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 0x197179c5fb58c9f6d218fdfe3c96b711dd5946900767b814bf0235d2c606c38e. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12c6ff60-6a8b-47be-957c-e21a12882245.json and https://artists.proofprofile.net/proofs/artist/12c6ff60-6a8b-47be-957c-e21a12882245.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 0x28a19c25814738a64441d0a58d9b7d4172f9c4f0c7904b2be9e6b8900e9bb460. 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/GXH2J2585835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0fa18e8daf149ec617128a4f06e333eb96012dc8d0c7a402fe1225bbc5d6f7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXH2J2585837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4af6675a6141f406c4c8bfee65b5a98d00f0e1df9a1a4ddc12a5818aedd0d6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:10Z), 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/GXH2J2585838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63153ef519bbda96ca08e681fb101b3407db2c19dc42753bfb8b6b4c6e197a8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:44Z), 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/GXHAF2526625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3f3efb89a97d48ce747cfe24b650d46464272d85747c5ba8ec3a6c60b4799. 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/GXHAF2526627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc2c62a9a4e495347b825d66f02013bae4c3dbd77020b2a2e963d85c0774b69. 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/GXHAF2526628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb394e78e4fa72ee24668f1945ee9a4858d3bdc0a0abec05556bd756cebc6d8b. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:47:57Z), 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/GXHAF2526630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a2c6b72084b6edfb7f1b7d766f5fba9281b765b7472b896d764c369fcf3181. 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/GXHAF2526631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b21e4911ff82349d0803ab9869a87d57d83d231a86bbc564fc6915655a90f7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHAF2526936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76084ca8109c6f3c13edd832cbcc97dc62186271833ef63c0574d9225abfd649. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXHAF2526937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e178eb45dc0da30f478d8d3e57df0e52a91494fb10a70a5819f8c179f70aa61. 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/GXHAF2526938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb5eba2cbca8378843a7e84d0415be8733305764b3b6dd114bb360bfd1420cd. 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/GXHAF2583771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746fc7cf57487d66e1f6466d5605280235f6f01b891b0a2e4fbfe0867f72bb97. 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/GXHAF2583772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d890dc7d74ed53c718d574f19b5489f482e4540a124688df407119da739c101. 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/GXHAF2583773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bc0ddfa0f9410f6adf22c8d5a0a0e4c0ad5e5d1130ebe53083178c7a0a8215. 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/GXHAF2583774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30de58e6c0d6661cadd656a01a9ebd78ff03e04ed7b1acc4d556eb3ffa5901. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GXHAF2583775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c7ce648dbc6ac771e0d9f7dd44588247bf397879b16d33e2214299a59ac441. 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/GXHAF2583776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c0c42e988666afcc5b0c96cc226a5dd06f1c6a9814c2f3d1e76b8d9b545c6b. 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/GXHAF2592279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d7b8feb04cb4c06cda022482163a291cf772924131754e2e26735618f878f6. 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/GXHAF2592868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaf6ed4b6c83e86cc3367ada0d4171fe75eeb5827aa602b741e155271483a33. 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/GXHAF2592869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6593a48b11c42397d1051f3f6fc9ed54847df9bc6fd2507ce065b06d3819b54. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:28:31Z), 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/GXHAF2592870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b692cdc94ff5a9a96ed820367036e50dec00307ce9891166a1a1953c84a06b. 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/GXHAF2592871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601c665b57bb2f8e9d37d406943ac6a08c5741b2b953870305dda9dd962bbb0. 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/GXHAF2592872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e9344510fd26a199dfb8b9d21eb0d01b43da1a6392e83ccf7d04f7dcb24500. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:13Z), 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/GXHAF2592873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631a5450ea172debffd054b165d4070ca4c465475b72c54933d5fb382d2a850. 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/GXHAF2592875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a8420dc8dd3a944877fb9b92a27344e62f346fcd76cc92d812fa2fec667224. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXHAF2592876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0610649041d450ec209131db520d0578d65253c43b8ef999a53a09b8be043. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GXHAF2592877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca2c3b2b3862a8ed1dbcc05941cbf1f712af85cb5aea559d7d8990a27e930d. 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/GXHAF2592920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f92604cff4d120996e44e0519022f419ac4684b9d43f93da25c66b0598cfad. 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/GXHG92555471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d55dd9d2e95c79a732a4097668969659566628237cd2140bd24c2d2ba40b11. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXHG92567986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe31f39c6be22a11040c73553b1a690799c1b3ffc24f2c938c70ffdf9ac783ea. 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/GXHG92567987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ba2e922ee60a24d227be82250be76185742ef477d7a23f9148bd86a6bb613. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:26:50Z), 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/GXHG92568537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cf5cac60d4bc852fab427d5421980aeb6bd6b5dbbdbc13db928c148c816038. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXHG92568538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aff85f9ecbcfbb25e66b9aeb6c4a5933d0cddcb974bf2310869269fc67522eb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXHG92568539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f560d63b387fe28441fbc24f9f37375647c0f549df3915a2b116042817d4454. 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/GXHG92568540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0324eb7dbc97a35a79e6c644946acbcb674b8a38d591c5b6542b54b827c9fb. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXHG92568541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6036a030d122bcef59514bb560ea4fa250822575bab334f57ff61d3c6d6b63be. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXHG92568542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9495043859e404fb84644c404205d47cf9b49371714b3fe2ec6e2096f654e170. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:02Z), 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/GXHG92568543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b59f44dd7a7ca187b8377671110fbfb965eff9c7ddc160727d8d35e83c1f72. 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/GXHG92568544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6a122bf99e9f17c355b919fb14237bae431da89c613668388a1e336e0d078. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GXHG92568545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb42ac4c62add945488be480422cffd744a94d55777672faeffa065f8cc05e06. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXHG92568546.