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 0x90cfca28426f010a2d15a3f36123d91a4d58b6db565614db2797e815de654fdd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51975ad9-f20c-4d22-8e64-f37b34ff123d.json and https://artists.proofprofile.net/proofs/artist/51975ad9-f20c-4d22-8e64-f37b34ff123d.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 0x756d4a3b6e241face1236554e2b98ed2cf024c1ac8eb01210cf3f492b7c7dc35. 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/GBKQU2318318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24286bb546c059dec0f40d96120a02d3f3b5a6b66a4749c9e5c8998036ea27ef. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU1877986.
Woo Let The Dogs Out 3 ( Compiled by Rustlerfari )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022cf766c7c5b8e6c9fa12ed310686a0ed567db2a7bb14819a6d506eb70174bf. 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/GBKQU2242779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a3cc02fac0b4e2fd35ad83ba7d3a8bd07cd88a6eb4523ebc21d1212f7b4b6. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/GBKQU2242776.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2eabbda6f15673496c691560fa151fc51de72654eac3e80483589e4741324c. 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/QM42K2382326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf76fa76e1e9df0537b53e8a2994d3c378bedcf8fdf510811ea6c56d5a4c82. 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/QZS642251365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131e85b1bdb302f7debc90ae1d1135a447a06df652e1c7bce13af7cf03653128. 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/QZMHK2256082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eacd6fdd3b9e4c86038c77c1f9ea0e729a63f303cb1b12fe4fc0cc5be2935d5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2413616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d972b632623268fb80caf8a95a5ab2d20afbc52f182da53dfabe81b0694e7. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBKQU2413613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fea09bd3b2bc349730fde3afbcb9fe5a62df5a65cde504365b2196490033a93. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBKQU2413614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2544636caa5134288c580a1a03e9e9b72a66942bb65dbbb7e29c03b0b9e2f3b6. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKQU2413615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176468d0a25011873edc19b7eda87104930ffb9abfc3f72d35099a30ac9a3537. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2492311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd138055df53b2e019ebc16a872f221a00d741c3977ce9c8e0c3dd286aef575. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHM2421685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd715e5a3060af0412cfff33108314e31a9563c752d6a080d2a4c5b02efdd9cdc. 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/QZS672277892.
Woodland Critters 2 (Compiled by Steven WooDog)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6323db05c8fb7441110a372840398da0c0ce5f8fe434dd6ccc4bd69196614f3c. 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/GBKQU1897480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33648416bb6fe3c80fdd957c2e58c4b0fb733381823c0fc92e3cff6a8dc70081. 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/GBKQU2199017.
A Matter Of Perspective (Compiled by Nuks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9904580685841c6e1a14f84a9f8e2364f6bbec3773efd520407af397eea0bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLV61902754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6d32afbd26bf374baf79d3e0b7df0d7fb47f25092d424a3127f6f6de733c4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2252957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78db244d208a9576e4bb6d2991aa991cb442954ffbf1af682b4e3617c2b82b. 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/DEH742423641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd640f899ac291a047f5ec567bcfc207f1e75000508382ce8f08afb351fff76f2. 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/DEH742423643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227447207443e6a868f78385a7b054d59d1b25db0a19d61e74c518af8d5d257d. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEH742423650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf16381fe093af889fef0dcf94aeb947337c4b21f31b796d43e9d7ec9bda29a5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH742423648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731875b0730425feeb42ca51ef69cd000c1734b979a0002be2aa903d7537995a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX452176329.
Liquid Soundwaves (Vol. 01, Compiled by DJ Manu)