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 0xf0a1c72a6353e5a3fbba6d4faf05467988d0d67bec21de3f3f9fde94e325c6ef. 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/d9f02f52-4ab1-4950-b317-340aac531419.json and https://artists.proofprofile.net/proofs/artist/d9f02f52-4ab1-4950-b317-340aac531419.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 0x0a1060e4b7c592ad0ff0da2b3eefc16b7c4ef8c8a5cac81e11316d58015f5db4. 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/ARIXB2401625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d007cec8c968e931b324cf698fcb8164461bc0e55f220898ec073c017497be5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ARIXB2401195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95823bccab083a704ef8412ef8504811f2236e1e6848dd01d9de3752b12c5d11. 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/ARIXB2313485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143b613961c7ee22081aaafd78dd6b49b2ac4c0126b7677b320782102d302f91. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ARIXB2312680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc077cb4e6e55c14aa403544d4eca5811b4bd06923a4dba41c8c5539eb2672c. 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/ARIXB2310548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a20322a0996c58f536ddf70fd623fee665fcf009cfb214b1591498fdee4cc. 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/TCAGP2233254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973b83137004c6906a1bceeb3e2708a2601de25fc56c50c844c2d7e927308357. 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/TCAFA2000733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27f244a5d8cc503e918495282bf614ef91f2e2ecaa2229ec5ab30f0716670c3. 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/TCAFA2000788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9a1e61eff74bef00178b8168de8d0544568625704d9e3fe2becda56e82b60. 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/TCAGO2248177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649bce675a8aab441651c48a8cdce848dae049be3897b63ab0ad5b0c1ca5ab83. 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/TCAGO2248221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5fb6643c5c7417715edd7771d4750cc4865dc3d97725f9e2206375e409a3ea. 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/TCAGO2248231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764786ce5b0b07d8c8cf40497785d60dd19e2b02d057c9990b9c0c8014c46c71. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCAGO2248248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a55246def382898f92b40762e86a96b1c33482f0f8d290cada6e7a634492f. 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/TCAGO2248258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46e84affe9491f1ebeda1e5165928767cbaac77c6cbae8e164eb138588a09c4. 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/TCAGO2248276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c33551091a107f4b8c3055a262cd2d5d25378cd43ece1a1eaebfcb376ed0fb. 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/TCAGO2248280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e4256c5583dfe0ec7421e1ca6c0a24a2c804b6f2880b2c4d43cb5de444f591. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAGO2248306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ad5923ea1e0f6c3539a2b712d2e687ce650adab6c739800262a4c52ceefc6f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ARIXB2402759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca581ec2c4f334ce6a5daa990c5d7e84ef571fc8d7bef94540956b1c01ed37b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ARIXB2402601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883450691936bd6ddd7dda22f6c0767b2a22cf27de5cf94543486a51e90d17b. 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/ARIXB2402762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d787f61db05d84a0f6392815a5f203c3420312eaa3e2d3b04d19be762a56bf. 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/ARIXB2402763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2340b0ce76d68d4127ddfec2c9810f0670581bdce7e7e1a26956348c429e1. 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/TCAHD2328490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca581ec2c4f334ce6a5daa990c5d7e84ef571fc8d7bef94540956b1c01ed37b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARIXB2402601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5914aa9a766f3234aaf185dac42e57983abdcd45ddbb75510303769c137694a. 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/TCABW1420387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe74657a22f5136670a197745da009be5cf5bb8adcb1b797bc27d527433c74d. 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/TCABW1420457.
Ahora Que Todo Paso (Runaround Sue) Studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e108d688c24d10fce820510ac7acdae617ddcada27153c4a7a52beaec69d7c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCABW1420460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec92c7e84ddfc47ee71f5bdee42a1421cdfbb4ef5597edc260f938e549c4561. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZNJW2024420.