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 0xedab9e2eddbc1c87c148ed9b14c150aa1f256ea48d59018a75857175d8ee4196. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e21eea09-25d2-48c5-9c7b-096f3adbf4df.json and https://artists.proofprofile.net/proofs/artist/e21eea09-25d2-48c5-9c7b-096f3adbf4df.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 0x2169e4d97dbdc1391572e5f843cef210555bfb2e2c3a2f4a4f7fb4b3877691a7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SE62M2270055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d003b29534c47b33f07adbb60353400311e12883b83cd2cf8ab8d7c8d22d60b. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:41:21Z), 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/SE62M2270056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf2d97488e41de50b5821cd1edb1f0ad80205b9b7735f077e746d9faed6581b. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SE62M2270059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e1b7c268a506eed102d3a6e389241ec1ea3e7d7ba6d79b76241cf0e9daaaa. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/SE62M2270061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e940add63d06183919a695224b25ad79d9411b85fe1d9a11db4aec88f01240. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:16Z), 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/SE62M2270062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71acc85d97c1c558073e297c520d40b1ee837463dbb9c61086bbe79253dec479. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE62M2270063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81268ce9ec037d10e6b9a90bc190403e077c79a1f83bebd60fb88be4aea12259. 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/SE62M2270066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008a9d5b8a135cf68399866798abe924dc61c82a9834de97190202a7481c3c0. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:58Z), 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/SE62M2270068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceaa2a85956426a64e1757be8533a3e5e5be48c41cbf694a3af1e6b85b952d0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SE62M2270069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afc49cbe061fc7a3aec4e5a0c238c613afe0febdc573ffb09f7096acae23334. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:26:50Z), 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/SE62M2270070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4e50e43069f00071f6d4c17c3d14824c8b626d16717d21320d0088053b5eb3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE66N2223314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575558b1c220b05660936b02977a7310060fd79a82be22496576673bb6abd38b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE66N2223315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad3a56bb2d4964682e459eddb5e1cb1969f04dc5b5eedce394fac446fa23b2d. 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/SE66N2223317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eefc7e5a82e2dbd80c9fbbe9a1960a37d91d4c5d76f80d7b4a30403ab4a4dac. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/SE66N2223319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd683471161b1b93c9d6234ffd2ab56235ebada9b3560b11339385fc6862110f2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SE66N2223321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cebd91be4ecccf7e8a04d2da7fed7c23c6869afdb813e15277b70868c23c5e8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE66N2223322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2996beb90195d7ae6c9dc9f0a900d63b1512b2f408728c028cbcbe52b589eaf5. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE66N2223323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710051ab7e5d60a3c578f31e6f1a53bc3d2b3382caa92df9f3b13841538e89df. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE66N2223324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ed5d930b646d586d7f3a693bb0040d5eec82ada435e2bf5a8dba4b7adaa81. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE66N2223325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa194c05d52b4e39021ec7a82202282c6edf7c75b15f6746f754ce6a8dee48e64. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:00:17Z), 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/SE66N2223328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4aa5991305032673bb058173155e82a756b262f5e9ee72bf5089122f419e5c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:46:28Z), 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/SE66N2223331.