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 0xdd9343a29c6b7f9b85c55701158026e2149b97ec8f36db7dfdd08e767cd2a362. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/554bd162-c876-484b-a9fd-95002fd98d0b.json and https://artists.proofprofile.net/proofs/artist/554bd162-c876-484b-a9fd-95002fd98d0b.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 0xa98dea1dfcdfe0d9916f7e3fbd1fc574f5e7b747f869e761b18e93f5a508c7b2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZHN62105448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6769df30ddb393fd5c6ddde353e84e483821523c7b30f4299e6a72240ce2b7a. 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/QZHN62105450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08cf858344eaaa2492348e58ed827540e77e0308245958ac4eb7085f6ed5c09. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZHN62105451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a13bc84af2a90068ab7323abf3a368f39176c9574180543972b50b55c25a749. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZHN62105452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67789c22b918d45f7ec6f80955ce52b5240061b1d56c88ef9d4c2c5803ab5372. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:12:25Z), 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/QZNWT2088825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972ed3fb17b0ff66acda7661d0dca0eea46470efc78a276212a55f911b10a960. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWU2155422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e232120774e70e10c04db77631f674614372aede3c9840618a7d0d120ecfa3d. 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/QZNWU2155424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7693d08a0c24133aafaefddc7dd907613ea76b753f8dd1926e1581837a7c8bcc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:06Z), 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/QZNWU2155425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ee3b6b6648b3ca5ce635a43b5b3a5e62a7bf09956947e66820b62b486cd927. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZNWU2155426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6d0fe905fd4126a6c7dc59ef50970d29a2021675a9f4f73f76d0fdcaf90599. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZTAY2265651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dfc4d6899db29d547f3600ea719fd2fd6250c5faedeb333d0b6f761ba0a461. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:22:27Z), 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/QZTAY2265656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bb50e8be81d76bf3cf792aa9b477be3532bd546aff0f6d0f5bc0dfd634ee86. 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/QZTAY2265660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39855758f60287d875b907f4f3fab803c8d3e561786951c944cdf35959c35e2e. 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/QZK6H2111347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa76c04d5b4112bfbd23e048a3a9e2e0a03dd7e812a7d9bc013727053926534. 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/QZHN32386835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16bf2414f1995f0d5a7fe2cdc06b3fdeb88ed2ea27e93c1a75c02e91dcd320b. 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/QZTAT2380317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7182e79b273cf83f23c3d8cf43025787f689c531a373392a2af8ec5d503de6. 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/QZTAT2380319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9a361f55c19099fd63312cb30ddd7675e3bae4cf87c12849b6ae4012d20eef. 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/QZTAT2380321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbae88dc18f146421b49bede54bb3f15e9b9fc892e0cb34bafa4ede5756f17fe. 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/QZK6H2497290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8b81af5a45f37056affa20f0cdc1f46128dd1a4c2aa238be132f1d4320e7f5. 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/QZZ772460982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba83967113ca0b771cdd8c5219c2639ca3454f3ce539ae89e18af2692a85129. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:05:45Z), 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/QZZ772460983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f59725690d48e5ed4ca0039969b86a940e93f3b56d248ec0bf04a10bdde91a1. 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/QZZ772460984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4975a748c11f40fbf544fc9ec01d522fecc1d9e1c83338169ff994c6e59c1c68. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:30Z), 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/QZZ772460985.