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 0xe9754db1940e95cc2e53f7a96a007e409f69502b48b6bbf40d27f5fbe6476b8f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78b33725-fbb6-48fb-9286-789413cd6e9d.json and https://artists.proofprofile.net/proofs/artist/78b33725-fbb6-48fb-9286-789413cd6e9d.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 0x4c213e5794ab0d726d7f8501e5bd4d9bd2475dee6fab056c63b79afbe8bd2d88. 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/FR9W12347820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d8d25125ac2bc4a307ba9b4872535d7052d49504f18d6cb4332aabfc5b23ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12347818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7714333b6d6f1884103688a06349e77a3c50218dad69cfdf46a0b9170c325993. 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/FR9W12347827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8aa3c699298c6d22762d6840244090c79dbb58a24161f41d0f902c880a920. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12347819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040180aeb9191401d5497e64c45d83e3cf64e71d4bc0dd4c877db88a806bc168. 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/FR9W12347817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d8d25125ac2bc4a307ba9b4872535d7052d49504f18d6cb4332aabfc5b23ea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR9W12347818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8aa3c699298c6d22762d6840244090c79dbb58a24161f41d0f902c880a920. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12347819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1e13606043c779bd832d4286d2527477783ed5d70e3c2a16bf03fe836afda9. 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/FR9W12347823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab16e06068fea2190e28a56798046fbe7cd5d3c975c6f14908777bb0cc5eea5f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:48:34Z), 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/FR9W12347824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe6d504ed2d8b75279c86405e414ca8aeb8d7fcd47c8099fe656085e55488e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12414064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dbc81eea6f632b3511e9271b521dd1537a56c2c4834a5bbb986de68ec71c6a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9W12347816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040180aeb9191401d5497e64c45d83e3cf64e71d4bc0dd4c877db88a806bc168. 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/FR9W12347817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d8d25125ac2bc4a307ba9b4872535d7052d49504f18d6cb4332aabfc5b23ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12347818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8aa3c699298c6d22762d6840244090c79dbb58a24161f41d0f902c880a920. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12347819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c213e5794ab0d726d7f8501e5bd4d9bd2475dee6fab056c63b79afbe8bd2d88. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9W12347820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1e13606043c779bd832d4286d2527477783ed5d70e3c2a16bf03fe836afda9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12347823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7714333b6d6f1884103688a06349e77a3c50218dad69cfdf46a0b9170c325993. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9W12347827.