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 0xf680dfe2044064d1e20d1ab462a0df251611b63b607e2872524473d753be8a3e. 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/efba587b-7031-4c9b-a2d8-99c9de3e07fd.json and https://artists.proofprofile.net/proofs/artist/efba587b-7031-4c9b-a2d8-99c9de3e07fd.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 0x1bf492008bbd7eaefca75e5cf5b271e710c374fa7611cd434c59b74c78494a37. 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/FR6F31601570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7df6148acf6b8fb132211c6641d15f1279ee65380fdd364d760f5e55b9aa0f7. 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/USFP71657602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81085ffe5ed4fccce0747cbcdb91043fd78f2b00480e7647e2603d35e9991935. 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/FR9W11605356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3dd020ed18f32270b11c6ccbd2989394fab26e602bfde1b8261f2f274f6392. 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/USYAH1600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1ee9c7c32fb58ead08d9bde69c6e565fed55791cb4a0115cb0ad62e943584. 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/FR05P1600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548e470fb9bc6761867791154d020d6e1664f5a45b65897c7e91cdbcafb2da72. 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/UKFBV1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d108882d05f5808c8a01b9dc2f3b2220d3bd4eae70810da657067e933c7fdb. 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/FR2FD1600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5955fd91a06d21ad3d55e62fc9c7d268c6b55c13370c7ac0b6edd8bc58d85e75. 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/GBLZC1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c39a2fe020f33a7eb13210fc9820d7cc14d844a6271f37f3ad10c6d855b7b69. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX871531509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4373dcd20a0a1e47c99bb00fdfbdf422faad1d82163bb7dd935e060e43cbcf. 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/USD8D1634005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a08b2f84de7c427f8f7db5fb7409bff56775a36451bb5bb0cef7925e2164ee. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR1Z41600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6788b70f720cfd584b1ac411636e6a9f6928a3e939255b494c3563a070a8c. 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/DESY21400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e59b0e5a6aa05eb977cb95dab31f37e5a5e91e3984e55da67f3b3b5d2e8c150. 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/GBCFB1600808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61040c26cfc2c941abd384f726c4695c4c3c4d8be46a97bb10458455df6435dc. 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/US4GZ1604207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f4a362a88348fe35e5c4356cf2b1f00c14ad46a41bce26d94fcfdb46ef8920. 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/USBQU1500717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f760874024d6deebf09b18d60395cf19246e1c7837826990a3ac6ef40c2cf3. 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/US2S71673002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8009535e3e1129f3cb7e70e1eac20d4c3f50b29e139efe14d009e07c2d9935c. 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/QMQQH1607489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569d27b23939e4ed6951c682e4991b2dbbebc1f6282285ca97d6f30532afbae3. 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/FR6F31600470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7151d31153dab64c75a8763e5b9e0674344c86cb0b80c147e82f5ea12ef51198. 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/GBUQH1500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495fc35e334a6d0434f77e229d98de05d3b41faf493100a4f47ecd1953ce4ed1. 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/GBKPL1665994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5ce27127b5d2030b2bc5ea8a0531a46c53c7833a7d3541e9bfe8ea88663b52. 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/GBGLW1500372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851fb3d1910eaf83abb2ec03793bb87db3935917bfac91d475afc6b3aaa87422. 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/FRX621996010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd1230cdd20c0aa9c58be48853c0119184559f3a91218dfee428325afe527e1. 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/FRX622122040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac63c6b2ce154d7c789cc3c250a8ef737751657ec83796cadf12819996d9d6d8. 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/FRX622122050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd6ca121e62048347391ea70a455aa78f777ceec64c932436498a0b801f141. 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/FRX622122060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c668e37c833673e6338464cacb936968e57879083be635d001609aa45e5988e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:32:06Z), 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/FRX622122070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141a3b7005d4d2ce0e54555dcfbad6d2ca9cd707acfe772d55537b5b27ae03a9. 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/FRX622122090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da2ac5ed1752e00727470924369ba8dfb9ba91a84eddc7d5eac0070224d2723. 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/FRX622122100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81085ffe5ed4fccce0747cbcdb91043fd78f2b00480e7647e2603d35e9991935. 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/FR9W11605356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de7f69372aa7164cd0eea8ccf5e9350aa985a52df20887a30dce3246af4aa10. 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/FR9W11302081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0837134eb320ca85c9e0dccaec4b96baf6c0b86312b0cbf337c90f6bfcd388ec. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FR9W11302083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99178a015b7a44cf145b93fbff8a7e5af32e497fc553f2c926824e1bb2b6c1b. 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/FR9W11302086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ec25b9c36f212c465347c6527f25b6cabd3344aad9010ec7fb152feb5ccd7b. 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/FR9W11302088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cb866dd8528fcb6115eeb6cc440dc7ba7f881752a595d8232c4369c3c86c87. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12433560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4342c2973a2572882f6bac5f42f2402ac455ad4da16c863b9c3bf66b213736. 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/FR9W12342206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6978b3d7a2010940aedaed83c494a7678b81c38f41bf49bba6a7bf27c336eccf. 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/FR9W12342207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4342c2973a2572882f6bac5f42f2402ac455ad4da16c863b9c3bf66b213736. 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/FR9W12342206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0342f17bb2db6f4a654537328d4bf79c84f88e1fc4d530806d2eb1cd0d1963e1. 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/FRX622411010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45330770923685c36de7319cd58532b6e6ebf1ba4639023da8a28ee14580f1ac. 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/FRX621996020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ed12c6565d78e3444fb9ef6ee32c85f0aea15a48ef8bb7e3c10084f7c4a9e. 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/FRX621996030.