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 0xe8c6bff9ab0f1f94dd46378aa91bb3c50caab162db43fc5e4a3c5a03ffadc9e7. 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/de2e2a8f-a0f5-4f5a-a1d3-d0c24bf89f06.json and https://artists.proofprofile.net/proofs/artist/de2e2a8f-a0f5-4f5a-a1d3-d0c24bf89f06.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 0xb6781d8754f0c324f33234ff2b6691ef1311061871906a19db3e95edf85524d2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZXLZ2380287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a20cb70046f3be458341a67ee1c3daf0f01228ddd85b97a4f5f55306efaafb6. 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/QZYXP2348274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa864cc71b4b97bcef70f55d61d702d36e4a183bc24da62e0dfbdb10f66fc2fe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYXP2302750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b48b3dfe947361b4d074829ad9e0999b95e155edfbf133561ee05ba036e6e. 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/QZYXP2302751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5565f9bdb444e3f3e9e23104d290addd3c3e4a6126216f6023f02c174df671ad. 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/QZYXP2370584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01ce3bdbf56ffd2e5092ebe47d587f46d80dc37543cc7b0373e14575c7873df. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:42Z), 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/QZYXP2370586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78d6306a7b37150e08d12823a769ffc527a4433cff876516f81d54bd95d9736. 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/QZYXP2302781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4b204d5a803303b1c2b7d166e3e3066f41eba1ded7eb963fc2e1b8318809f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:59:54Z), 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/QZYXP2302788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fece665df7ab23934b6ac5703c27c709f8d662c36d5b34c6681640710a3d5f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYXP2323596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa9417a03cbdfa6dc6e728094ddb52bfbc55e3a28210a3c6e52dbde68716f6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZYXP2323597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc71fa0a34f124a5bfb30986f40745acccd50fb379fd4296af0a5fd71ca19e2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZYXP2322704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0fbb75765ec245e3adc300fc7b5b3a8bc2691aa7ed64367e89036caa50a4ad. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:03:34Z), 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/QZYXP2322705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f907fbc599c32d56bd934677d2826c7ea1cfba8a7cbdf41888ecdb0424055. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:22:26Z), 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/QZYXP2322711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85d78bb09ca4f224bef19e52f3f9265ca1509c019cc8732168b0e60c01bb7b3. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZYXP2357843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7c8c750659b45bc3077b1ac9e31085693e862f477ad3519775f91ac8d5ea75. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:10:57Z), 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/QZYXP2357844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ecfa9124b1ac359ae037674cb93ca831f9a56a01cb4995c05a737002adbf42. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZYXP2357846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a48c160050a3b07097f62f4ae7f0ddf88f303a7d1508902b5c8fba1580bff07. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZYXP2357847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ae4f19497afe585c962a369c343b11cd38547abf8fce2f6f6daf6d2193308c. 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/QZYXP2357850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a670b951bd57bf0dd5608bc3c6f4401a11da98bfc71eecc2881b34596ed60d4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZYXP2302762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bed3aad9658f5cebe007e438e3186897fec0addae7ad9ee72ed1117f43d2c54. 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/QZYXP2302764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33836e8e10ec5514c6a4f0d9a838c4539d202acf6a0c96443aa222c7766526d5. 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/QZYXP2302766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360748d6b3a5c17970caa0816163ac7bcae8d1c7a254ef0eef6c49b9933ce24e. 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/QZYXP2302793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4468336ecbceae16c605ce898ef837cef1fce1978bdae9a74a60e9ba5b5dc38e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:25Z), 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/QZYXP2302799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c864f828e46a1e84ca324d9a85ac4ecbb74a669444b3714c7be1683d8747c. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZYXP2302811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece8f6975b8f0b31268834c3d041a9584286abff92d6261e11292f885edb890. 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/QZYXP2302981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd0fe519a7764156174d889cb5d3b8e10fb7a383c02cb8719c8f4d36700f5f. 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/QZYXP2302982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aeddfbd8b06c799d60bbbaec8f815b31d1ff97fc8fbec4a40ed29c4a2eccef. 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/QZYXP2302984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba564c859afcf924d861362829fab129270b3005de3d6449965bbf69fe78de7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZYXP2302988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e6e33393920b2715bd1aeb3ae6f959bef30ab41f075851943916e970116d26. 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/QZYXP2302989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0805be9c0583ab03103ff4fedc8de8e61a1fbc2b8b3d9b7dd8b6a1bf0936e7. 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/QZYXP2302990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95ff6a0c193299f3cd897b875722314609613dfe06732330ad32b9200d29df8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZYXP2302991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d11de220eaffec9e95d4a3f55dd39def3c0520835e47ef1a719531c218d2eee. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZYXP2302994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065507be62e06c6e1fa7b75617868a72e7be5dc2c9de444c63addd21290222b0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:43Z), 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/QZYXP2302995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fba07a5f91151ea6930b92c98daaf013bbb7e6ab10a5bd35901fa2101fa60c. 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/QZYXP2302996.