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 0x24e7bf4ab4515abb49b40c6a63b614fce56c769a757b33551403175b5f0f097a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78d7ff47-1cff-4fab-b909-97ef7109099f.json and https://artists.proofprofile.net/proofs/artist/78d7ff47-1cff-4fab-b909-97ef7109099f.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 0x47770855695f5cab675e302a5c2a460ab53b5bd8862aba96965ef50c7dd976f9. 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/QZXPU2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75b7b85bb3a90e8ab933c9710eb7560bffed4f6aa002b5e9a2805d90adbe148. 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/QZXPU2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caf577afe8e95c88b651e61b89cbf6c74fda46dd6406201a80b6eb31984aeb7. 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/QZXPU2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534170d160daa257dfce6eed1d3c782727851a4880027cd42a017edb34dd2260. 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/QZXPU2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6902b0fd2cd284254689b41b97ed3c33bf36605f2a066c9f5cf3bba9b953ba. 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/QZXPU2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fee3598a7f44a8219393cf7db26b9084a23df848dd5c0b8b6e2ffae8380783b. 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/QZXPU2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee108161e9c2c93bace7c031172cc41ef7ef3c38f19d0f999bfb21db4f53d01. 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/QZXPU2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6164a16ac5e51054aea1214e1b9e2ad128b6d95610b121f28c3cc1369f0088cd. 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/QZXPU2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d00f9da797299b13baa52f32b7c8420a5c51a8bc4981b08ee34e8413f3870d. 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/QZXPU2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd545c719e1900ab22d98f99c9657eb9a55f78d91a6d220955391d6a8f54990af. 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/QZXPU2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4406d57ae62122314e8321a83ba92fe51fd639536c665b9270b8e6b3bdc4f6f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM3DF2148555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2c146dd90532418a2ec713a3a191ac24a7a2ee96f479914a8b1eec2477aed. 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/CAN112200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2c146dd90532418a2ec713a3a191ac24a7a2ee96f479914a8b1eec2477aed. 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/CAN112200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a73b2d7ef0e36eb70eca48ef838cddd08c0525222553151b8225168c9d5f677. 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/CAN112200552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2c146dd90532418a2ec713a3a191ac24a7a2ee96f479914a8b1eec2477aed. 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/CAN112200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95b906cc5db473c7fc59398ffa2a2ae4d2aea423d658d8cac965788f127e1ff. 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/QZ47A2200516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce3a208aaa07e1c0ed1c9763517b9b0c286c3241398101968f6f5bdb0fecae. 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/QZ47A2200515.
Loved You A Little (with Taking Back Sunday and Charlotte Sands)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce3a208aaa07e1c0ed1c9763517b9b0c286c3241398101968f6f5bdb0fecae. 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/QZ47A2200515.