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 0x8dcc7f819d71c629f7b0cf90d98f5a6b6694dd487a55f847b18b1596bc129a8a. 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/06df3b76-ceeb-4329-ac7b-b953c075f755.json and https://artists.proofprofile.net/proofs/artist/06df3b76-ceeb-4329-ac7b-b953c075f755.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 0x4a5c3e946a78e2ecf18dbfeda7550f29dba02da49fb43f2933b123fcafcd98b2. 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/QZFYZ2085745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e90ad889c0c87126489bcd09eb7d06cdf79aab7e1f72def1f6343547107a251. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZFYZ2085746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b12e18d51649e1a924d11ac8c243209888462c18f495b2ac7e5c3f6d7e77b24. 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/QZFYZ2085747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebe81ce3a3258dd11f1c6359ea621ec9f49c20b03af1c2bb2c0acc3af5a8436. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2085749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1f7cb056af068641b1edb9beb3fa7cf7fee35541b9179db36b9bdea68d5a37. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZFYZ2085750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4f6a520cf55c633897de54d100ca3c8add348d7170924fe984954940fff9d4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFYZ2085753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79e3a9db5b3d88ff61dea6f41550faeb2e7ed288359ab5c00e7867335bf49a5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6L2024595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9854afda4641ca1c9b65a7c99d427809bba65cc4793a0cc5e4517aa7f08710c. 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/QZMEP2090535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd35098167d749ed9c2cd1f718641093f6db4db1e3df74c84a29f30dfd9d5d57. 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/QZFZ62122137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc501d8b10e3ab5013d9ef3461cb448b2248ddc995fe1af05f7d953225481db. 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/DEPI82021432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4000f61c6e772cf7ecba084a9e4c5c39a035f7161eed5cc6e3dd7ccd1e9defd8. 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/QZHN82137315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd098b857e16e7389c1211851885ea1fa83b453d3d5b228fea3ac7440e69f165b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:58Z), 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/QZK6H2110474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8181e2e6aee74b6b14fc7da0ec09b642333099457db68d43eeae9022601efe1. 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/QZRP42136035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79e3a9db5b3d88ff61dea6f41550faeb2e7ed288359ab5c00e7867335bf49a5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6L2024595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9854afda4641ca1c9b65a7c99d427809bba65cc4793a0cc5e4517aa7f08710c. 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/QZMEP2090535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201f487d9d0dd7c281351a15354bffce28376323e4e2912d05869459aead1196. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZRP42136036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d02eebaf14819ee5fce446a7fbfbb454261d19c3e00eed05a0f07295ac5f19. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:22Z), 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/QZTAT2166065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a92ff013b7f57bdbde696acc07b8fbf727fa67d95fb01887af077f1d17f73. 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/QZFZ22284393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c05e669164c11a61fbdfd66972fa0f9b6b0b44146793915f5401c8a6e456d49. 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/QZES62278986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320df5ec4256ad13f7fb33bbe3080aaad3a41207afc85679e33a0bfc6785e7b3. 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/DEPI82205089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde23b9ea80da4d7cebb325e4415e2e66481d996eec8622abc4b1f5644ebe04e2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ72324019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d70aae31568796681dbe86b177f95ce5ae98e4d3c8a42e0fb568d64952431a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN42323692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cbdaeb97cc8d1e8a51e03cb4f295155583b095644b8e8d1b5629d046af6427. 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/QZNWW2350530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da917ae4b1b9f85e434eb972294219a6250c8f4992a4234f8a14996d383f660. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ22465160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7f924f77781e3130332f03053286a2fe101412d7967dd36aa6c643502fd00f. 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/QZDA52427911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268db97ebdd7b7284841a66aabf1629b1d10540b0f94e04b34ae9276ba4a4c4d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHNB2461230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e3728728267ba3d5bc14712e694067f5ad26c8e02d51af02c7e080dba1510b. 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/QZWFP2461354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fb0570d5afd15a15aa12c176f044cae65a4c59259a96c78892c40e6d2c7e48. 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/QZWFV2445635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c180962188787da4a4d50268218af5a61e3a4b47171754fc8dd873fab4856c7. 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/QZZ7N2477764.