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 0xc780ecb08042464fc842f14cd22d566b611ffe34eb707ed645186bebcb4c52ef. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55181323-341b-4a7e-bdc2-d8c8ece6b728.json and https://artists.proofprofile.net/proofs/artist/55181323-341b-4a7e-bdc2-d8c8ece6b728.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 0x544e2a53470024fd655c8c84f0ef53b6b1355aa608aed6a38ac009a7868a0d22. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAJQ2557021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c36b1778aa31adf3facdf55703a6fe0e78c99db7480d26dd84aa1d7a66667. 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/TCAJQ2557064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb712224202f679ddf485ff75e5bae448c4e50af9c74aac02b31027edff8e51a9. 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/TCAJQ2557096.
Kalangkang Mongkléng (Kulu-Kulu Gènding I)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde58ea56d0874cd8e369dc4632b737c242e0200825f9185e22c30114e5679d41. 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/TCAJQ2557187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17451d1fe5792d7cd260c72da3c4f927221686894d21549fc4126e6fbf7bf0b8. 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/TCAJQ2557210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d1468d3e620535afaf3a430fd700f4aa0116c5ec6f0b4c01cd1bc402f7fd73. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAJQ2557238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb36fc5bb01045f942f016d4a9afaf233ab232cca94b348c0a49a80b69e0d51e. 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/TCAJQ2557256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fec1063dc87268be07bf96e307509eac3cf9c8d3ab21e160047de4134feaf2f. 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/TCAJQ2557288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9756758011dd83bb2adb0c26b72774eaf78161fa02bb47c577956e9dab0fbd18. 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/TCAJQ2557352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa446680178c672ee4e194349443c0b8e630a9284765788ee270150bbb311b8a1. 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/TCAJQ2557396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fbf6aab9853c6cce6045de83848e7197e7fe29a536b5a1673762b47bfb90b8. 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/TCAJQ2557411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6d9e1f056c05027220b47a4b8a233c5fd4ef26acfbc301ea85ff7d18b78f8d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAJQ2557428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd945496428ea8562ec2879f6b20e85d75c560c4b854136cf3b00d52aa9f3a04. 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/TCAJQ2557448.
Munggah Manunggalan (Kulu-Kulu Gènding II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa062200df8646e578e5cb9e5a86a693d0a4881d928fcc81d9d575dd4f8b01. 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/TCAJQ2557457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa9819d35b4df5324e0467b4e6aa99f00e1ca1755f8b2cff98c96d58d6f4a57. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAJR2557477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264711076a840a634cf0a14d80e86a662889f8a1789c86d9977b69098c15281. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAJQ2557552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847f1af5a7eb5bc600563ea7625934f990795bc022a890e60835b1bbf7f99f1a. 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/TCAJR2557574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e483acd72bdbd27d53aa11069485be1fda26e8aa6e1be52955064c5050e79a2. 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/TCAJQ2557590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1c9c00354d9bf1f52d4335e3d84661267641557f2150625f76d72a16d5efa2. 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/TCAJQ2557640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9543c3fcebf0ceb37b6d2ec3667908b43641051ee6d0807f85328d9d6e6ba840. 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/TCAJQ2557653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cbf7d2e43b48fc7e3f49b9e9e3360a7d501fd5f00ce64b01122695f8a0d943. 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/TCAJQ2557661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe6a5ff0552dc11492ae026dc8f4de208576427a77a29a7bba81d16128be4e1. 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/USHM92409367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99357740ee3cd98ab1b5bdf0b9d6c7bc9adbe04427098efa787a4c2b465fcfb. 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/USHM92409368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d6b20940029adfb46b9ab84be4b0fde7036266e88f7dde8d4b1e3368f9b379. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM92409369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a1a60ccac659e3febb04fccb42f8e214ae9e39768fd79d460820e33e3f9ef7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM92409370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a8f4bff5e7a4b51900e70304650bf52f92a44eac79c1a92ccbeb7a37bee6c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM92409371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf354fb3810c137b7830cbc5113672b14517fc3c44aa6d5b97b1b2aa2d8b65efc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM92409372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffcee21a713015fda47a41c041217617efc6c8f3b3506e053e2e661a5e4df62. 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/USHM92409373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00984886fc878d246f7fef05895850b3d0a80f86b65acc20122a9cf69b297d62. 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/USHM92409374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c84ffb30bd14264a18affaf743eb21dcc8456c5635d9694c61bc2b4118380a. 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/USHM92409375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5ca3ef003821a6a3cd3813f28169fb754961e7d83260d638fcde61108225f. 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/USHM92409376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eda47ad266a083b1acd1013c8c31194b32e9a54653eef2dc90db271b963998f. 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/USHM92409377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119a38eb2923c0ae8aaf3092ae0fad68aee359220e110b1a88b64128f91fe769. 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/USHM92409378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8675ce4fbd8471083a5cda84665bc383d26a191513323a5a88365440f122ad. 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/USHM92409379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188762b96ee00f1f8bf0b7873a872b2716b4bd55425c9732da838d87b256d243. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM92409380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43b31aebc761ae07d9771af6ad46017a435b830759a8e64d20fbc53ecb7009. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM21888517.