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 0xcbe9833bc9a0eba46cfc11e644ad5d9e5a77732b11d11a3191598e27f9d5a0cd. 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/1950a197-682c-4e6e-8b0b-b3cbadd29a69.json and https://artists.proofprofile.net/proofs/artist/1950a197-682c-4e6e-8b0b-b3cbadd29a69.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 0x2a6ffcf32a85f4d05411fff7095cb090acc04b84dc16ada7d6288d9ced30b5b3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W10300716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3af828a225a36efa54b738f5ffa7cd2a0597e1f40f6c6f104b25e88a69a333. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:51Z), 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/FR9W10300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38581b7f090e8c994efde2f60967efbbea880b43136029df636818ae6b1b394. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W10300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c19bb85b6d0a160cce9b90f1f4ecf22df258d354424c4869831190fc3d86a0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:45Z), 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/FR9W10704961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aca8265c105ceff0e4d26e9e037d7273fe256731b2e22d0a2641448e261c97. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR9W10100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d146bcdb30a9a7c93bca28efb020ea54ca5f08e9b7a76ceb45a54f2b08b8a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR9W10100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a670d9fcac28a9239f630bec68f3c309d023107e5c21d0a4203429dab41ce7. 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/FR9W10100408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4fb43ce66017568c92cdd9ab41a2b93fb225d8a342768ad56a1ef1cb8a914f. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/FRW910100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040468ff44baebcbe98d7ab26bff54f99592bb800e95bf6bfead0f4a740b1ef. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR9W10604055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf8c5cc36c37ac0119dce286aeb369012f2ee1a29e63ef596527c9f7a0468b. 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/FR9W10604056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3468d0c23eccb1b16941ea2ee11f456d3a24425dc9dbed4af7720a3e61b97c. 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/FR9W10604058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24886bb0cbb71cd0d9bd03fec9d63b29365270e921b266c21e789b4527dbcd75. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FR9W10604066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18113a444e87c58bc4021f949dcbce59c3d156f11e651b594567c940b1484c0d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W11106485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec36b06da4bb947a005c6d0b51e5f50595da03c3a26ff6379a2ecbcc46591fd. 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/FR9W11106490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab7de6d0665e46636e5b53df5bb5621c60f653a8a1aab714f6ae9486db7733d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:50:49Z), 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/FR26V1554979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce0d8e03057d56ded97845f16ef2628037196e96c497568d89282d5b291ff45. 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/FR26V1554980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5ebb6ff04ff604c3c0035abaaaa9b2b248d3795ff044916fa1f7296db3468. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAHE2353956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb83f6b3a7d52b590c7112a9271946d14440dda99295ead8b8e27bfcfa57a495. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAHJ2368201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3132558ed8e3367f065a9b44bd24608b5d4529a6e35fa6c2cd42dfcb9e81c689. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FXQ242500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda3af876c5401f879bfe22a8c442cf83b23d76dff5244f8922570e6a082ea89. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:33:29Z), 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/FXQ242500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e01ef37bbccb6b9950ecf4794002b36fd46b2eb970f667f510a321fdc4d7114. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FXQ242500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69297db418aae8bed5de4ea95c0eb1e3902c030fb67e1069479ae9590b3b8e8. 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/FXQ242500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9ececbe56a19f2f69427d4c10b8354a81e8c4a577e1acbe37d596694543c9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FXQ242500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbee69b58179eaf01be9f12a2f322c7d665600ed026b54fdf5a4dab02b9b1e4b. 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/FXQ242500009.