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 0xfe7451a12945492eca6276e1a726df71627dbdc5ba5602d0705f5a054bcceb0a. 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/666e998c-ec1f-4dde-ac30-ca7340880c71.json and https://artists.proofprofile.net/proofs/artist/666e998c-ec1f-4dde-ac30-ca7340880c71.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 0x3e9c45d1b1808a3c375ed4adde75e704cac966971cb1318030aabcda9c058acc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZDA42433639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73ce52cdb231e06d664971e69802ba2c744753c2e7d89cdaf46165556832e34. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA42433643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8bd5b5f4f3eea48c076008d8cea6b823734bdd04168a972166ed54d5b09b3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA42433645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb126f65ba9e5cf9240ae7184e4959f4b7a27e4895d2bf1a1ccb7d30a78e956. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA42433646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ddcb002b84cfb18d47a906a5adb354fa30dc9f90c50af7ffcadfabe970ecd5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA42433648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1b6740d0456bbf05ed14de54de61e812af072a59dc571d01858711753898f0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA42433654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c8556a7b344a15a49f95c8ddca726991afcba2879ce97ec5e1f612b7a7568. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA72441756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3df86a3f46d1a0cbebf9ba83ad3d98e6647e7c9c2aaeb655b58f4b9302254. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA72441760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714cbce01df9a644130a4a55d957a1388459b46ecf2fadc52cd808de90f0a717. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA72441761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04af71cac5f7af782bb544274f547511fe63a69566e702f2d871899d86b2a5bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA72441763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e027022a970320eabfb2c3769c73e000186991e6b1ec6490ccd13ad8fd787b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ22230117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd57bbfb56ddbcb2167601b46157ba93aa04cc8560f3e305285f18d4383d5af5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ22230125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5d7a763ee9623e51cfbd36fde5248593af32d32916e3917a940d1bc7148548. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ22230127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62286ff38cb726f861f40738fb00bd27b41e3ed140792ed0222d6ccf8fcb721d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ22230128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda39c792416b08064920a850fbb301435b6ce262b9cc7d1d3a484cbf514fe08. 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/QZFZ22232108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a428ff93c0ed745692020e78bad7e41ad168e0055d0c1b818aa4c9b13977501. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ22232109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80cc3502cec0394320d119aa45671fe3f6cd8ec152c51d398526e43299a110b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ22232110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61de27ce392e998328ac8ec78ef0d9a76c8c620fa2c43b0c08c39dfe3fbbec83. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ22232112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aa77882f2897d2d92be04209036be039a23b16b286f5a9ae0268aaee7d60b1. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZFZ22232114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d1c5181f971a5e7e991dc5daba2a87b2e378617b57320137dbf5a69ea2ff9b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ22232116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab875123f954b9c78eb784cf18e2f346f38c55a4ff14407ab9d474c899b5882. 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/QZFZ22232117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d67b064b0a829e920662e78304ec1e46ae48d52b301e7ea8f2cf499e0b58206. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ22232119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc3eb8819ea3773518082607edf43d0fd50b5727021d5cf69f7d2baaa78bd0d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ22232120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12b035b01670b339faf0f0cc07fa2f4a2e996286722566cdbfa7f23ce2afe10. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ22232121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59fb9172135abb2f36b36e630e1de600d2e2cecf99bca71bd2e3473302f6a13. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWX2245510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a64f63a097db935799c49e3bd2ff4b0e6e10a47bc9197f2d81549359954668. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ72277306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec19f1a71f1611580c98db06fdbeb196530604dcc29392d8e2d2e1f17e1fa30. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ72279074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d03ec1abc66ef75ba93ce44610d89d661739186b7730d54fa771e7a4150eac2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ72279075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dc7b5cdc871d8fbb462efccf5b4d10f9ab2c01d7800ba19055fced79c1ffa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ72279077.
entre la espada y la pared con el abarco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab44b42739918b9f64429720038e645fbf82444717e66c7a3a2fc71c6f0908. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ72279078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2b4c1374682ad41957d2949cd6ed0dc8674a523a77241192bef6b095104f58. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ72277301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f493763c26e203748ce269a5dadeb1608610ec4b23dfd12071f2f1d115dda. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ72277302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca0edc58863a79b27ba5cb32f9f2163e309fa7ffbf61b4b92b7267aa09c585b. 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/QZFZ72277303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a95ee0466eab281b7ef5dfbf2e2c734c69a618b6c77162f188f61a53757b82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ72277304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3157a0138db31c33f64ba81331c77998c4ae62ead43864cf7b6400277dfe3afb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ72277305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a64f63a097db935799c49e3bd2ff4b0e6e10a47bc9197f2d81549359954668. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ72277306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a7915591160029bd74e8c7e706284e5dbc5e104f8fbaf68d52932d3b4f0cf5. 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/QZHZ32244555.