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 0xde4630cbe63b6a0a57a5b10ddd433538a061d5c132f3d1a3c2d5213a49014334. 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/2f61e3d9-9118-41cc-9911-362afa9ce437.json and https://artists.proofprofile.net/proofs/artist/2f61e3d9-9118-41cc-9911-362afa9ce437.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 0xd3bde3d0b9a3ef7ef12aa1e712861989f13f38b42a1527ee3b22654a40e610e0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USHM92087709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe165a4c29869033905e52fe54a691d1613b9cc82e74c736c927bf2e4f989e3. 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/USHM92087713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8acf7793b70bcab06da746911fcbe62e6d295588f427130b2040a1f1c6f753. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USHM92087717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9adac3b6b5f2a782aa4cd17214334c1f81d7c478ff57c95ca89818d0504c7b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AEA0D1927313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3335381485aa059e11bfc52f03ad80f5b83a8584c958df34096cd7e8d67f543. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USDY42011921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53c169e28b40e9cc37c795503d89a6ed507aac07acb33d74c58ea858b090b0b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:04Z), 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/USDY42011922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecdd4a618cf89cb0e6d00be065153acb97d119ac2417670001e063b5ca8ecd5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USDY42011923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199b3236e936fc1a505273511debb4576f09517e569b50a19af6bd6a8e3f06dd. 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/USCGJ2162560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e2dcc2ce26af7706d016825f4cb1f3f9aea777d6d5a83d6c0968c48802ec21. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGJ2162566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf01864ad5d8bd9dd06e4ba47e9f4c0e15fed2a00758e61fdbddf25c6478b8b. 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/QZW9N2269877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477850d4887198c3f2b10f56064c15484d987d604c42a40553221f7a3efe6878. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZW9K2438204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cd9a6dd2110ec04b2eb3a104d6f67d448dc42cd06d375261a9eba252756a53. 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/QZW9M2440612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d64946c00c3ee6611a1e98dbf1b95a7059d00c85e0ac5531a804dbc69191954. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:55Z), 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/QZGLM2506299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a951b052da61a2e173290ee174e343b7931ed083c86d799ffde91b4c4b789. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZGLM2581928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c05f9c5f273606921df2ee5d212e022b6b6a769f10e8cad3ea8f38d49ab23. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJX2511039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780b957a27479bb418b8150cbc971bd3ad5b9591966db130497a8394deb1841. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJX2511043.
Homenaje a Rolindo Fabian Camarena "El Marqueño de Oro"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b21bcdb5808be5aac8c09361ee6364980a56e3054808f93d08dbc92bcebb276. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:57:32Z), 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/QZNJZ2596206.