1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa4bf8e3f6738d4566c25fad1dbfb0fc50a2d7dea2ffd277f0193eae97d8cf524. 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/c565920c-1e8d-449a-912f-ba120665c4b8.json and https://artists.proofprofile.net/proofs/artist/c565920c-1e8d-449a-912f-ba120665c4b8.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 → block OTSBitcoinBlock must exist at that height 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 0xc1813b635c00c8b4def6e4ed7f6e2043404e7511c87a29337b870266ec9af0b5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USCGJ1085924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe1a2d12c190e30c9ba1ec6a3284499ec9e1a842dc11a5eda5a9e9dd65ff794. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ1085925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a2acc1f2fa1cc006b2f0972dfd15044bf02d2ad62a1aba27a508d7ccbb31d2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM21416754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9969f6f1f84a071f75d2ec8e75f637c762d6d843f2f088d01a86fa08addbab. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:36Z), 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/USHM21416755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0278d8bbb0d3b89218830a2658f6487de1c30364ba86eb0813be2e840175480. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM21416757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd788367c4b99a87c94bd3bf1625a4276b45dc082c6a84642cf0295a2ae52ffa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM21416760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761fce7fee8854ee4806575da98a5e595dc90a6632c86287e497c03bca583a3b. 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/USHM21663213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f74936fd343aef92207f24b2eb557802015d3bc91b6181b40b601c33ab51cc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM21663215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c477c1fa45e67f632bdfce716d67e93f4af389b6c06d712cc486ba3ab7b9685. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:16Z), 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/USHM21663217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902a8c2c561ff9c63860aca560e2c687173b3896baec9023c40291d4710c2363. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM21663218.
A DSQ Christmas: Dance of the Sugar Plum Fairy
A Very Merry Christmas with Dallas String Quartet
It's the Most Wonderful Time of the Year
It's Beginning to Look a Lot Like Christmas
Have Yourself a Merry Little Christmas (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c963ee928b4a2f2195020704f2dd86cde96399ea965d0341ad264a78ce4bc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZS632243107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744aea8c257dd47b04dfe7dc594415b32d2ee325fc4c61f407964ae1b2c6e8d5. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZMHK2262086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb7e297dd907c5ee55539623fe3c41a1e812c5b908a3d5127e27252f727f4a1. 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/QZRDE2100018.