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 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 0xab8b2b796c8d4da49c5bb0eeab9c069f28e4e9d39dfd7edf6d82653bf27dd1a9. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52aa4ab4-5529-415f-87d1-44d5dc6a3917.json and https://artists.proofprofile.net/proofs/artist/52aa4ab4-5529-415f-87d1-44d5dc6a3917.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Two Tails & The Dirty Truth of Love & Revolution
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 0xb48cc86e7960b01ff7e6380ae0fa7c164bd055af3599e8fd621fc1e099aba987. 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/GB7NM1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a837d8486e082295df1b96e44a0aac5a5e6e433bd1a8c0f28697137f49a835. 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/GB7NM1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ad59aede2b0aedf27f4e8b1a290b271a5badf6959f55d3a72e553aab79bd68. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GB7NM1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7eff4b410a61cc391b0cafcdc75b6190ee289b9d2b805a7da3267d397169b2. 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/GB7NM1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2be9745f032b95108ef5903a9ff834505fa24791f1cb3d2da38b826aea6c31. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GB7NM1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc39f4cc85d1a8852f88006a176dd062f4f1c4bb2e5a0b64a4a6c90ed6f99009. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GB7NM1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d587bc569ba1696424868b62cbc1a6f9858cc2441fea02d44fabb28e775ce1d. 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/GB7NM1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac3087bd85c8f0ff34071e8463e88b40b64031384f5717cbcfe48bc36c036fa. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GB7NM1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5418eac2922b88ccb580fa5a6d7acc55d998e610cbf42dbdf21113d079c50a6f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GB7NM1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6792b4b440c254d5b3ba08f071c5cf2e32d5863d4d147385e088bb1d46e9c0. 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/GB7NM1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8dbf309f2b85fbac06bda84070e5cdb953daa2fc4316d158a535c781b1722a. 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/GB7NM1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022a1906472739e2e74029e0748c30ce8333c782d023c79dc3db6c7a1ca009f7. 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/GB7NM1000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062b04ad47a19b105944e6b3dd4e47bad64dc30ba33618bd022e71f84cc6eb5c. 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/GB7NM1000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91775cb9a65956c6493d8c52ae42c19aa73d200a018c4275c880f7a3e085480. 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/GB7NM1000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363e36ac8ae28fce47c811023d40ef2cec60ab8c980a49217e5c9a17a9d9916b. 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/GB7NM1000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788a393cdfe1513d3474a18e26f445abb1961a6a4b477c217c10d3ee3392d3b1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GB7NM1000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1a6999843ae898de51dca81aec1cf1f0692a92b1636d5c8a0b556c408703fc. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GB7NM1000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684bfdd8ef0372ef4d14d3b3d567f50507b78c6055b607815fbb7558660d2899. 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/GB7NM1000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627d38b2fa545de2d89b6ec317309aaf9e9fb04deb983f803404290a4e031bf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GB7NM1000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4df984b07c199629284ee1ce833ace66d6d46d1e9ce7c09c7176152ff14023. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GB7NM1000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8b48acc6abc6a8e6f926c52c3e495fbe153547b5d3274816f7f75af80c1930. 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/GB7NM1000057.