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 0xfd790be014397a8430df9c080cb05e29d3023979083ecccbcdea4e2db20db58d. 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/9e27aa74-b0b7-4e03-a9bf-ee6277e78176.json and https://artists.proofprofile.net/proofs/artist/9e27aa74-b0b7-4e03-a9bf-ee6277e78176.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 0xd1a7c4e0fef1d06e472eff35ef2660c8c6a855c12793f7f654e7b613f5b967c9. 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/GBSMU5896326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a9152a6a1b7ada3879d88da35d8eec4c004e063b0c53d764bc7e4300d85da9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:34Z), 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/GBSMU5896329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431e1bb8c43bbc43d53899b3ffe8e63cde236e02b5be48f009b9c025472b9de. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU5944247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a78728db808713e91d091f5d6d151cdfde71decf95a64e51fbd8a7d34a1cc4. 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/GBSMU5944249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13fa63b63d635a575db39a929191e23bf9008bddf675637e3c7132d3bc733d0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU5944251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6d5c1a072ac9ffcc0d775c1e3543f67522cb107ed855b919840be14b1df639. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/SE6SA2013397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb5f9f753f4e43f3bef58077e16190dc28735d47a8a66e99979b89e265ea3b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:33Z), 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/SE6SA2013380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ef16704bb3c0705cc85e5ed1869a590a53b2da4881ca76dab81d1a509a04c1. 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/SE5752166538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8156ab0f064f94f19fdc750bc9525df2bb32e4da5ed69dd2fa8a5abb8c74bc5. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:04:28Z), 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/SE6A92100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7707555370c66b23728c4852908477e544b2770b1e037b878b05400adab919b9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:47Z), 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/SE6XX2161508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79064de3bdfee63f5f1e8e00008ae9600542a9cfc485b7b90cc5515adfee7171. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6XX2161511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4ead1aa4b72706fd77413ed26606cd9064f73df8fb67ae097f92d782689b4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6XX2161513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7129b98d00a8f39f703ac56af812dd9aef547662e167878a1cd89168eb41b9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:41Z), 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/SE6XX2161520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0006b005d8ac7ba2d40b72087b36240c113b1c589eb0171b0b19196fddc5c8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6XW2200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd221d5d1e4e005c6817ddf9338d0373e6f650ed7dc14fd4b9a11d228a623f7f8. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SE6XW2200670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4f49f1ac400130b6f55808e722317d767866ba18a1289ea4d240bf2514381. 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/TCAHX2473286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75c7a4e988c32a4b0f42efaa6ec4aeb61bc05239a10b72bb225771331089045. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:12:25Z), 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/TCAHX2473298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c662af5931cc745ea5c44de04ce161a24392b08a46deb61852449bb08a56dee. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:49Z), 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/TCAHX2473315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b880d2bad26935fc67eafb308d2f25122d3a17e030d514762854e2f9f3f1b. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/TCAHX2473338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20106c3b5168bbce942e8c17d157dbcd2d06088f875953799127a87de843c69. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:01Z), 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/TCAIG2492231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d6bb30cdbb288b114af37e6af57f4cae1e449a1ea2b57e2a120760e6fd9dac. 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/TCAIL2400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb196b847e005a63a644298b6329fef9e6d88a6c73a2525ba5b8dfd2da02b0fb3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJP2580056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b20c7f6c1817f71915bf88cf3fea2c748e1884ac5d2739493febbd4ca4938b8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAJT2534062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b9081d90fc2a5e748f547b282d3b89555aaf725371a9572fb02a3f4ef2f01. 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/QT65X2546305.