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 0x295b5cc39fb70e17074e166c0ca8e8956f7b249510322e3af83964ab324abc46. 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/68c94e95-acba-42e7-b833-9c272660caba.json and https://artists.proofprofile.net/proofs/artist/68c94e95-acba-42e7-b833-9c272660caba.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 0xac5081845fc3e038e891d2472cdb7a18ea82e3b02c46d0e5a776ae32575893d1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:37Z), 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/QZDA51875366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466f16f6465a97679707f58392d22fb308f9d8213066171e71e7a0fdcd943ae4. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZDA61937695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8dcaef325a40b01764a440447e9916b7cfa0857d5db9b187bb85a8e830934. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYW1980871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fe2deb5a2211517bdf3eb154231e440ab4040d911c885d708dd3e788b7a6aa. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZFZ41942650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75618ea85658fed51e2daf2394457f89d74c359f36e22f46493ac15d0b3b73e4. 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/QZFZ41942651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a56a9a56afda6469e3bcef97e5fde515d522445cce8236b3e783b18426d2638. 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/QZFZ41942653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d134c48c42666120eed5bd54fc304f593a2d337026993469e6f0aa48e6a2ed6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ41942654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d5bc98088c2919a4012e1382bf52f886528204158229337017ffb0a1609ade. 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/QZFZ71980415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b423651065b7949d4253b24927200f2f1da319051dd6b54b6d73ba839c5b71d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:49:45Z), 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/QZFZ71980417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedad0416339f636ffc6026893e2bd27267d2e60de80703f6d16dee3593ea0dbf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZFZ71980419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f924a3c971d92084131d2ac75ca46fd04fdf7866829ac4177a653ea8de56a06. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ71980420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691a7e1135fd236cd7a478ea42325a0288d837c52ad8457554dfe242164c0907. 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/QZFZ71980421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e9bc063f599e0da857b99a169908556a1c72a654e5103c5bd966b287e516db. 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/QZHN71953092.
Flowers on a Gloomy Day. (Original Short Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88bc354d81817b73f05d871a2217de2e1d350987480d5bf761295e5bbe0fbf1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNB2102966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7196ccb4f71b03e00fb80350eec2c9969a44e6f52307ee9012dcc15baf8aae7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZMEN2210353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb3d8293d4dd7dfa1a9409a82da8efa272ab376f033b044b130282c75a2ce0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTBA2345508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654483e53df6cbd46a0ed8fa29841e35d42b20b0b24c487e2beabbd8c98852e5. 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/QZFZ32518671.