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 0x33d10fb9e43ac135550ac009c0e64788fd10d5ec81d7a44837eb75fd11160c63. 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/38e0e87e-5f82-4a7d-85bb-cc5b9a736e77.json and https://artists.proofprofile.net/proofs/artist/38e0e87e-5f82-4a7d-85bb-cc5b9a736e77.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 0x5e30eed0633e6928ba0913405dfd096a1380b37c40ae1c619acef10f6396708e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:17:56Z), 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/BRVIS0500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d1ba195cd04ff6ebbf767efd7c1f4d7701bbfbed9ab0a23a30cf51ec5cf24a. 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/BRVIS0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc0cc6c6cfb782e635de7053e697b92bca11a4c84bfef49ed1177b9a5b16408. 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/BRVIS0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3152d6beb9a84c39b583a7d68c8d32178129544c895720eb315f86844075f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRVIS0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1283227e7804d82fd32a38b003edf6266b2c76cfeab4976293a1a946153b8d. 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/BRVIS0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e655a667f4ba1624d80c10cd1ca50b2057e7cdea0d92b0d36ae7f2449674789. 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/BRVIS0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841c689563e3484159b9e6baab6a072ee189c44c2ab39324c97936081c883886. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:59Z), 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/BRVIS0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dccbe3cbdd0a2f06d39abe249d444b6357b6fe2d12017d9089d82fd71f6106. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:58:56Z), 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/BRVIS0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7827ae0d565ddd831dd774e41aa9b188d438732cf99e0a2b87702199f71d73. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BRVIS0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f5d1886f6099ff52da035dcc69bd748c26e251d714b2b2925c6bbdb83d271f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BRVIS0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea618c89dcf901991732d421b65cb5d44d2675111ab0040a7d3d31d388980da6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:44Z), 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/BRSIC1100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248f5ec6d2ad178d28ebee48d7c145ea210b51355deaade193d0871f6a7c9c0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRSIC1100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bc5cb4f8dc926f332a8a137c1988aa00282651483e5868481cb29aa134aeb3. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:45Z), 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/BRSIC1100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631676b3059e5084ea62486accd999989279aa5560d1939fa9837ca29b91691. 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/BRSIC1100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791fb73f2720cbfa6256d4753f67d62bf2db16d4dc68e63adc58b239fea97e9d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BRVIS1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194565fe478eb0dc56400688cdf72a40846a7212a1455e312d24d6a993a3e888. 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/BRVIS1600019.