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 0x9c15e463a2be2e16dd4b0e444164acb8d681b6dfd74ce8cd53ec202d89339180. 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/385f4608-947f-4d2b-a282-e5491bf08058.json and https://artists.proofprofile.net/proofs/artist/385f4608-947f-4d2b-a282-e5491bf08058.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 0x30104ccdef6d78faede90219594e66e38e732a5ff1b37b29883cd93ff35d1f52. 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/QMFMF2202802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c7caaede528bdd10aef4b26c0dc3ba61d2da3f056f947bb0fda7f94ec28184. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBSMU5951764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbb159192b0a9397cb746a6948ecbe73d73b13d1d194e62aa32346dacd2ec12. 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/GBSMU5684085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830d5726eae35890a4b2645a35f6adcd3be5cd258fd473555f9c7e8f7843a3b. 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/GBSMU5572523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9db9f5201e122144fac80dea9a08598dd7ea7711242574ee2111b06e307070. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ321800036.
Dansant @ Amsterdam Dance Event - 2017 ADE Sampler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa34deb642b1750faa32b84d74828c243e840373be3f34bb05a4f33585eb4ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PL83A2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790a8336a6f3ee317095c373b45171d11171d9b5cfb45d652b443315adfc51b. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/FRX872399628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d69525284d62f15c957959a69cfa26fa7c85c64cf8dcb02bb0969a63dc77bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X41712818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd83502261acaae5a2893bba2df0b92876536396c3c9a861e63c0097de71e8a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX762355986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0761da4b7e28a5e1703bed6cbeda552fd0c3cb548da418c28e5d705650b31be9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRX872399629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252d8c81a8eb4f0bce653099fc937fa9f589c8f7f5dbd93d696a5ff175a4b952. 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/FRX872399630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f5b600f345cab4db6d0179df6b14be4822a67922cc9dc6194f266ba7447c2. 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/FRX872399631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f210ed9c408d9cee7b5650f4dd3a2ea4a6286c78ecd475cd1086973370f93d. 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/FRX762222202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae82c4a50aa8ca4a7098d2b2558e6b6f56932fbecc25991b10b7f679cfa01096. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN32094071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2ffd0c749aeb94afdf9cde2e5300cfd3a24b814e556a9c30a323024ba86a3a. 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/SEXJW2302501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c677d1c5f6dd839b67952d945767e9e87f6daf892859eb40b4a5142c8810ef. 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/ATEK02355062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1075d74383c00cd78a7f29e03b58a14d20a1946e0a5f7a8a4a470dea56261ddf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEPI82306696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051406aa116195ee51d900810ea9ce7d0ee28f64eceff8736bc8aeea6e37b1d. 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/DEH742219059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e7ce35ca22ec7c16a8556d82988f4a5abc7215e207f2dfb35fefc94f3f855e. 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/IL1022112285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8980200e0cf21f404a6b17918d676243a3916eb31a4982b82dfb71ef0eef4d40. 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/IL1022112275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd515a5c7f6a3289dd4bf05481b10b715a919d006a38ef6727e78a05762942c. 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/IL1022112168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061acb8adf6636f8edf661eb7827411e3e2d6dab398d8a572745eb18412bfca. 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/DEA621900842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29e2f0542922f7090b0b78a33bc6825a7a417619ba7c94ad20585f15c1435cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAR11500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8198877a93c0d2fe9f357c648172622d774a20c4cd5e7a97809df9547fdc2af3. 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/NLT2H1900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50edabb9a5514da5320d81f8252576977dcce63891eb197c8c293aefe176078f. 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/NLT2H1900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2886d83a087c1334cfab403e46caee5e70fe9ea2db6ce17bf789228ae98173. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLT2H1900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f2c626a83515a8bb5f94132ae5861fdc8134e51864af6be240812301ec2dc. 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/NLT2H1900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6fdf6a59b47afdefce8db599e9a55cd521ca377b7f3c2af67f1bddef100a9a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H1900177.