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 0x1fb676f6cab8fda741f309dad083108b6ea159cb75371ffb6fa06b0cbb6ec4d9. 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/66297fce-1a52-4008-aeba-7d258a52d83e.json and https://artists.proofprofile.net/proofs/artist/66297fce-1a52-4008-aeba-7d258a52d83e.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 0x6f60fee9c38d77a20aef6a3dce56bc8f392de655b1c15cd80fcb8d7bacc11d71. 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/QZK6H2202470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeaf70e7bf242768a43dd3b6cd4601dbbaef6731a5999db067b7936aaf1c369. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:20:40Z), 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/QZK6F2227930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79249fc7e508264ed1b391d829f74aeddf66a6efb0cd1d2324110dcace3d9ca5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:54Z), 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/QZK6F2227935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5b27690feaac2028d1884ed7cb197a0957b4c59be9e7e97f2b387328df8e3c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZK6F2227936.
Música Para Locos ft. Ruido & Limbo Lowfi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087b7ba17cddcc06daf984f5c95ea3b55eadb4423d905c769542187613990b44. 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/QZDA62444892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a629cedf6599195c1c10a3d1e2f209fd5a25f3d860191df9a7c8578cc9b70. 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/QZWFL2345776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8d62f40cc666eb91ebf87a4c8ca99e7a7737aef47af85978aa29b6221ad31d. 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/QZFZ22466830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58261418be1692210e4be3afed665d246897db9af44e7842277427e4a930b57f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:13Z), 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/QZNWT2473768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb1674907edb053829047345955d6f8f11a6e26543889e319e4bdaef47d3088. 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/QZZ7Q2452157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90bf00c32b49aaaa1568ede1db0576c259518949918d9dea8c9f7d1b28b162. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN92519202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067de4651e7a498e9e54e2d5c4e0dda25e333ec07079e7a18203e00406968b1a. 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/QZHNA2520624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5266321ae4e571b0de1def980357ce339807bfd4a8a72d1e1f3677f3052b82d. 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/QZHNC2541005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5c5b18fd2b7480e27babcb913e493921db8e4a893d156c207c260ccc0d70e5. 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/QZK6J2590836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0206d06fe16513ac6540d75f9a4c6f56e615a5212242501d1e80b98869d62b6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB92500640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea017c4e5f0134adb63f700fc4efaf8667f442ea4594f73fbd43e69d2bc3340e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTBF2546848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd02d23479a5f6fce772e1fe10313c2d7738d62ecadb010fc3d6155b1a07b142. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFH2543893.