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 0x1e5e7aa8d0082a5f428cb9c770d351aaa9f022ebdb764ac08f59261ec45ebeea. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14943b2e-393f-4a78-a822-f286d9563b02.json and https://artists.proofprofile.net/proofs/artist/14943b2e-393f-4a78-a822-f286d9563b02.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 0x99ca23e9f46e883c25ca4283496e57fcf0562177d5dcfe300f935dc9e87c1232. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:41Z), 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/NL8RL2520481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b9105ecce96b1ea1e4d699c73ffa18b43608124027cdc1caee6b69d1f515c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:45:33Z), 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/NL8RL2520482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760f178c04a9faaba8c27bd1488f286af257bf159a1ac5e0ad9d41bc7740da68. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/NL8RL2520484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11e4afa432179fc11b5bf6a30eca59a6f0ef7c99ec10cdfe0892e0060696b9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL8RL2520494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369c6143bd8600bd674aa3abde1dc86c01cff637c4134d7669d1440ff661696a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:32Z), 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/NL8RL2520495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5974b8e56e4ed8cc9b0c1959b0947564eab90f0d2d0d9179ee6a8f79db3f91f1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/NL8RL2435050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa9a99d5fabdfed534a48c21403dc4d2ae72576452aec77f0d30b0e385e500c. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/NL8RL2435051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5208c05127e2465d5805a6ee6e55e4f6b9954dccc8d245619c81a554cf26fac2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NL8RL2435052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77da7766d8023632a0837a4fb82301905d7b8073095445cc3c173d8ea7a6699c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NL8RL2435053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004cb00050a23a27da8b5dac26b27d2d433e773c54f1919118db4e3d4b810e4b. 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/NL8RL2435054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc38dbaa05cddd281d53fe9373fdb40bdae981f28a1696fea88a3be0ce069020. 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/NL8RL2435055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef8f93d62400738b4ecc1b058263bc1c2968df7730b3a348e2cc841e6c7344. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NL8RL2435058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e844607cf4792c677e159604e6c85c900dbcff596d53c94926a78e3f00b44. 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/NL8RL2435059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d52fea1c74f68569cf37d85b3fb078447b9f8ae666c251bbcdff40f78a868. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NL8RL2435064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dda2ac60e5369dd2da498d259bc67599dc6dca5863a9413ffce8dd1dd4efe34. 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/NL8RL2435066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb3b34c8bbeb129497d2f6356195ed943b33aae0647fa5b804f2d7c0f2453db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL8RL2435068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b779504030a59c5121d0d8fdb4f44cf45c191677d382319f7a022d7678ee3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:35:33Z), 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/NL8RL2435071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9de35bd376050997272c4ce3d095b695a7ec0600fd753792d4e8e2133c6a7b6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL8RL2433179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c78c9d217fcd9799f40d41626d2a6bc59c8e1eaed47bbd155bef63c6b11976. 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/NL8RL2433189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a3aa46f3d536344210963c9495f70ec1ee15603d2c23a9b0759867137e56d4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NL8RL2433213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d55d051cf4cb4a7375997c2daae117dd2f5ce6d79a2b81b8c17154699d8a6. 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/NL8RL2433233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06fa0509d879fe89dd3bf222331f91691d91430ac760e58124b1e92ac3b3452. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NL8RL2433251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5299b8212ca754aea3a917cd41e99bac0618836e69ba06d41ec8678f3dcfa0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NL8RL2433316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9015280a28c9797af6817560a6e10d1f0fd9b2d171b1df996f0b55503a239e0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/NL8RL2433319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc544d3fa5158f646853dff7184642dbcb295ae4d369f69ffa692b436ce048aeb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:06Z), 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/NL8RL2433327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cb1907625f0510159c0cf3b4697fecd14f4f6a45594051916239a4c7149499. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/NL8RL2433330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9f53547b868265d9322fd796263eaa4399a470b95dc600bc469b30161802e4. 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/NL8RL2457663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe664317a9ab8c7af174a5bf835a2c8a9d99e99e6f5d18519dd3a0a8c68d3b0e5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:21Z), 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/NL8RL2457670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7d0b2167c1f479dd3df77fe45f91462d953f92e9ff9cfa50e5aff00b35ec6d. 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/NL8RL2457705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb56c860c1cd1f0e657aa560458e9b3cbb02c4162c66f4c28f8e4750eca94b6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:33Z), 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/NL8RL2457707.