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 0xed98467f72c0988144a6d1f48a6460eaabfddfd1bec7980bf4c8c35069a0ef74. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cb64012-c6ae-49cb-a12a-78115b52bf0f.json and https://artists.proofprofile.net/proofs/artist/0cb64012-c6ae-49cb-a12a-78115b52bf0f.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 0x9cd4a5cb26abae620f7e85c702e246f81e684f0e8034056aa87d2fa80f0a3c19. 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/TCAFS2120060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947418f7053b8b0ae787fa4728dc7474c93018da5ee0ab9baab3bdc1e8eebd4b. 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/TCAFS2120069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114b944dc6112bf2a9a4ace252ca3042ae5199122f1f682dfbb836cfd85ee96d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCAFS2120074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb43c343a3bc61b7497f33212657bc2860ce96fd4e4c7ace7b3c0c387372fa7. 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/US6QR2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13346dcbd97dce5e15970269287445e300c5bbd1781b9b2a3106ea6219c1820b. 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/US6QR2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfd92ef624ac4816edaced2aaa275ef02bbee3bcb757df1e7ec6419b7cfe4b6. 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/US6QR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834835977c8ba8b0c798fa16ceb8ba4c8f52a1b4fb34b956afdfada437f026fd. 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/US6QR2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3f698dd9c12a66b455b88a4c73f6839751a5db82dc8f0cfa12e303d5db14d6. 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/US6QR2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5baaf81265380e002eb39f0636c5ccf110bf63a67071baca7578f6336c5e55. 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/US6QR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f0e9b3f1ebed8200b45153760efb8ab9f446e3a4e59d7facaddfbaed7d08c. 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/US6QR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78512654fae7f186e9624c9f22cf1915883adf66aa37046e888da281208719. 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/US6QR2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b581e8b253ad68c46380fb195d0ad5e2a5780af74c5770179dfa458f0b00fd. 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/US6QR2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c793b57ba15818a2558ee240b1061672e2f4f326b63484c57978217d66db9. 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/US6QR1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21763dd000a64e9f1d8ab2c906b689ec2de2764ced87f0a99716b0b6497a72dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4HR2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2220acc45561855238d3abce652f8f836c599ca5e242735f0878cfd57fa08d4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4HR2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904e8df63b49b5c0f11bc0e94cdce6681a59eb4b79f341bb3c49fed2c06e1209. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR4HR2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cc14849050731ab06ba2502633bb50f526dd84db5fc3dd5e789eec533e406e. 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/FR4HR2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9518759a5602fc1c9ea553602db04aecfc016bc9d659926c87a455827ad27c. 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/FR4HR2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904e8df63b49b5c0f11bc0e94cdce6681a59eb4b79f341bb3c49fed2c06e1209. 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/FR4HR2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1231e8e21c2dfa5da43196d2965462758853fe4d24e7e7fbc340adb2b15a76d2. 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/US6QR2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce113f98b14927ae3dc48b217315fa95072643aae6461f8d1d88a9b1bafccf9. 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/US6QR2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb43c343a3bc61b7497f33212657bc2860ce96fd4e4c7ace7b3c0c387372fa7. 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/US6QR2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf25cc63a979d47bce68de6cb7f5e4eef1fbc41261926b9a46a43f5838e9adf0. 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/US6QR2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449f99b178b68166b2a3c60712fd4d8ee2902e82b7602272457fe1949563211b. 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/US6QR2300037.