a2c6fcdda78281f908d00349aab7539d54b75778784aa8e6e99. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAW2364507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bc8f7e19d1c09c045a63f68eaa6d07456b04539296917cdbae4235388e1637. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTBB2382612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaffb4f2b45fb56bb1a35abca77de20cd5e0a41a93fafb8b1400ba7c1c40ab1. 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/QZHN62457240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f972ea658038dd4a4ae960addb41f356985263d08103c1e304789ba0fb2e14. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZMEM2475404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d02b4e5ff0c42dce3b498113b0c102b772d16d10c70499f30a07d1f56688790. 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/QZTAY2487900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fc8418a477f6e3d0fd725cfd392c7d31fd75b7c962e24ceb76000a420e9402. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:13Z), 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/QZWFF2436065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2197b759462c7518a8b21b3b042fbee1e711ab8bce3e2c5abba80d444d870574. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFF2405822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21083c67fc940af457ce96be50d0cf02b23e5968d381332f706d01f88eac004f. 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/QZWFH2422181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff60fdda5e29eea56fd3c29dbd8689ee9f4b44749bb955d4835ab923c58ba48. 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/QZDA82525466.