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 0xe822d09b76f252aa24fdff20551f33dcbfc70923079fe3822e625cae407798bb. 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/4f9b3778-1cdf-4fe7-825a-2d77a0beb004.json and https://artists.proofprofile.net/proofs/artist/4f9b3778-1cdf-4fe7-825a-2d77a0beb004.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 0x74cb02a3e42686c782f21cd1deca16fa8fdc079931826a48d9608033ec860201. 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/ARG600800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60d1f16baf159adf727ff69a6a0df790c40a68675b1848785c6fa49c6e6b628. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ARG600800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82ad82062757abcdc7e44955c5c2585a1facd6ca2ac6a84aaaf95e8d54f961. 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/ARG600800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4880714bd6b6218966b377b1c3b04a67521903e377c4b8d4062f4ac8117d03. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ARG600800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bcc46479a3fb927cb98e20ae4483559f9f1f05a9cf42824220650910c329ee. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARG600800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071f384130f70bd8d0a2774e0d6b5d2f80566c57094bd852a7f36c1c4ef43894. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ARG600800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a008fa8c08d0c2e6df4db7f428a0152e19209f702ccabf4e503e4bfcc03159. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ARG600800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f324fac79ca69a07e5454aa00fd5eac1b4220ad9e1ba0189e103c7e44c8565. 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/ARG600800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce00ab4bf64776fa49f2fa40a66b7cbb931538cfc9886183cd7ba93d1f923bc8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARG601010636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2358e4c6e8d75b3847e8f14621cf5a2312f1955aa052d144063f0e21917d90. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ARG601010640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a98e359ffa3af5f42f08bdb9179992084b8c9484c75c2489c7675c48e7f9f0. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/ARG601010641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ca7ad956d7e252a91caf537a43df50e83157b6027661c32df60da36f9bf943. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:56Z), 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/ARG601010642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3f4d0c54fea045b0f209f3d5f621e859b72b00a7d97228e772641ffdc8e052. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ARG601010644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f25baa98b4686e8290a8ea70bb20c81b2e54e73ffacb914a1870a10e1013636. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARG601010647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094f41cef4fd3944b43b7641a023413420aef73a7d20be2959275121d63bb0ea. 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/GX3HH2116006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b3b03ae6b0989956b632c001f2daac34da9abf085bb38894d397cd0ee8d3b. 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/GBSMU8499728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07cf55303fbc71518b822a8b5711ab51ea5269d8ac7fcb5ed3deb87029e29d1. 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/GBSMU8499738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6716386642ca8589adefdc11c8e4d83f4fbcbac2d410f7df6fc8f3c1d869640. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBSMU8499767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27256b858f456cc1605ef41b8804bb5861e661518928ce209803d96839dc0ec8. 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/GBSMU8502245.
Llamame / Encararte / Mirame a la cara / No me digas (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bbca3985d8621fae09bfa36298726d5f528cb4d41aeeb8d310ff0546c3934a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBSMU8502256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928c7eb0d043c97554d54ec50a0c16e0a32dac1250afd89b3c457e7bd706d9e1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBSMU9309004.
Encararte / Mirame a la cara / No me digas (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41405de879a71dda18b3b0bee59c3d0862e7d51d6c77bbefc0923ebab6c4ad49. 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/GX38U2203191.
Encararte / Fui feliz / Hoy aprendi (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa58b59c73730c961b13e0792571698d8917ec216279b1e0c42b9aabf36c782. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:59Z), 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/GX3HH2391690.