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 0x858904f57e269f4563f8c9fe6ca3e93caf8422b29f3902b549e7b1d8c47a1b6d. 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/111c6069-7bbc-46e2-a62f-412805074b42.json and https://artists.proofprofile.net/proofs/artist/111c6069-7bbc-46e2-a62f-412805074b42.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 0xed371ca07ab0890af8ff0623219322b6f5407210196adf9aab6f5f79a8d9625f. 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/TCAEB1920505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391caba386f9e69454f9fea07b192d45246547bc425c23de75207a2d57c0ae86. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:15Z), 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/TCAEB1920506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c765d35bc8323182c9f6e60703be850d46ab55ebb5059330fd4099fb682410. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCAEB1920508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e9c006a96742cdb7a2da1b1315054c9ad22622bbc862692608b255a475ea3. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCAEB1920509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26315996f5cfdadac4c28f3d389b341dabc84fc0d757d10aabf81119d140ecaf. 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/TCAEB1920510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afda95fdb6ea81de57864e351badbe9bfe416ea88de27be2ad97e0ef31855ec. 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/TCAEB1920511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d3c5f0056da3510abaa9c4cd63e7946dd9be8f94e4e5e64111103835129b1b. 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/TCAEB1920558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ce01178aed3de2ea53cdb6dfb929f8159e2dc334518c924152f4425e72db40. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAEB1920559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c9f7ec453da8f0a6db1760d997dff618bcc73d1b4b074a0a286dbef489ede. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAEB1920560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741c4b16192ae477a18f84ca5dfa3154494016cf97fbc91ea65b04c3ae85a041. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAEB1920565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a00d9bbe4ab7a6127c910cc7764ce98362b94169a9e1cddf8c45ded69711cd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAEB1920570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe89f7a310c1def411bd664828e37219792f5ad5843284f6366fd9b8b0fae28f. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/TCAEB1920571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e74a5f0ff4f824038aebbf4efa44f9e48dc6bfca876dd927929c8fe00d45fb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAEB1920573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdffe946e9a08f3ea43c9e3f8c838cd3e3e54333f5a273dcc761d30d9f74dcf. 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/TCAEB1920575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a2c7663298c4dc2bb2aff80e1821c0953ea58687229b7ba555b9266b08896b. 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/TCAEO1924926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5490234b7983541dcab41cc28cee13b566a00889abe1389710688b3efd553b. 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/TCAEO1924934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66468d024e34b7ca7841d5a8194ad4751ce50bb16762e3831001ce9e7b9ccb94. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAEO1924936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71dbf51b435cadceb209a92cdfce77160b874f85ae5a7a7f87019d48f26fdc6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNJV2172282.