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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708aaae7f4bbb9c44f2bee9abfe37f8112b74bae55e74dce0856bd01d5fa6838. 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/0d6f1cb2-b2cd-4c9c-8e78-8fa3e8309583.json and https://artists.proofprofile.net/proofs/artist/0d6f1cb2-b2cd-4c9c-8e78-8fa3e8309583.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3359deeafa7b8d3f4acc1104e308535642f9e0499b3d4099c32f6bf722e283ec. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QM7281742771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ede837d0be092321d2811a338238ddf57a6854f98c1f8ef1c02fa5e281ed87. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM7281742772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe513316b5cf184f052d50051713cd35789312b6d07e238b04e7ffdc85ac747bb. 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/QM7281742794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58620936c8c59ed46b247fecbad2e3537ee4cb9816706b037776c67439fea03. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QM7281742796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce90b1cc946a425a05909ad269286f02e70d3a28dfc1f35dfffc3ef885214857. 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/QM7281759162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac995edb90b0f19a05a30781127eb6cb83182ecb45e12cb54230c833056879. 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/QM7281759163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb06c0a14e3be0aa245792f79fbf6c26b66c973c0c8a29da04bda8dad8867aa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMBZ91762600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad5abb6c97f48f4545ea5a8982c940d94592bd624e25d94d63d73dd8cee109. 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/QMBZ91762637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb863897e89488e76f1ad5d2f03011d9442b828ea4ef8b47d94e68abd78a3309. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM7281792915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea43f1ce49653f50993cb24cc3d74df159f0563c4f676966465852555fbb27be. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM7281792916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522c1d04b6ae5d79c0cdc7bb41d2f344c036bde64ab60455c56807dd867ba13a. 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/USZBG1118235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced4860f5dc9517d0ded1446400350115a76208c8880d4a1e9d2af6b92fe6721. 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/USZBG1118239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68912d1b5e748e1dee6f72dd481f448858523691561286d374491de861b8d863. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USZBG1118242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f44da779350e1200ce464ff0e12ea9a49143ce14315cd8b0a73f0f72b62360. 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/USA2P2127886.
Tu Sentida Y Yo Sentido - En Vivo Del Parral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e35c46c53db1558804c2ced96648645430415c7313cd8059d32ea757e17bd20. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USA2P2127889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2de43e6f5ca689bf30ab867492d5e986a172a64106d854b7c59c3bb739882ab. 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/USA2P2127890.
EL General Y El Sargento - En Vivo Del Parral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11690e256f0862b622195c9286bbc28fca25f39ec234c5b8cda875d797cf810. 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/USA2P2127893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894a544bd6cf40b12800f098c7135b2cdd3c4d12f1a6627f73c01a4585ad8a06. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2127892.
Ahora Vengo A Verte - En Vivo Del Parral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef162812b6d2b102d2a9c83c2b9fe9027c7d1075179fd6ea8321f44d32e5675e. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USA2P2127898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c94000459dbafbd875af6df5440ccd24c1e80f143c113180b0568f5d1e8c4f0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USA2P2127887.
El Diablo En Una Botella - En Vivo Del Parral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282a866dc7e61eac1118b82305785eb0effd266a403861618a5ea00d4a059b20. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA2P2127900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd57aa7297300a93eacf1aac12da45f85686756383f5da1d3dcdfa505c89e54. 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/USDXS1702305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844a88a02237c42d4954f72e7975c0d23f2089396af38bbb973fd26543532170. 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/USDXS2003190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2a5baec1550fd4c520f54c1bdfa98a4ab562049bad249ba6d1ee4b484dba31. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USDXS2003191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56857bd4b99218c64775c355c7bac8b92dbb3ed3de8f45763517e39e2e64a64d. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/USDXS2003192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4955d46f8c1486d06eabe1a5a474ae30eb656a37be5c6f83fb303237c75326ce. 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/USDXS2003196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09252103a8ec19731125c5f893bce523bb700fe5f8ad5d2e60e4b9d4cecd5dd. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USDXS2003198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23280c57b76e61d66ebca967456e1fe2ebc2705d366a0d5729d721e4a613eac. 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/USDXS2003194.