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 0xdd37e93d8c386afe5232255d572756b4610a657ce1c25c4b0c62a8eae1d1d784. 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/9a40d2ed-289b-42b5-8328-e47471a487cb.json and https://artists.proofprofile.net/proofs/artist/9a40d2ed-289b-42b5-8328-e47471a487cb.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 0x3db02ed355395d9104d95d5d4e85e57eafe118219261b08b535f06b2ab9d8e88. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAB391802196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4adff95e61f4adad285fbde803c9787e581ccf2e81a9b266ea351860de96d82. 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/CAB391802197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc876064ddfa948a2c957309d081120b936d3650d0195ceeb7613409c6698ee6b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:07:10Z), 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/CAB391802199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62291159f026313cf93985f17a28d4f2cc1a944ff923ebb76ee377f960f5f967. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCAEZ2074700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27b5fa94a41a786f046b9f5dd9105489f8c8c8c06824c50d3630d1e784089d1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/TCAFC2075681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95ba444f8b59dc1facd2cd64729c55baf669fef718bb2bba1d5e42858a1a3ee. 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/TCAFP2106483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e24ac29ead80886f2ee0abe68c5c5c300160f2c1a982d2b41f03f81a53de11. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:55:56Z), 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/TCAFS2154289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dd7fea095f9d75bd2dfded016fec706d2e349a306ed18ae6d755ba0406146f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCAGW2319040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c5cf4c2b121e169bc86f59c59fc6c3030153dffb5e0f4be7be19cb6f9ffb04. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:51Z), 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/TCAGW2392883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffff019d721cea6fe6430786cc9b737119419420acda8c377a8174928c5f816. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAHL2350574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ca64c3ff9206f061bd544aec6badfe9dfb325e86b94ab0c480177293dbc942. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIK2479357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde3386b7944f8b0f08c94c289024673866930de3d6e8e6bc86ac16ec03b96b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJH2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231a3871a262a57b2529bb1bcaca2ea42d3e042db4574260c50af1902726d4cb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJO2530052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21c78edcade08ee3ea8dd3563f86e3e6316b9dad9435aa589c62b5302cde159. 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/TCAJQ2540962.
I’ll Be Right Here (My Life with the Walter Boys)