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 0xa6014f599c7edf715f017ac25e4ad003fb2be1ff7aa7b204ecec8a9527f3fa60. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af1c2c32-f3e0-4f0b-b12b-304fbe4c02f1.json and https://artists.proofprofile.net/proofs/artist/af1c2c32-f3e0-4f0b-b12b-304fbe4c02f1.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 0xe9fdcd246945d54c7478ee592f50afb6e82ae918b565fb733e14fd41bb02504d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZ5AB2055728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21642353371eb0001372b4420e37e4e8f0bb87fd21499658097bc0b3b86f593. 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/QZ5AB2055729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe721283c062dd1bf6a331b1005392e9566dc749f93c9a51078d4ab0708142c8f. 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/QZ5AB2055732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a5af7f8f701fa24b530e94c4d9ab2a02f56f732ebf77a2f5b10139db921255. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZ5AB2055735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80f2f8ac01eb128b2cddb87174977735cbb3b9551c0425189aa9b50c6c73491. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ5AB2055736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774840217892d681b7d41c5126298d46e4c031fa6f3265d2f7e0bb24a742212d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:15:16Z), 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/QZ5AB2055737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912f335008245cddd90da8a31ada55ef7009420d59b7da2245e012f69ecfd65. 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/QZ5AB2055740.
Cataclismo / Flor de Azalea / Obsesión / Te Amo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb6fc10a5b9c454d2c507f94ec394e61679c57a15340d42da4b9a91eae0a787. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:17:37Z), 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/QZ5AB2055742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd669a4d08ddf839d91dfa6679bd77d8194db136808d17767d16cf03ffdf90b1f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ5AB2055743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5896ec0e3ee09a5808d8b54b4a4874e80d8c6b805a60cf0a88d7c669e39dc5e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZ5AB2055748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed1b4d0dbc2cbca2fd3e593c379c8358362f52b2bcda03b4929e69af96afe46. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZ5AB2055749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac2229dc38834a677714fcda7523655ecb004a2b2ba61bfe713cd024d1d94a3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/MX3741700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c883725f66f93571cd845e440e37ea55e010f3ad57534a4eed2ccb154b78b2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MX3741700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ec0ef08ca420f6d1727bf53ab507dea66c3a1f010d64c7cdd51db1b39387bb. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/MX3741700200.
Tríos Popurrí (Contigo / Irresistible / Como un duende)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994e707397f258fd02a31a8db2c334746d2c60ee5ed508e0bb2b0db2760ad528. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:04:48Z), 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/MX3741700201.
Huapangos Popurrí (La pena huasteca / Tres consejos / Me Refugie En Tu Juventud / Adorado Tormento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8bf72fc106c9c8b9a2951673cf01ac800c470b9f335a7de495ca84071ae232. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MX3741700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2079a11eff21fc171bb45767b6575c78b645086f382c93eb6665f092eac7d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:48:35Z), 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/MX3741700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf423fe9bcbb22d0c25ecd9ea450dcef75d8297d8e3749d67ff77ff7829b96f46. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:35Z), 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/MX3741700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3084e69ef55fbe0b0cbb1d3d5dd470ef61c8cd7259f63185689486af26ccc2f8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:51Z), 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/ES8581900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ccc575d8413a40087ebc3b5e2aa308010c45b6d28b95fab7cece0f6a10cc2b. 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/ES8581900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa0350c2d65a4742ecd1bd44a57ab08cc4df8aba04a24c4cd27eafc83e023c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES8581900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14dc60f4320c14854fb096185941695b60f246ca30fac7f607ea6d5906d1d69. 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/ES8581900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f2adb66641e628007904e6079a8773c4e40ae6d76d83b36cd566329bb3235b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ES8581900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba32f7964a43da4c07ee6cbc845b08186a17d2825c3df3c4733a7f29de20ef6b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/ES8581900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40501719b82d12bc10905fc010a05296780c7406c0ae9b8359eb1419ff1d0dd7. 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/QZHZ31998888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5d846ab5cda676085cfa670438672103838867412b59bb5bb1c1359f30b20b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:09Z), 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/QZMZ92533708.