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 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 0x831ed18392224056d7f3a2087cf7174983c4b6acb765bb911325c205905eef07. 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/fa6255d1-12c3-4bde-8ebb-a055e62ba806.json and https://artists.proofprofile.net/proofs/artist/fa6255d1-12c3-4bde-8ebb-a055e62ba806.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 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 0xc567d9ac5816773772898cd6838873cf52944cc2f7663e952e5324e9031a5bac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USN5Q1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1403909a5f1404d7fa1b1857d923dfbbd7dc0341095be9ba3d4ecbbff1df2b7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USN5Q1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d626dee5d82d0ae5439eb4161dd2866663bc4059d28ee141e4eca781a3e7a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USN5Q1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6575c3092a4116f25737a75d31237080ce928fb30a576117321e00b7c03f4b3b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USN5Q1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b145bdf4c0976aba19115defdb462d77180fcdacf7401cb2aac9b174f1af86. 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/USN5Q1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8162799219e98b8c6ac0bcc50d3385ba32fdb037e0f2e505accc7c4773447081. 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/USN5Q1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2745aeaa6eec0d1380639f175808d1555d739e9d8111d24c1b0c20ad22ea15e4. 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/USN5Q1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bfb9aa11ef3a566607445d938051baba3a479336e47b408e9908b994203a86. 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/USN5Q1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f913d203fc4f05fe5029683f68bdabedb93daf919920887f816acb25349df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USN5Q1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc6c8b9fa538e17db7502a38664a76b1290892246ec084e93d9caae1c179f2e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USN5Q1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dce18489e08efcf4f9c8a0f44b166edc2388eb87cead6f4f9e226f2513c87f8. 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/USN5Q1200011.
There Is Only One (Live) [feat. Misty Edwards]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a49715e352caca54c82fd52b191de25b3bc9203e7d80c18c9c5651609440b20. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USN5Q1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa036a9a8b4ac00c02edd8eb219ff891f8b39d9aaaf8266dafd034c1b7bcd9. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USN5Q1100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c74e8c94f582c261832ebeee04703ff3c9f71b35e56b8ec934aced3676b6bf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USN5Q1100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd050b14e3c2c5b893bbc628c124745d3be0adc395668859a62249572cbe614. 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/USN5Q1100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6ed374ccdb36b462b4e8b6df3638d8020f865308b34420e492088bbc5ae053. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USN5Q1100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb250084a9381565152142149d29efe8b6f96aed61874ea881eb8521b67ff54d. 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/USN5Q1100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820c3b355f36861a43485a141525171229bbdb41b1a87614112039bf58be060f. 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/USN5Q1100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7618c01b90a81cf3b1ed699353c0647ed76c758eacddecdf077ed82d1300fc7. 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/USN5Q1100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f414fcc4374ba124d4f4f4d18642ac4ba9cc8bdd50555fe9cb2d6c0cbbb1c. 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/USN5Q1100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d93ba09b3411f91b3f9b74f8290efbebde8abddf30154074276f4ae03b182e. 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/USN5Q1100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66670eebfa1d8ca88217414ab055d071fbbdb991d083faa4e82049961a649d52. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USN5Q1100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986fa38c8d37e3627d6590032713cd710a8e953ab00aa5240138e20630402aa4. 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/USN5Q1100058.