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 0x78619e80edb43f111396b3a72f2f3c11c2b51bff107e53fa33ceb4ab052afa2a. 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/a3186b76-838a-44ca-8c6d-93cf1db3b454.json and https://artists.proofprofile.net/proofs/artist/a3186b76-838a-44ca-8c6d-93cf1db3b454.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 0xbbefae40d2fbf1d8fdcbf96cdd9d941335b1424b38d57206585e2b78a893f175. 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/DGA082442934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7b5987a168633863547013f5a317f86c4b0c9cb3fc20c68ff46baadf3f3e3d. 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/DGA082442935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5619301fdb3800486fd4662b87b821df9705439430c0c67f36ad5fb8acc9fad. 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/FRX872443811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7aeb88649f52358a83220c7dd9172d3b820b141b34cb1d24b0036b09e52eae. 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/DGA082442936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8f2b7c692828d0282cbfb51ae01b96910fe7cae6deccf80c172cfba13923bb. 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/DGA062411915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d257431b42ad65318a5b369394fcf6e4414d505ce62f8d4f07ff0f5d663523b. 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/DGA082442937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64f9d3eba91b2d0beb9d0370ec6bd58d70ad23f2ea2e6f479422b787c40ff62. 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/DGA082442938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e35d0cfe0eef898e090caffe02911bae101fa1e38b665d822b5e41826cbe91. 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/DGA082442939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdc46f1ae94e44a5fbdc7f112528fae5d957d1b1f26731df517f5eba352ff6e. 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/QZWFE2378080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab63a0fe1428418bf6901a8a686ba8fdb8d3ed0a5c2207db1ac64fe6cd703d2c. 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/DEPI82310586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa497627ec2b7788a4f71aaf1f1471a419515df44a68b1690c5c7c88acb268856. 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/DEU672300905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8f2b7c692828d0282cbfb51ae01b96910fe7cae6deccf80c172cfba13923bb. 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/DGA062411915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5619301fdb3800486fd4662b87b821df9705439430c0c67f36ad5fb8acc9fad. 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/FRX872443811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910316817657ad3ae77b76996324eab5af4dbcda15039337b7710703df6ed282. 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/UKZGC2402212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c0141d21c6b636884706c6c93cd109a6c63a0d1d4800578114d4a8b5ff1541. 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/QZK6P2347834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b85a72e29429525f4128d5159ef5ca27a41429dd28a58bf16091ea744cee0ab. 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/QZK6P2347835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ecfad107b33c4fa53425b842f9f01a6869a068fd10843b93b4553914848285. 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/QZK6P2347836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1493c1ecd35538098addbfd06b135ca3f31d8a081940509532b4500a2118de1. 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/QZK6P2347837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695bac0ee7399d2ab7f1a8092695c244789c03aebcebbb8b94c300bd5ea76c90. 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/QZK6P2347838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9dcbc1dac80d8367c823c54e1cfa6e1dced450b93f5b13d46293f48622206a. 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/QZKDK2274211.