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 0x768444b4bfccfd21237e650bb07f2a62354648051dc4ceff44db254cb776b58f. 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/ba0f42bb-5898-438a-b161-9543b32e10cf.json and https://artists.proofprofile.net/proofs/artist/ba0f42bb-5898-438a-b161-9543b32e10cf.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 0x94cb1e181a1c78f16326f7e581209a87911c989b42da0bc0920ec2c678dbc4e8. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:29:58Z), 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/USZZR1010107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3b321c9fbc2741954d93a8d7cf184de31cd269862d87a255caa6e4183b22a0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:42Z), 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/USZZR1010111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb303a0290a37cf5eb180893ebe1ffd403804de68e9cba005a7dc8f2e3ea0b131. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USZZR0913398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272422ee459617b06f6314eec57de86dbd650f858860b01ccfef1dbecf64442c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USZZR0913400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ed105dc502c21e4033f8ad7b5b096a978e30cb3452af0040688d24fbb8c21. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USZZR0913401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729416b074c35a8eb972ba46f3c0f5cada7c0167c0f18a87f53d00ac61545d71. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:20Z), 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/USZZR0913402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4937c410bfdd68652b3890a15315231a6bd75af911d66c8e729a3eb22cec9998. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USZZR0913404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5e263014a5757baf3ba1fd63006398e074733ec9dc6099701a3f06d6ad2599. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:23:15Z), 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/USZZR0913406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eb561ff06c547e36dfa505e6ef8326c7b8b20dfafe5d6ae06158a8d73d27c9. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USZZR0913407.
15 Exitos de Juan Gabriel y Jose Alfredo Jimenez Con Guitarras Mexicanas, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c6f8c592ce2786eb9d527f1278f0fc70e0e757dc59275b5f1f7d3dee3e4579. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USV351446807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdac9640a2579722fd274a2400a189fd24dec511901f265731d3318874cbcc2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:39:41Z), 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/USV351446815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6bdadfa4dab3e77beeec713c182e655e1bd3c5eaa2cbccaaa4c295c9f28c01. 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/USV351446816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800f4f1660a802bd51e19ec754a4e767d866487631b0e458fa4a151b81ceb612. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USV351446821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bca03e8878207eb022f88946b6191d1c8fab0750dd90fe2177bb7c40fd83b25. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:56Z), 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/USV351446822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb861a5cee0b1c408e05650610ae806ec2ef84d347f3e047489db7684c1a15ed. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USV351446823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd24f73f825656c3f640ad001473b93bc1eb6a61ebb3c4aeeb7d054252884be. 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/USV351446824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239967ce676612def418000bafb5826e90cf8e04aac990a0ae558207dd7020c1. 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/USV351446825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14f2b212161943d654b7b49c7ff0b318bc574efbbcfa3be9ea210579ab6992. 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/USV351446827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc3d8234e342f02a523dce265aea469626e00c47172eabc480dc7d5b9aa9b7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:32:23Z), 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/USV351446828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd093fb090f57f1e53198fea9f88085ade1828f2d42a73d016f636c3f7dc16a3. 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/USV351446829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81a4e6632b590d5d67644798f10a21b824f9084290a7ebc2a17971154ff0b33. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USV351446830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10eb6b0510d1cc199c9a950ee7095747a9f2bfa442441309b8b71dbd8b5b9a1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USV351446831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae7605a2fa92c735ca6bdb9fec074b8c02123298be42b8cc8edf0909d9d4f0d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USV351446832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb17779652ac0afa58dbd96b3b26d95d34794a9bc2a544833f0984a602db5265. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USV351446833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195fcd0b6d4815fdf7b25ba9c80e078c6d2f93a6e7635d7ac053fca60f899f9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:09:47Z), 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/USV351446834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d219458b8ff2c9c962af603a769aaf2058600b30970a2b650302a0e45bd79c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:09:26Z), 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/USV351446835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19216cd4b91b9a7f02440294d30e4ea6090d5feab8a7d17dd66b58597da9211a. 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/USV351446836.
Las Canciones Favoritas de Jose A. Jimenez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe317e7f698f405aff9952f4fdf21deff992f644d7920f8e62e9be4a1f5b4a921. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM7281405684.