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 0x6fe75eaf97e572a6fe5372a386e190ad1527fe865dd7f303841381f19c1ddf0a. 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/e59a9b1b-6c52-4165-87fb-43f7d44035d1.json and https://artists.proofprofile.net/proofs/artist/e59a9b1b-6c52-4165-87fb-43f7d44035d1.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 0xed0b9257a8dab9bffec91b48ac53ed91d7def3e7655f65d72caae96fa114394a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARF038400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856a3ad9f34460b35e287d580edb7d01a791e700d2b2aef210e11c74836066c3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ARG991038226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76071950ee512436c36d36e4a36b9ac602e8587478818a914bb02a38edc08c8c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ARG991038227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f08e7cd0b130038855059fae2062bf0cf6b8411ee98cdae555d338aece72c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ARG991038228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3bceeffb38a272bb723c50ed0075813dba42af1cd0f3f64e9cdb7dc9faf87d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AR15Y2100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d15a5036b567a1734fe46ef6bf4a1558f46efed76bcc4b9033ce5c89beb5d8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARF038300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6d9306e4eb5c76301a9a86a2c4f992310444c7bf07f4847e39d78a2652a44. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARF038500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148663dd6b9d9bc7f3d5a77470f95b8291b959dc502147ca3d8ec9bd9d8b1034. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ARF038200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c0d33f02176da80af51c1be5ab54f9ffbf01ea81ccbe4d675ac5091d327927. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARF038300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee3b68e759aa291faa546200593d8aa9eda2ec45aff9b4333140c7f6e6d67d8. 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/ARF038100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5d53a4b46201a1efb3bd1e4454223328d367d36e9ea984ee2fe28ea5ef6883. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF038000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba45a86f3279848d9874c4fbff21fa1ba3f5fdc781e1e5fea9ce5395e2b68550. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARVW52000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba45a86f3279848d9874c4fbff21fa1ba3f5fdc781e1e5fea9ce5395e2b68550. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARVW52000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44717862157d7c225ad4b6836467d47491ebbb90df4df972e215ba5226c767d7. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:29Z), 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/ARF038200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148663dd6b9d9bc7f3d5a77470f95b8291b959dc502147ca3d8ec9bd9d8b1034. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ARF038200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9294ac6fe750596634639f3265a79e8a56cb27d09a33f3d0810b8d1f1234035b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:26:10Z), 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/ARF038200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca216190d047710be99d13291da437863f3491ca5193547d9438807907121fac. 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/ARF038200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c923927023febb5b25f8dcd2ca3ead24acfc2c934ab64c6a96564389097ce. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ARF038200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d3e95d2609cb098f31a09a4980e970d471fbaae40866ea444d23dfa4f3959b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:41Z), 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/ARF038200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c0d33f02176da80af51c1be5ab54f9ffbf01ea81ccbe4d675ac5091d327927. 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/ARF038300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b47abc71dd8759ed4022fe0da71fad5ef8f4b84b918a2be72f0cd23ddac521. 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/QMFMG1373881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d61cb9331323bca37040b0f2fcf40901fdcd25d4898b3dbcfc7bf5b1a2548ab. 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/QMFMG1373886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6e8b324ca1eede4b081ebaf35b45b77f12486837ec44c4fe4690853ffde993. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QMFMG1373887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b5b3301a9b530ac707cdfbe8bf5e9fbe245c4c8b898dea858e4e5a8b9f5584. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMFMG1373888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd025219b4ea90ad6399cfb4512e2f9374f6aa491c3d4a5e3f85a6bc2542cd934. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARG991016211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6414b2e98da906c7af6c3c5db36aa64860693958474a11315320461dac7768e2. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:42Z), 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/ARG991016212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac79d4517fa939e7251b56074fc2151bf6d343abd1d3875035e36fdb969e9a4c. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:28:52Z), 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/AR15Y2100509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0880d0dc999223b3e214d6e05d9a7ccd237214c10ab016d0f08a8411e5c4e809. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:56Z), 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/AR15Y2100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac79d4517fa939e7251b56074fc2151bf6d343abd1d3875035e36fdb969e9a4c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:55Z), 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/AR15Y2100509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0880d0dc999223b3e214d6e05d9a7ccd237214c10ab016d0f08a8411e5c4e809. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:36Z), 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/AR15Y2100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7638956ce4f139496895cc7533732ec318f9e919978cd83acd9b58913833177. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/AR15Y2300057.