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 0xd32f7c5d20f4435f881cf6271bdf3069d5084dad6954e61f5d19fa9fa0ba6238. 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/db8976d1-dcd0-49ae-8010-54f9a055d5f4.json and https://artists.proofprofile.net/proofs/artist/db8976d1-dcd0-49ae-8010-54f9a055d5f4.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 0x35ce5ac0be11df11c4670616d66619418ae509576e7f8fb09a3cb7d5c67297b0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBJAJ1400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ccbf0c659c4be7827a42d094cb91cf62b9eb37172f23d3fe023d7f5456841. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBJAJ1400770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c245800c3948d6acd0f927daa16ece42a5745310cf36b1ce82d9e9bdf7567e3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBJAJ1600999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f4e0797363087d1e994de5b640f38df4e5810122214ee7c1b43d5f6d070c63. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBJAJ1601008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7765b52c74c24f3dc8c831b4602ef130f5be1d12baad2147536ee0f317debecc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBJAJ1800311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77731391c3e0f7ce539ee8f996b34602de66ff53b738447b80114bc5cf89387b. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/GBJAJ1800312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1a6dd432c70a18e2256d4614f3075a567bec5c1e2a0d33dcc6ab9eee7dbf16. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBJAJ1902499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1116f7c9d7d78c94eaf9fc25eae1faa9bf13b7dc2fa26ab62f849e8fa72bd3df. 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/GBJAJ2000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a4806c501a750f871b52e5ba0428f07dafae7ab8d876d75a3376dace48a29. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBJAJ2300938.
House, Tech House, Techno Vol. 2 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb87c3159179994df438cc9c73c2de2b44e6a0924bdff9627c4242845f3a748. 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/GBJAJ1800933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0881488a3e28c48b4815269896a3fbacdc2a522d0be4fc1a1f3641f0af9dfb67. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBEWA2402349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba070e42d97d8a3fb789d439d74312c06aee6df75e6743cb276f2a068342a138. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBEWA2402293.
ASOT 1123 - A State of Trance Episode 1123
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57827313336ac27db43e8285f8480ebcd3e54ad7d6276ad70bcf3751fcbc881d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLF712304588.
Toolroom Radio EP702 - Presented by Crusy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f23057652cb3511b26225e4fbfabfa611e5f4424bc671ae51cdef1d5b6d868. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBJAJ2301197.