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 0x90023c82da72c0dedc8e474e20323c4773caa22c0e9fbd0c6301c8c715322612. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62a72fff-8fbc-41fa-8a4e-a67f144c8ba6.json and https://artists.proofprofile.net/proofs/artist/62a72fff-8fbc-41fa-8a4e-a67f144c8ba6.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 0xeaed0c31e35ed118612d6fd46835cbe1b0961a3422b8095a2467ccc87915e2cb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCGH2054535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d2cc80912a65c0d2e5ccb85ffa66dbf184c377923a3dd8fc07a791dac2354. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USCGH2054536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ac2f2e6bffc5dcc4f25e5e4f644cae5f44a1a5760c5a7ed12a61beef79d4c6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2054541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501270c13d2761494cc57e87388314042d471a3cf1a14d36a249119e43f75822. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USCGH2054481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94bcb97fcda7e01d57c26c059b3b85572bfa57d3ce292238fa3dc6d29b0deaa. 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/USCGH2054485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb60de7fe95e4cb852ff35bf51af9e84214cd6689739b5a0257c28fbcbecb6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:19Z), 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/USCGH2054486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96654c8eeb7d30ec2b0338c421bf828b2fae2b51637db7e71e1a015673ed3a43. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH2054487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf336e66521bdeca0f4a59342f423687741b8351575c61e83752a4cbbfb4d1d3a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:35Z), 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/USCGH2054489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d0adb44c96442995f52b66469678eb81308bec58f831df9ae3f531d2df3af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2054663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476fca381855ce86ed7d9ff7a5c7f441d2bcb079c95db634ad6984a92117ac29. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USCGH2054664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44740b4afa24dc1b1b85193da6b67b964ac543c39ed4429e0df3efe76d09778b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2054665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbb22afe64039077b446b1e8f53aab2635009136589a4c04af05eecba59214c. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:51Z), 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/USCGH2054599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bff6d8c7c1c70f48cb21c8fb8cf635edf4a7df347042ccde4d04dfab452db53. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USCGH2054601.
Recibiréis Poder / Te Amo Espíritu Santo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb52ee79bf25508602c020f31b59ded7c46d019eeac2e6e7db4509bfdb9c75d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGH2054452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e679c305ce9a7a0864ea6484a63bf8190a4792ca19786711bfb12c00a02140d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:13Z), 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/USHM92597666.