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 0xf4b9adca15fbcef94c65c5b4dfc45f8fb1f426a0b3e9d5cac8a75ef772cd45c9. 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/1eaba2f4-0c49-476b-be83-7311f3d512e0.json and https://artists.proofprofile.net/proofs/artist/1eaba2f4-0c49-476b-be83-7311f3d512e0.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 0x69aeba7aa838e29b0d92dfcac7add15cc3805035c374e33fdcecf4817509e838. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEZC62164777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5749fe10725a206d7e4b8fd9970d5c511612b644a808aa3acd4735a5b5f58409. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEZC62164778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce569a2adfa01a918a72d319f5825d19cec7768d1cbd1f95bbcfb2ac8421b06. 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/DEZC62164779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08c7400b6327359a7d52feb44de185a170caba8a5145ff2c1427ddf0f893a1d. 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/DEZC62164783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0e40fdf816dc91fffd34deac8e57d8012b1cd96ee23bff45533a164b68c46e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEZC62164785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c458333234a74f846ab9e8030436abd103352b5373a53522e5cee1036138da4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DEZC62164786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a124f58bbb555aafce5e1ef3b3c09c408a67e39371e78ab58beb3a531dd47. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DEZC62349536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d1d2605f63c4094c31b2211c810b5e9fb44d38126e091d92f2ab417f281893. 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/DEZC62342441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615577b126f3e8926756fe6148e0c07e3a056597799faf12bf778c40d49ba49e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:08Z), 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/DEZC62353664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532ad7b876229d30de11b9559b97be039a99f90cde21adc4b098bd7e8af27fea. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZC62217456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a99aaaa682750257dcd7d96dbf8b2684df32e4883999c4c06e522b815883441. 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/DEZC62323450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d302071472d66a6d4acde56979befd02b8aa825b305a0d2bdaa275938b8aaec. 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/DEZC62364234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a30679756aa12c4da93c74d2e8af6a1327b56f665ff2cce58323861f428f835. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEZC62353666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b65f971df7d1652c5bbdc7e9cd8fa86b488be801f1046603aa6b22b48b878ed. 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/DEZC62330744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee8c4e72207f2c374ac2952003c03afc7510e1de7bc9b178b60aa9f60b45755. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEZC62457965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca18987e4088abbe9604e3b4915e8e85f1b3f383b7b041cced8bfb641e251b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:35Z), 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/DEZC62457968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fefd76dd636ae74e9160e50e343a3827adcb749ac0f47ccbbafc67b4ce2b228. 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/DEZC62457971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9115250cb314ec8b4abb4b48ff8e6b16c16cd6af868104aa261613f6a9277c7f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZC62457607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1fee3b2689f7e4e25f74b84579d1c1d56c9fa4d1e7335081d9cbe0e0aeb8fa. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:24Z), 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/DEZC62451997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3838c1fb54b18268c0723b217673ec24f7b7da2e6287e6547a1513cd56f356a4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEZC62457970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169b45b9e1447f4a43ab563224393a706568d28b8fdb5b6561d1742fac020ef3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEZC62457974.