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 0x276a448f600191d778e5e35bc553b4c2c2874681f9e38f61133b1c3e15c2a041. 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/5e3d0cf6-08d2-4ddc-8962-74052ddd54fe.json and https://artists.proofprofile.net/proofs/artist/5e3d0cf6-08d2-4ddc-8962-74052ddd54fe.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 0x14ee8973f5e8ef32b83a36e7b728d335ba4d84eb34d7cee2022e6911928335ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2091908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5012fea80d78d1fa94dbdf73edce0d08688597bd382438978f189742de1d94. 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/USL4Q1998229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da8baaad003135db21f89655f7ca2c1b370501d95790d412ddd3b4321fd1d34. 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/USL4R2034791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f42aca7a570e438ddcfb955518ab472aed4237354c8ddef295e806bad9de4fe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2193880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb73dd7e9b26b2f1acdd29e84aa15c0d5ae4c3cb91f07775f431167b63341785. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USCGH2193881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b7f1a1d5b841a110b3d380bdfaa864a11c574f226697206c0b1dcc64fe064d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM91913014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe7ede84f813e24bd40ef4ca0c8b1e4b971d58e85f483ce81f520cfac17aeb. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USCGH1980225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcefa45e0947830b48314e9c51899f42084fa49406c55cd072073cea0d8ae4a0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USHM82094597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0829adb6cb6633d1b75252b98493cff530bebea222b627f5fdefee21a80c4c52. 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/USCGJ2276249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542dd6732a2c37b42798d0a53451aad68566b928c4385588ff31f3a3dc4100ac. 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/USHM92019345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe174475b8ed632336c9ed19620530155c8c8fa523c2488089cb992e592df5efa. 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/USHM92019347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15da6dfcfbc3ecd36162c9a4509e6a5d2f82ff0fb4fc91638344ae96eb3bf5ec. 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/USCGJ2190238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de4e6c83c53915495631ceaac729a6b81e37e534a4a0022ac77cdc68d06f2a8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USHM92172918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8001479b41e5ed1759dca277b59772a29d89462b83595b45928daa1fb5c046e5. 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/USANG2259183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01b048cceddd118308d3a61597b9d520b6339ecb3a9105e541f14fb59079d19. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2245121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b1fe225af2cec8d96beeb55ff59bc781b47bc78898afddc4e34daa8e05596. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM3DF2263540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad09eba05543b6fab039b5b8b5f213965256fd863007753798f1a8c42e5098a8. 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/QMANG2202055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138010624a7cb53d354296fc4b5468c5f8293eff9c9e6bfd8a8a796302f4635c. 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/US3DF2441451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08d472412e1b4796fbb2832aa363c9b94ed8b0321c284c974fa16546cdc1011. 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/GBMA22404111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd9cb2260aee0c40433db0307d8d7eb5b0519b85d0bf44b93b1a714121b1ad. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBMA22404115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee799ce8a27ef9ea379d6e359c57557d673016320c5496bee823739b457db294. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXF9Q2413537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f3115f0f30bb6e33da720daf440e1342e1bd3ec27c6700857409325d53d335. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GXF9Q2564366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c38ddce73ffa10a74982a37cf8322e38e13a044d218d69b8f005e3a201ccde. 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/GX3Q92498731.
Una Conversación que Nunca Pudimos Tener
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8099ea39f2148bc2acfc27c0342bc1f6d18f5fa82351cf1cc699e6f523d28ae. 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/GXF9Q2564367.
Cuando Regrese a Casa Seguiré Pensando en Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717fd27aadfe15d88ae1aa8326fe1fb5c010e504c3aefc06b0d508d103004916. 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/GXF9Q2564371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b1fe225af2cec8d96beeb55ff59bc781b47bc78898afddc4e34daa8e05596. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QM3DF2263540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa398a3e4d2d45b612f94223e1a39458c1e15aaa4e66fd83a0019856b17ef71. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GXF9Q2564372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cd9d3f48b55454c1528cb0a5f1981cf146f299887098b999f8d56c0e399121. 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/GXF9Q2564374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb29f633acb67672a38e1e04fbe6382a9025cb6ad64505c368de11706d5ab5c5. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/GXF9Q2564377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8431f3c889868d8c257ead5cf4e1bfd1ac2ace0a41634fc8a6e042a00cb35c5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GXF9Q2564378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab42d7c9b5dda3fbdd959dca6a89c4bdf6e65640cd0fce4df4e2862a37978f. 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/GXF9Q2564379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa012beb0e727c5f40b6ed44887d55c1d12fb292c4d1b60079fee8d25584d0e99. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202152745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612024093cc87af9332aa54a007bee4666a460e4aa4cd012467abf3760134abd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUM72104786.