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 0xa3e8cd488b03c723b155d872bc827a37f8b59ea9d29911ec7b22f0e920ba1988. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cc8f73e-84f5-4b63-ab52-e604d99d9409.json and https://artists.proofprofile.net/proofs/artist/9cc8f73e-84f5-4b63-ab52-e604d99d9409.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 0x27548eeb00017f08bc13035f1563fb221daf3cde19a68931860f4932846477c8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:20Z), 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/GBLV61604482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e41eb406b97cb439cb2697f91e9a4b4fe8ae0a6e0b0b177e8ad0b235773ee. 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/NLF711802714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e41eb406b97cb439cb2697f91e9a4b4fe8ae0a6e0b0b177e8ad0b235773ee. 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/NLF711802714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0a1970b22218127d328d2eee8a002dd27df9d51f8e552605bb11f0b7be0971. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:45Z), 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/GBLV61803740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cb922bcb1cad6f29df2a3879c1819da5b30ff0b1efd737625ac1a73a9b2fdc. 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/CA5KR1962730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac653a443d8a1b9779406588b7c0826733dd2184ccd12d685236ddc8d2b1ad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S2191305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8ad5161cc6b19a78e67f8ea1c79bbb401c78ce18ed53c78c0ba3b6dbea24c4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBJAJ2101923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ac876be02c4c7c8366548be25d7ae42008b6473969280799cdbaf8631e750. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBJAJ2101926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017f2d22beb574ce50e992e7b072032b95ffd35bc19f739e2e4b39c5262b8afb. 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/CA5KR2212074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99309ec2568ff6e9cf039bf9692b7f0cb2d15a5c825bd48326c0e7e696b15af1. 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/CA5KR2212075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27426ade1f0130462b4aaa9cec29c3fd13665ab816aa1dea8f06c9256a1ed90. 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/BRUM72201657.
House, Tech House, Techno Vol. 2 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4f01a446f445a1871cc8ae4281e4858896822d70e94f86ffb6394fde946e94. 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/GBJAJ1800937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa22d95e4818f84a3231ecaf4fbec1d86f4895fa1374aebd029e7971ced3c63. 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/BXLVT1900327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80947b48b84633977fee78c0cf9b1c619b16f9f52c5decafebeb3f40d45dcb6. 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/USAT22101902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e59ae8907c8b6f537fcb4d6fff6403dd0efdd81e62d6fe12c78d6ba73e6c3. 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/US83Z2117569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca469c5da8157118561804845a299bd46dbd73de96784cb425600c3e260236f9. 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/NLD321900775.
Out Of Touch - Tim Baresko Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c8d891629463eee433603e179109d08795e1d1699a8ea00c9a06b6c094180. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLD321900777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae627dcf7a232210944a3b6d4345dd6219ddbcc82e9457ee5a78d4f4c035bd5a. 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/GBKQU2446244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf521dc4c85e6800c6bed44b4fc8eb5da1e3687b832c17dd99f7ffd791ae6af92. 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/FRX872147628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eb196e973e8d1010c4a12bad0877ac621e5aa35dabc05d53b91381f33e1849. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USNRS1837157.
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