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 0xd92c1266ce2faf16af5691dfc269131d0a3167d1e9a6b9d72c9afe65bd730b24. 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/8f23fa8d-cf6f-45d3-a329-2c3014797495.json and https://artists.proofprofile.net/proofs/artist/8f23fa8d-cf6f-45d3-a329-2c3014797495.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 0xa5b15cef88ac7c0585bb7635977b7c9c86b65ccd779a8b86f5cdf7f8dc90250d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/DEVU51897379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c82410d3939752e3a14198e3ea3bb0233169372917cde0c5cfd263945cf46. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEVU51897383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239192604ca9132a8fce9a04060367ac233c5b19fc6921e32fdc9d9f4d680fab. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/DEVU51897384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cd5660d7f584a544a6ed8df40e14520ce5a64f652241f348fa92c49b5a3c94. 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/DEUE12175129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa447d0414e5641d787d528520fa80ef1c6785b9b56992238c85a9c5da03d4216. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEVU51897375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0abc5a636c8cc6653451537f910c0c93a8e27c17f9809645c55b98106ba0f0. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:44:04Z), 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/DEVU51897376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98204b0a82b5850a4b3d95fff7ed142a51b2938b40ca2d17bc39e34d8c1f5017. 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/DEVU51897377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b15cef88ac7c0585bb7635977b7c9c86b65ccd779a8b86f5cdf7f8dc90250d. 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/DEVU51897379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c82410d3939752e3a14198e3ea3bb0233169372917cde0c5cfd263945cf46. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEVU51897383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157737708a26a3d70ad6f87fd52be2e8dd768a46c51f64bda3091891c7b7147b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEVU51897385.
La Psicodelia de la Virgen del Patrocinio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb946a3fc695f63e72ae9daf95e11b5ff9b6c110bef654b5cba9400826aabecf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES79A2118201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0b51469846cf7ebdef58079cdc7f752b6ac89ea12840a15e4e03f7d897a73. 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/ES79A2118205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494f347b3123a0bc1925d8c0c82b69c462d23d27fc93a4575544fc2e9050a430. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES79A2118209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c4ebb8154fa2b5214a24c947ff137f775ed3e73c80dfd4297a6576212ae86f. 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/ES79A2118207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde5ce20ae3fbda7e1fdd7dc9562158a42cb19fad7d0e99b016e2d8e58baef99. 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/ES79A2118202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29361a4745c81896c1a8cf86b214aeab0cd62fe73e358e0dae828391eba91519. 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/ES79A2118211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c4cccfd9384b7e2ab5ffd9375e41af89b5206a10326a449e81d98ba985fe0f. 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/ES79A2118206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef72dc53672e799fe63aebec98bb52db9ca2ac7e5224cd80acde366b00ac095. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES79A2118203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d619c9eeb26365e88c98cbda01ecee591da4c99871fb69f73a029c25e832c61. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES79A2118210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ea86518429ecec6538eb69058602cfacae07b8a1fad5826d777ecfb5cc25c. 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/ES79A2118204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617b8607947cd0ad42c02a84c703fae81e480a14a22e340058c8a855b112b790. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ES6102528007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f4a37d601b22c0caf5397c78ca556416b12e5837ad9bad27538c7fcbe7678. 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/ES6102000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92317d4b33a274c4870b825271e01342059db43d77cbebcb845387da27c6803d. 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/DEUE11818311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63545b76d2a57ea42327d07d70d67a6222168965c76fb99200c4c6ed45548767. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA011810049.