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 0xf18e523136e895f6f43066fd0b665fc437b3aaa8275d14fa1f49afc839742761. 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/415fbe20-a7b7-4226-b8ba-5433d79b08bc.json and https://artists.proofprofile.net/proofs/artist/415fbe20-a7b7-4226-b8ba-5433d79b08bc.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 0x334730ce58bab6d4664034eec01ab6236e6ed1a66769a5d12d136975e685270a. 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/QM6P42007487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06d81ae5024ff55770d5d92d55cce1f7ea60c48aa38c405911cc1aa1e0937de. 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/QM6P42009752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc8af2a2b77db2765a8fa176f4fdf7ccc201b972926ad05ca3b77f68f0f579f. 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/QM6P42009754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f1e0140cff99514ba10343ebb9ab42494e575e6dc47af3c4f530bddf07a21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42009788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc185ef6058c5a260194c63fee94224209acd6c6adf158989bd7c1c1dc121e851. 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/QM6P42009785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fb8e2bee1991fdc0d1007f3c3c2b719e3085a45ad80a26bd1d243cab76e038. 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/QM6P42009789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28452b0d038bb44e6e06e1679b9f8ec04ed382459a830162a00d49a3121c7dc1. 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/QM6P42009790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef7750415daa9283671708093790c90c239057348462e8037d69eca89a0e39. 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/QM6P42009791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596fde5fffd9a543727ef09466f067fcde64df0f111bc1a6c8d5f3ae1bcfbf56. 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/QM6P42009801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb649e76bd014fa38f0283d9ec8f1958fc3c8dd7d30bb7033f157f69a44a32e. 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/QM6P42009802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dfe805f0e894db468ef357e793dfe1aac899560f34f64ffe16d71ecd41c9c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42009809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ccf6f0efebf152df7db8ed330222d2d24a375561b5c49fa0d1fdac456538f5. 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/KRA381903726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e09d4ee358e6d6d62e151358c7016c5e8d473998838aa17e7fb1c562c1b80eb. 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/QM6N22404801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbddbbf5860f5b5af85fa6cb041608722f1e14906bf3454cc877cf445d50b8db. 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/QM6N22404812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14151ec2c3750007c16642e2d9105c1ff589dc04b87de48567c7805e1cda420. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22404802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da91a62ae0bf2e3a7481dff4d3b99136570cef78aa7fb88b66ef3e355c98977. 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/QM6N22404813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1d5a773ba1732548a925650770330ab7df924633c247ed8e15d29d77f758a. 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/QM6N22404803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3c168e5c0ea61c3ae86a6bffbf959982fe78c334a846dfe41438ce5be3144e. 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/QM6N22404814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8de28f6129f029052741fbe467ec611ecf91399787b667c24842851abfedb3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22404804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1800aa9fe75e60cd264666609ba505fccf9256598b2dc9bfaa1835c94bb71595. 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/QM6N22404815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1687ea86dd41329f240c43390fbf4a672466dcdd0889362a880392e982af3f3c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22404805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2191caac12f327929db480f38ac3aeea92ba0a927d49d46852f5d1e3de131f98. 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/QM6N22404816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dccd91b19c3e4d224edd5c163b2a4ec5c4e4e5b48f4db46c507c518c7c7b218. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22404806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4af33b2023d6b3974d81cff29ef1bccba9ce60848dccbaaee34a3e4e58050a1. 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/QM6N22404817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dd13bc0050a90f988bf85932ea6080e546d4cf0fcdfed38b439b5c8dc31c8d. 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/QM6N22404807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7246e6fb01b5c9766c39ba563e1b86bde0277ac4966943b1f6508d4e6028c4e. 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/QM6N22404818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e284bbf1c8680f668a1514951527a35450512e7151568a5a855a75881a0c52. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22404808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb056f106e31216a049a3d8ea684e9414fe706b8eff71d73a289e99f685f9907. 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/QM6N22404819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bc2b71440611d88adef12c8d471abdb3a3e7a07f8f9ce7b2a63c488ab534ea. 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/QM6N22404809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7599afaadc90c02163026dde30107e475282183541d2a47503ff112dc2a4f671. 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/QM6N22404820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbef39ad0a32654195a8d1e93b1e52d004c4698db4842e4aeb6ce9b638ef44b. 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/QM6N22404810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba52d12e163a5798dc92a1d9ffc60715f5548cae5fde597a2247fd25102dae0b. 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/QM6N22404821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0165d159b66b04cf79e8e3ba8612568cde4ceed30949d1951753dce9c387e8. 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/QM6MZ2421513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24145b5e912ba6379affa9b456daec8c83218708a5cad24a9bfa78fe17cdf5fc. 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/QM6N22404822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb987dea13e14117fbceba99312ab5723157e34cb8c6572eef824e2e561ed59. 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/KRA381903480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b0be299e3d22fa6868aa84f3264bdd13a37587b5f5364dd8ae8d97e83ece5b. 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/KRA381903481.