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 0x5ad80f0fa1aa025e1c6e0a8aa3561129ddb2398abaf9d75c202cdc89f468f701. 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/3b86f5e6-86db-4cfc-b719-748492b88a7f.json and https://artists.proofprofile.net/proofs/artist/3b86f5e6-86db-4cfc-b719-748492b88a7f.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 0x46b55117ef59684f1a57deba29a6aa4f6362f37dafbcd9d4982c294aade35be5. 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/FRX202122874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60213abbfdede5ba5c1bcc70980aefeb22f086ec3e546e170aac00513380aa4f. 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/FRX282124512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc87f0ca88590796a740a9dc6e31e3890aff2089444dda0dce77e12aa348fb8. 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/FR2X42291956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af79f7c630da80b6622365efd778afd31fa0e1c40ecbe53fd3a9143bf9504d9. 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/GBRKQ2236463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb147d4c26379758c2af76efab6e03db6bf1c7ecfaaf2f1318aa7e97273476962. 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/GBRKQ2296380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf844765618a434034e8480097400f6513bec0fa340a43acef48c30d420f13634. 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/GBWUL2208203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf668236d34761894230fa6a04bf3e7e3d4e72abc13435f9c063356a19da67c32. 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/QZWDD2209435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1f409b73f7b55c644a83f46c0f75933f53f6047c592bbeaadbeeb0deaced5. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZWDD2271885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e22c3a6d73398e2cb23c8893b1d46651e4bffc15aa88e4cf59dbc80fcd69f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2313830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc09d9184e3500db4ade6b814040420c9daa3f22f6e01240b359c2173e03bd4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWV32441638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4095427534c63623505f30fc30a6047b0c3603391aaf595a9d6ffe4d086c91a4. 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/DEVY82400438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe03fc9f587a5f5dbfa23fba5614876d329d02a1681dddaae230b4c70559165. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVY82400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573693dd49e3726c548571ecaff20b4a857d8f30a0bc7a9a9e9443fc0e5eed7e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEVY82500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3baeb4256252a6f38e06abea2128c7162ebb3d85ad563f86c6189fdc4a925d1. 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/DEVY82500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7883fbd3f19c9918c43c9bf7749d9d7377024fe55ec090457600d4bca645c9f7. 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/DEVY82500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ca5a61b5f487285a33e3e2fde8985a40240b7bbdbb41ae99754a6bb1d4e04. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/DEVY82500224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573693dd49e3726c548571ecaff20b4a857d8f30a0bc7a9a9e9443fc0e5eed7e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEVY82500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf697abe60c53c5c260f4c51820ccb6c4a14f0f3d1e77624173c7490bc9fcf466. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/DEVY82500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc0b804fca815513a83d4ecc5828c8c764de5f25bf0d6a2afcad1b37686cde6. 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/DEVY82500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb11474228308d0203012089a5753ace8f1abf92a950b98b7f0dae22fbb0d7f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEVY82500229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe669968aa93095c4febb724cdac2357acff574f3ac0f9f1dc91a39a6d3623ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLM2497580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bdfc397a9a9ee58eb1e08646680618a32728453333744bfb7d01c3165479d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVY82400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e7b6855b9da2070d233b3d6c5c9af1d288c4fff4d0291572e9057ccffefc17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVY82400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee70b01e18fb47ff064dc9b73c06cbfada27eab481945d45133def87930b81a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEVY82400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc87f0ca88590796a740a9dc6e31e3890aff2089444dda0dce77e12aa348fb8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR2X42291956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbfd8be384fa6fc30aa9f50c33c2aa60984b18f2156498db336f862abb0738a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEVY82400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf844765618a434034e8480097400f6513bec0fa340a43acef48c30d420f13634. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBWUL2208203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af79f7c630da80b6622365efd778afd31fa0e1c40ecbe53fd3a9143bf9504d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBRKQ2236463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1099b01a997948b1492e34e14f4a7aea24ed5a0467ec878d83e2b7411694d74. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEVY82400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8b57cf2a457a26bb42e6b58658d3541f656e742046b15a0cfb1609d54bf9c7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEVY82400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1569bddf4f318f42415eec4a5b1a100afda338b8a25eb6620728e4a9231085e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVY82400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e22c3a6d73398e2cb23c8893b1d46651e4bffc15aa88e4cf59dbc80fcd69f3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZWDD2313830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907235dcde36995c04d1501c29eeb8806a53880688dd7387561fdbc333781d4a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEVY82200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cedb0936d66d040a8d1f2f01ed5e91d437b603646206edeb7683565ef3f1f5. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FRX872132908.