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 0x24185d72958d719c7861d336e896c0604809e251e5f4926414a387041b100f78. 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/211877d9-46d7-4696-a2b6-1a00259d1a65.json and https://artists.proofprofile.net/proofs/artist/211877d9-46d7-4696-a2b6-1a00259d1a65.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 0x4cca80b819ef8f3231936dd8638620004814ab7e854bc02193b113a806861d2a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USDY42446689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0c0a2c36e7ca211edd3f6e865821866014e4782cdc5574cb2d672ce1c2e548. 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/USDY42446691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd9e7483689bb807929bbcdc99e43d8da8b5ffde0676ca0a3137c3e7e7009a9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USDY42446695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483fd9e9636ea157e30d6d78eedb07d597b6e0ba1bbf2d9f2f6a0af648e7f71. 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/USX9P2449685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe168041eb397cc4e95457738536f7e29284f5946ba2305c0e63cf4fe68178ea8. 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/USX9P2458463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94eb0e80439dfcabee7c3ec2c1f4c0265ea66bb77fa6944277ab1e6416d5a2c9. 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/USX9P2458464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d722e0d881b62fa24c818c58e1d28d2b84ff61dd373d0bcbc5778a70ef14d0. 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/USX9P2458465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275910398f8e37561659780bffa58a0a343877e4a14a109884bff484f6d00825. 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/USX9P2458468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe24b302eca57b637f9c67cc72ac70f3706ae56c71c878ab301411ec281249a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USX9P2458470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b5dd9fae727dcac2913fb538518c15722fc41cfc119a1ff3c5310a373eba56. 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/USY242470827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5010eedb68aba5c9b7e337c42c87149ce85dedcf3eddb235f9a822b3c7f8fb. 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/USY242470826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414d130f569d18766c5bdc0ecf0b58355d484e13b15b759305074ce0b95655ad. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USY242470829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9064fc4c70bb618e609e1691850fa2330734506f86a8a2e5a86a060523d1d101. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USY242470828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851019d85404c4543c7e0143c3885401c5592b2803de0a49cae0b51b753398cd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:20Z), 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/USY242457614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4c76f2b6fc2bac7a6b4a878db08eb2b965eabad43b8b0ee369f3b7735784c4. 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/USY242457615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d02bc7df848e0d8fca2f0852d72fe3049fcffa54a2a25eef9a49a4489e7f41. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:45:42Z), 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/USY242457616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7bbbd8d52fa4ede7f317d1d1f2862299c987ac7de5f21664ed7bceb1c7b040. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USY242475034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0916e2df497c2c2670e211e46dd1e54eeef5fa7683aa53afc04e5edc1048070. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USY242475033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee08dee189179508e0a90bcd3aea4f098e6768570ad42aabc7b27be0d3a81d. 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/USY242475036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2112fa1b1cc6f4af8b9e563944cb17ac7fbb50606f78358f2bdd08e681fd9a6f. 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/USY242475037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f843505c1c11edfa93f67e393e201ca5dfe845b6c7b08beee66b967756f4e8. 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/USY242475038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7053f21171107554af04352fabf60c8f4c14c4147a7c91adeeccb0dc9376f46. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USY242475039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed35a6d0f08d6c003601e6a9eea855a8442d0ed9da1df894099016524ed7b123. 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/USY242475032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249c3d819dab912051391aff3a1a3b10b2d9fe664625bf3df2746bbc4e7b47cb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:29Z), 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/USCGH2582983.