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 0x62bde1fbdf9344ca72792e583c4daa375d159aa24eb40f43a4ab563fc93c84b1. 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/eef5fcdf-d548-4034-973c-e78cd2b5a004.json and https://artists.proofprofile.net/proofs/artist/eef5fcdf-d548-4034-973c-e78cd2b5a004.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 0x81031ad03b1989cf599d7e31b83ebf2cd33686613dcb9e30a986981b591f46fc. 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/DEZN62100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df034b9d2e542f532ccb5cadfff6e43b101345c63ee7926ed8182b36d09a4b3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:15Z), 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/DEZN62100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c19fa319364f7e5620809606d36c046e6a4a0723d9dbdf6773a3cdfdeab3334. 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/DEZN62100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f62def8137862100a05015832dda06ef18a585b25cc9c4fb22dce6bbec0372. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/DEZN62100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e8167296123b4d5442e902e67083466ada82b8f6819bacff7941728474258c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:46Z), 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/DEZN62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845e6ce36ab1e1757e0564549b9f3cceb3015ddefea1a94a531c9a501634efdd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZN62100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03efa4e093a32b3aab64de03d7aa74335c56ea706f11e6402fdddd1990429dac. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DEZN62100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ba5b52b6fb1f1b8ae56fe33673d3ca1334a19beed3bf34e3bd1325188b9bf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEZN62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5ea144971078c4d193366a7cd6956e681636d772fe54aea57f3d99770f8645. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEZN62100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e14038302647bfcc6532aa6721786716b5cfa0250db1cd87897dde89510a7. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DEZN62100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65468bfeb54242a78750a26e6283fe2568e4ede9a59b424bf6e44558205c259e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:15:39Z), 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/DEZN62100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01304edb9b58949ade4f3c722aa290945323e4d3ccbaf31451962fcfc76e6d48. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:33:06Z), 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/DEZN62100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a22c3702c1028d21e2c559b71e777854b96bed240edcbe1f98f5f498bc0916. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZN62100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb1e07a0e38f8282fec01d84251d7d673c62934a286be21c20cde2f180e9b95. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEZN62100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5223b659f7d69b877d888719079242be1e90afcd466e277d5772f480ab8882. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEZN62100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1940b3b4f49a90f2c60701744a0ab4dcd1d924adf907dcee4d7aaaadfebfb0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZN62100019.