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 0x604721a0af2b7cd99337c32ce7144ec1bfc27a163c472088b03fef3c7781aa26. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c09cd75d-4f7d-4c17-8f93-ec352462740c.json and https://artists.proofprofile.net/proofs/artist/c09cd75d-4f7d-4c17-8f93-ec352462740c.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 0x60c8974b557ece40b8944731cba3907971fc10b307a0301ba274c58625ed78ff. 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/NL2QC2100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347e1c4cf78c6664954a5639282fb48b0c94d46b881c2417bf67cf6b92d7301. 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/QZS672134619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c7cc6cd238d0f30bcb659285d57f54613eb113956e19153384a5f35cb548c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NL2QC2100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36c107bbbe16b4cb01a3241e2f5946ae724b46467a4fbc6e4bcc2ca300e1257. 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/QZS632174752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb318d6239d3a70f27902858abfd2f5be3ee2af084ad84cf68c304a0455d93f1a. 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/TCAHB2343968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e1174d78535b80a618c8f9881a65e2ca22368efbbac36beffcbb2251a69990. 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/US38Y2435613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572136a4e34e77264b2103bf9070b5badc02ad362d87e761cc9d6083aeaf4aa2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXFHP2587662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3171e355c1cf7964d4b00304b363e92d0e8dd5e72ac48e13fccc76803c66586. 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/DEW872006419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0b0f5d9e426341fc5605ab571229e8c3cfeadba976c6099879eda3d1e2f198. 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/DEXW62200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9c4a6f91cea8ff669a9fb7c24b1e3f4f6c8d9062c98a63e1c574cfa2debd0. 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/ATEK02299029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0bc2b00db9236f4c3a4f1c3550baed229e2c8495eb0b0244c7906f4e2efb17. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/ATEK02199045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851409ba432b4a5b7eded40b3202dddc3eebfbb2cd74a0f2529a8fc374cfa849. 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/TCAIF2492433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b504c517cd552d186fb3ca76944acc5818889f8ed32e4b3ee782cf57f7b716. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM4TX2333571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225f9f40427980d805f05a6d2a16c9d0c6556618116f6798e1066ac010579515. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLT2H2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7465f7702360566683056f499a4dd060c850586fb207fde114f244a29f77d627. 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/NL2QC2100862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ab545a9f2b6a59824fde5f21e2759bdffbd91ae38191f61e19e6afb946cbf. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/NL2QC2100863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c02c79b86d6c9530204669bbe45e7340cbc5871c9a9d9c18c7c5afe9496af52. 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/TCAIB2421835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf691931368bb1127b7e5f2e006b5960d719493580664e2ea80ed70b4c316d147. 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/QZTAX2260895.
Santa Claus Is Coming To Town (feat. Ricky Vicente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f9b228efdd8f1eb04268bd5cb1200aef2d5a7e487d172b399c717511ea18f7. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US38Y2309831.