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 0xd4c9bf4c4ec5c49e75522eebd5ce82ab85e2d7f87d730f8d63ce73fc8431816c. 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/3633d7b1-3bfe-42ac-b901-14a7ce661592.json and https://artists.proofprofile.net/proofs/artist/3633d7b1-3bfe-42ac-b901-14a7ce661592.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 0xb7bebee7da0b947e665008a9abb3b4dacb0aea2b7f632a310b3ec84cd119a7e8. 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/BREMI6000806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81fd1939e95d760f7548c218864cbfe6a223a2ba5f2a80f15a729432d5e5381. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BREMI6000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb736fe3271d929cd23f8c803bffc519038a7ac1fc778cd043f004aaa3ff1482a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:40:36Z), 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/BREMI6000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf1285aabd438f0e4c072579103a03d4c6b32bc174e06626432796cd53854f. 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/BREMI5700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35288d75096b8e82a381c1241c6ac675702ee3f834974c97d686a1f303ebe2df. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:41Z), 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/BREMI5700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7ecf14782b6f6530cdbdfa0dd55f93b611161a8a41c565e5ce575b381c2a2. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/BREMI5800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc4027783ff30769e8fcb3ff4979899c1f5e55e2cc5b5a9f35ac3ad1bd9e98. 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/BREMI5800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4200316c365ae60c58ab8cb7e2a049f412e6775df1c4544bddc46968e24ed6. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/BREMI6000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424a3cb39600862a214d80abf1435e68f7c55e0b4c00c0df14cfa443a63eb4e2. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:59:47Z), 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/BREMI5900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf1285aabd438f0e4c072579103a03d4c6b32bc174e06626432796cd53854f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BREMI5700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7ecf14782b6f6530cdbdfa0dd55f93b611161a8a41c565e5ce575b381c2a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BREMI5800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc4027783ff30769e8fcb3ff4979899c1f5e55e2cc5b5a9f35ac3ad1bd9e98. 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/BREMI5800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9ad47a6c1385c24729abd8b390f5c7a89ff0f1ebbc0090636f407661d0c591. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BREMI5900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f765cad36e597af4d20c0138ed33f0d2875853ca4f371dc63f1cdb1ff123fb. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:22:10Z), 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/BREMI6100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5de54cba8eab1bea17697c089c93273d0dab98a544a20fce8ae7a3f4a987816. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:56:13Z), 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/BREMI5800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60de1cd227552d84f4309b08446f35e8f5cdc4ac1f1035528cb23e074fc7b2a7. 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/BREMI6100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1457f3975788ffbb0aba29797d9dde080a1a4912bf81b0e10287e9eba2204c1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:48Z), 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/BREMI6000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aef5f359be4af61e57ed50befb2e73ae15e5648f93895680013a52d0318b1d. 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/BX4E52009504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873f201cac0e42da5d0a5b60d66ba836745f0472755ab59da2c7d2a008893800. 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/BREMI5900360.