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 0x77e2633db12c9470d47f17c4ac3d5286544fed0ccdb7fda765eeda7867a7f738. 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/0a9edfa0-1251-469c-b863-c7768d8ef75e.json and https://artists.proofprofile.net/proofs/artist/0a9edfa0-1251-469c-b863-c7768d8ef75e.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 0xd57e69fdc9158c022534f390319de685ed15cf435226fb69b3ed3d6e4a042d38. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ972403032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c854f1c00046efd62601606269a387f55a9b9348919fc3f4fc507cd7a2bdc1. 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/QZZ972403038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4142aa5630013eeb7260d7bd5a52fe456d3c148d998c25ef5a2cf7a0157ca2f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZZ972403041.
Vieja Escuela Vo1 Dj Cut Mix (Dj Cut Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acc6158f771b65c3a705528e5bbaf77280e28babd03f0ed5cf28c01b4272a13. 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/ESA012476532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd301edf335d2e1db5ee1fa990d17efa30de233d3751f37b7b749d36323454b26. 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/ESA012476535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd6d92227521a7af35ed19249233f2f84a55faf80423f4026c33038d3efad71. 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/ESA012476529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab033f4f839f586f53df0bb90f904e2d6d47e268b1a8e4d7032612bd1ee6001f. 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/ESA012476530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70ee3e95db1f5c10674c0d53cef340bb424651e20ac517e6551f0cb4fcaa471. 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/ESA012476544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5b9eb2be1a7adf484835e8894f62b5e09e2333c02bfb18c55c23b101413fed. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ESA012476545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb143d9e761fdae34cd09e4c55ac9c190bd007cd902f972890e37d16f3fcd866a. 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/ESA012476547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0b4b547a160c3c09df198107b44069378455473872e60be5224af6b2bdb2fd. 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/ESA012476540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d5f2d528935b5a09261ff563622d1faef0b3aff915fd03308f1d5f716910e1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ESA012574194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a527803345ba52f53855be11ea0ef021f40a6f43283651ce4eebc0007bfa3. 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/ESA012587661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016a4537643e0d13b196d13c73e97ed73d675493c39e12dc0e8a52aa4eaceedc. 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/ESA012587662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60851e86b6b2cd061d7e89c338718061d2d11dcdcf420447eb16c37bab9db2be. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:57Z), 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/ESA122503059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6961958d26a7c333a39b365ebb8980e036a57d885916169680b9a4f545e4f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:22:45Z), 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/ESA122510384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0d79ab2d65e004222f3ae3d2864361380bbb89ffcdfbd44f7fb7bcc71e8a58. 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/ESA122528171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c946dccf31322edce573ea1832b961de25c9b0e64a8428610b626509f14bed. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:21Z), 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/ESA122532480.