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 0x4e5d614ee7df916f49a2a4be8105ca31331f23d9bd22e0f7b50e67ae5f08b8d3. 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/01c61d16-709c-48ea-923e-72fb38f4a4e7.json and https://artists.proofprofile.net/proofs/artist/01c61d16-709c-48ea-923e-72fb38f4a4e7.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 0x1b679ba8641d7094dd6a2afdab08a73fb9fadad5aa9b44d786116eb6b0c810eb. 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/QZNWZ2367267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a92a56d14e1437c7c2f4f09d5e3fa16431a7f557ee103486cfbf269a2baae5. 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/QZRP52337315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf675b5c92e3ff0173a7e2801383992c40f41dd95c8153371e52b124416a1f472. 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/QZRP52337316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cfb50c40aef5e1bfeeac2a19b757bddb0b971738887a18fb0851a54a0c93bf. 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/QZRP52337317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b679ba8641d7094dd6a2afdab08a73fb9fadad5aa9b44d786116eb6b0c810eb. 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/QZNWZ2367267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2783b1e2eba5a191383f753f639367248422ccf6857941e744a8edc6ef562f5e. 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/QZTAX2392981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02c028dc94cf462c451730794b497ec36c68ddd2ae7aaf830dbefd80284a917. 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/QZTAX2337526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8892f4c4193bf5117d89ca198d43c0e37318a111b3d8f459a6c0aa1af32bdc93. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/QZTAX2392984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc488ce89fb29c547191d3743b58962edfcf67406feddf478b520e357bece20c9. 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/QZNWY2274554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70491339136b9960ef1481bcb887ec3f1a64a632b217b2a382741e730efa3188. 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/QZNWY2274557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6140a3bb570ad20a43ca9b3fc8355c3ce5ec35cf69b7608826b9a29225826af9. 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/FR9W12362958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a451f070f1e1c5e64bd720da357424daef7e57f286127b1465e9811723709. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:20Z), 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/QZNWU2409447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b30d9a2a506a7094414992258e26b31bcdb2ba506bc4d7d5c41432f06d797f. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZZ7W2413506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af2da2964d23620e4b0e201a8c20c30d2a5f646d5d0c5ba28e117d2838205c. 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/QZZ7W2415562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3384f24e001ffa2733862087908661243ebebb5b5604f45272c10394318fc. 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/QZZ7W2477450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045e6402ee431f995babd365d073eea06caaf75650eff4085937b12bc93dffc. 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/QZZ7W2477451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3384f24e001ffa2733862087908661243ebebb5b5604f45272c10394318fc. 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/QZZ7W2477450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045e6402ee431f995babd365d073eea06caaf75650eff4085937b12bc93dffc. 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/QZZ7W2477451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccdea55fb3e0d1384f8919fa1b2cc6a1b50a0ff384a9da822d35c3e375a24f0. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTAT2407715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b679ba8641d7094dd6a2afdab08a73fb9fadad5aa9b44d786116eb6b0c810eb. 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/QZNWZ2367267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41fd787b9c0e490349a6637500e09ae089e7e95f7d82cbda0e09689e4e0fede. 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/QZD5H2000535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ecad317d4c5e4a622707393f2c2574794e138adae490f74cfaac33f9bc17d9. 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/FR5R02400025.