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 0x9f772e4ae6092f9224a75ae461a8094e3202ededfdbcc9f587c7dcadd519ccfa. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/561eabef-0648-4510-982b-3b8eae7aa114.json and https://artists.proofprofile.net/proofs/artist/561eabef-0648-4510-982b-3b8eae7aa114.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 0xa75c9729f4bc518c81d59425ce25b9ee8e13eb539e96ce033e18c3eee92271fb. 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/QZDA72272591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1626113689f767c27ee1bdb916788ae916c3c09f349e6f057332c114b01e9de4. 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/QZRP52178280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408733131f75774e290691ebaa4e0a5b21221feb01c969dc4a4fe317f7051d80. 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/QZDA72272598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbf9815f13d2a1f641da52404ae2643dc575a3e322aa3494124e95f82930f16. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZDA72272590.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef768430f9d73a9d4eace5d180126c06d53bc66fc95823a31c33240d50cdf84e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZDA72272592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c30fb2da22f20a877c62960a0844a63366d6935ef45006a82c7a0191733d28. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDA72272593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e0ff6ebfa3a39127b60147184dd3ee9dad2f72ec03a55ac2059cb5c45c740. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZDA72272594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf2c4c5eb630005ee9752c2d9f88152751bb34382efe7bcd9ff9d5a61c5f56. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZDA72272595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf71fc82d23fcd1e502bab799e37c5c47fc47d4f4a4e4ebd2443bb93e89cb1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZDA72272596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b861ae6688db2ba758569cc2706a67935cba1b4a7d27935935668c4ce162a03. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZDA72272597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551b28f9b4ad600b549740c8db26bc0bd11fae976c1cde534aab1a1596f73396. 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/USHM81202756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa784f391e2925a15fcfd18e2dd309d0e8ee396010e1bce61b8ee1b1710066ec. 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/USHM81202765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf891c67fad872c2269a187548ca25a09f2ba8656f4a8d8234c3b2323a0e8b743. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USHM81202757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad040440d51f08983b920717a84394ced0521a7c9836d47aa792fa71e61ec624. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHM81202760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ccf722f0f6d354b96671ea58cf166007d1e3c111826311548e2a6138ccc45. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USHM81202761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45f48ada4396df3dfdce3877307ab42a2671b75647e2399d0128a0181e3f3f4. 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/USHM80943450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f01f92a52ccba26e9bee5e80b841c991cd508f36b3fd3aa4b9ab116086063. 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/USHM80943451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10dd608e5fcac72f71bae6dface407ad6b821e7bdb5a39841cea83e900d5462. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHM80943452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afddc20076cae451feb151ae6fcb9bf22645520193ccfaea6fa9e7e766c8ed9. 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/USY280714793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9bc3f8551eea53c2b01f7cbf975148f5d0cb8042b7fc9e0c6c83832f74c3a1. 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/USY280714794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb839bc6ec39e45dd02632f20f690a2d57a0d72980704002b218c8b700e8ea6a. 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/USY280714798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ac593c7d24b56813ef9e6b3d7f7f3f685953d02ceea2ed94bde78ce1c916f. 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/USY280714799.
This Troubled Heart Of Mine (Parts 2 - 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d794c5a31ef20e3df5e90b08fb9ecb7b3bf35b823d95af8236121b7043cfdc. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USY280714795.