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 0x06ee3305f009346ca200e9eadae273ace983e52d116478af7f1c3db44304d89c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b28f37bf-dafc-415d-9714-a9415896eed5.json and https://artists.proofprofile.net/proofs/artist/b28f37bf-dafc-415d-9714-a9415896eed5.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 0xb3ae3fac4273ab3a27d9c71da5b23de7ca07499a03ad544f1a3ea9c4efd2ddbc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2317405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7199441292984594c585ee7c910d4168ed362abe02f2d76588c28a6f958f2a80. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2317404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb14a3bf53948021d858ca92d454d4fabf248b904896a7a9882e46ee8fc0d82. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBLFP2317407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf7df330791dec6013b946bb3c2c4aa0f5b5b1e1eae499010b240dd7b7c501d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBLFP2317406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660b3892181c08888346b105ea094685a5cb444c5dadf59fcf9d4a2b6a023907. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBLFP2321789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d36f343467b2a60cec9328791efea095cf453ae260b53f2130e5b613481feb3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2321790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8639e83f8305547df9293be578a3a56e583354a5b53ffe599a895aa4e90909. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2321778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc241062557412304cb330999b3e2e7de36588a46593275c85f41d8e3223e8ec2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2321785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa480657b8d18a47b9c5ca481e923ab379f810b289a51b1d327042625bc9e370. 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/GBLFP2324332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89dac6b2b3ca73dfe83da466dbd32489641b68e5d0a94538dea26c82e7d7a62. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBLFP2324344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c845b2b8a01e1c2bf07d20ce9145286a1c42fea9b560b4801ccf400a5b3539d. 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/GBLFP2324345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7860633dbad56b7eaf849c84da4683c6ca69c67d68e03b016b87a0f3094cf3a1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBLFP2324356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac61cefbaa49266aa298373762e72fe0c489e95492b068f0a7b277aca390403d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP2324363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe762819f573eb344e7b068ae112acc2688f484433b210fbdfff4d334948c93a6. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBLFP2324355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb662addbe3208e0d3b76c0073620e4499ddb296bab8ab8cd0bae8262e8e7845e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2324357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834b1599495e58a10640be6679f44539de88ab204b56df21c651355e0bbd9d9f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2325677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a502d4f8b6bdbe5ce3bcf70bca39b67b11f059ad666a7d2184c169f1a140cf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2328443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf631ce2d006cdb57ba997b6a485159141bd6c230dcc64a2b0a2aa97e473901df. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP2328444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3056ad86063f8e0cefe583be9340f01fa9af7c67a1904fb1185e65e5fc2f0e9. 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/GBLFP2329254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64e87be564353ab5d193a8bccd80163ccf51193e939e6a463aa1d3b9b7ead81. 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/GBLFP2329255.