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 0xe3cdc6393dd320a0066ec99b2a683b7269967c3cabf37ea70ce2b9f34f025238. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38e75079-a02a-4560-8d20-4a55d439b7d1.json and https://artists.proofprofile.net/proofs/artist/38e75079-a02a-4560-8d20-4a55d439b7d1.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 0x3bef510e7768a6ed4309fcbf054e6a4353d135cfb800c3eb8ecc39b3c1fdb264. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCABY1439462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44c561e90763d2485f4484ece47388f7de627bec7dcd61c1815ddc6a2f60186. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCABY1439466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eae24935023bb55f5e363ae38d4c7fce4e6893afbe3cb32ae5e448769011a5e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCABY1439470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26c152d0b6ffa694966176ce07820eb40a89b1d19fc9c9933928ab04a5302ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCABY1439471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759003a39b563ee14c93dc36992d0c5881b9d8ebc9449d4d8254fd882411850f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABY1439473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400db442e77a2cb80d3d8946888aa32685f75e5dc340c69332639f76a255091a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCABY1439482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fd43728b4e643239a98df70b88a9231550510fde9aa481f474a7f65f7f1f4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PTNS11800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714c4f11abbf4b988fb0f198afa5c6524907d884d5ca2bf89cf71e6f3f9e6d34. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PTNS11800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38218566a68a0bee924b16fe9a6e25f2d9196afc3697ff2c037b6770170780b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PT2HA1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793937511d90b104580cd55e35a1f80c24493253252601ff925c4f1b48d1ae59. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PTNS11800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67702a616d959e32c0bdb14ad2b12a4b24f3f80be15ba787d6465b37c3b86925. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PTNS11800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa96ec55778aded0e0ef0e67fa58a2055de91e921e43eef2c649d33270697e8d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PTNS11800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdaecc48f6ef44aeb7cb5b7f0c7b4e26859868fb233937ce40066ea94b5c9b4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PTNS11800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e5ff5de69746a35f33ab6c7ae51252507d6402694fc88687bcde8cda7e4c24. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PTNS11800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de12d6310c280cd3d44cef27dbbb3a37155af33ca959f5cc62b75b589bb066. 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/PTNS11800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaae06a94e816f4320de4fee6497fdc58731f4cec1b8b825fe692834394c1e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PTNS11800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a6d062480e8dddf2f7dba22b243c61d494c25c485440a8dbc321b9cd836bc6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PTNS11800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2473825c7b955e10329205ebdc0018a592ca73833ed6da0747f60bde612ecdc6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PTNS11800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc103afaeebfb830a27b3bc437878c3ab6216ff1d98fea28b8ca841ef9e466eeb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PTNS11800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd310207bfc1edf4ea6e820189cffbb615d279cc2a59051bdc76e70a360804719. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PTNS11800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd1a464a24e44bfab511e2d10a88fa29e3c14b1523405c06b852d4efb2d8538. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PTNS11800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad25443d9de334d0de6d4daf46eae8271d7a7d9b3bea14d7935fab1a6c027aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PT3KV2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131537477fafca1cc13bfef7fd8c27e34ff7df0d42344d74d85d95177d8f3a93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PT3KV2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb35551ab9eff8c320eeef04143d598df942f9305db81a4e21fd17dea6163053. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PT3KV2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d30aeb4cff896315ad65b8d96007b01e5e0568294b1eda4911a6804a0b4963. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT3KV2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71322d02e597db8025a9b04539e78cbb87888fa23bbbb0265d705b3e6921142a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PT3KV2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61952d1449291865454a87db00f8b9847385460a42487ae88ffe608951d8ccf2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/PT3KV2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a60e3a4ba68e98d43a70002ba7368649d5d7ba7cef18514c76eea393a60fe. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/PT3KV2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d49eb6f263763c965f8eb249a7ccc4a7f26ff47998d94b9b06a3520cfc232. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/PT3KV2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd1ded40f0ec351d0c3824459e0db6ef463ccaaf31b19797430f1f550234d5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/PT3KV2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c42a244b97a89296471171a7b7053320c44dd41c052849b49562cc2f7a917c8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52479964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efdb1f0dbb85b629304cb19b299c9441fd7ef5816225f8e9d901c3cdc8f7f86. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6MZ1784940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9678dcc2e011d617ee821e1952df7f31aaf1985033f406ae25b3926321d1e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6MZ1784943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4706c01226b4e7ae04d16b9201a99606f890fc87e3589baf1e3b7bfcac00a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6MZ1784944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bc7bc468543b033bc0907f51e3a38b63b6a86298ef0df6404b6176b1db8d1a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6MZ1784948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35e1d04e3271cf1d4011c93df56651bcbaf4d949dc01712037030764ff3cd64. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PT3KV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78adc83befa6264620c341a2290bf1c6dc0bcbf212b768bd43de934d261669f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PT3KV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140a47a12e69439e0468e0f40c6cce4239a362a43d0eb4281c859a6fe50ef9bb. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/PT3KV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4cc939cebdfdc63661d3a181de5f79ec0ce5ebad879ffc894dbbee76c946d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKB2J2002103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800731b14286f921d5d1719f0ae501633d045753b889710412d855a510d3b49. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DKB2J2002101.