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 0x212ca16169d60c611662d649b3f14e78e0f9023b73a5af639395a1eaf5f43fff. 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/ded76490-8348-400b-9ad6-76055f958482.json and https://artists.proofprofile.net/proofs/artist/ded76490-8348-400b-9ad6-76055f958482.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 0x1aa8205c3f0693fafacc6deb5fc3eeeab9111c35fee56d7b4bd1fc3858c19a12. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:59:11Z), 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/GX5MY2168092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adaf8783cb1356ca56c070a4f40f40fa41d21cc8f294bc4b401791c8f032f51. 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/GX89G2288098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895fbabf5e94bede252c0189929c1ee2a6ebf4ccac695e357c385f1f96d446f. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/GX8KD2252440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39240d188a95e2d903c44e52349d9b231ed091a7cb00782bb07c390bdd5bc053. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GX3HH2486892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dfda49af281ecd830cc988d5dbe14a8f3bf2b739fa4b6884c5a8d5de29c975. 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/GX5MX2412930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bba527c2f5acb9aa3e977cb9cf38cd408ac1077ff83768d7f76d6fc89bd973b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GX5MX2461029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56c7aa78d55537e9c6029f5983a772bbc31ad5a8812e9d760f579d085c5302f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX5MX2431777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf308a2d6b005e794f0332ea51085ab6b6736a4208e3488fee9a37f4b60563a29. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:35Z), 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/GX5MX2439522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05bf12f6128d6fd1e75b9d07c0e321a4b9a93868e8723bee918017ebdf08eee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX5MX2462611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5d23f12de6d8f78983fa50e423ed1583353442839cc875b72674ee925567fa. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:43:21Z), 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/GX4R52476975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584ada82d38992cc4cf7f75b665b081bccaf59b8ddebbb6b204993712d7a6925. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX5MY2420102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd64d04614f1c64392bded0ad1d7e73316205946d4dcdf6bb367a352985e677. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:10Z), 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/GXBDT2410611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd48858016e0f6a198b96d7df12539b5b2fa93941e15f8e02cc63fac9594251. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:11Z), 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/GXESV2443411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de89373bf6a7a65b2f15b09eb1206fca399a2491826f6192f4575edcfbb0c9e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXESV2409137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f9eb0106be4473ca4a8a1a9d0a5fdc240d5f4e3303f74b58e597b23ebb1a48. 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/GXESV2466298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4efab53e05d59d6697ee994aee4f07bf922365ceecec6324303db964a9ba35. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GXESV2418569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d571471ac5990b26c2ff6cb8f80fa950fe8ecffd2a3f69eb957a09afe54b19. 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/GXESV2464417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4be788f0d065ade7207471948582a0bb098f1b405cd26e53b4b3f86e202044c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:12Z), 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/GXESV2486034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0ea553c5c7d88bb48bf0d77d974304467dcb49c88d6df6a025af79f0226f4. 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/GXESV2438397.