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 0xa7f84e795525a95da060dc2a766bc82ca5ba7d38369d38a0f5549d25d233e27f. 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/a3c900c2-df9d-426c-b663-9abc29475524.json and https://artists.proofprofile.net/proofs/artist/a3c900c2-df9d-426c-b663-9abc29475524.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 0x89541b429e5e12d7d07dec1e036d330f5cfacc1acef69d4c5fe0724f1eefb64b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DERN41900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a92c7a003a02544ccec66abbecf34cd33967e9ca8d285fad6d8a15632b424b4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBMAT1500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489debcc4e6b0ea9eee8a0ab81ec82600804e4c57ce8dfbf911031c9bc887748. 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/GBMAT1500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84f1c6d49af7272620632f96fedb13d026863dcc02a5f56d76d085b5bf9ecd7. 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/GBMAT1500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd354faab914b3282c6ee5c80f30d91e8c981bc239cbe5566f0889d328b6e6a5. 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/GBMAT1500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6b8df41419814223223411ff70b0975eb2fadac4ce9ccd8f7128073c9f15e4. 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/GBMAT1500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52a1c41cd53b1fc30eef45dcd97d27abbab73935d5f176efa088df47e39465c. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBMAT1500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d6fee14f79bbe9cb7f29ef98c01d7bc1acfbc010da85f209e50ed68985719e. 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/GBMAT1500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff488d28ad0c6a379823140a1798a345e4909a37d200669a3f9df19edca06c4. 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/GBMAT1500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a60798d35d98ca261234bb43b42d27b550a25a9dac10dcd8ba119123fcefce. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBMAT1500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6522c20ce13c33fdd74eadd7706cc7c1d6b716aec0e1adac46047a58e1f63729. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBMAT1500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542208c5fef2740430f5065896efbda765163c0c8deea080a92126a257e6c3fe. 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/GBMAT1500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7f9e4f11e6ed725228383db0f411ce77d636d7f6e70a742113ec24394df755. 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/GBMAT1500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680791d61a9510b7825e1b109d6683dbb17e0ee8e44a39af34f15be00d8e2d87. 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/GBMAT1500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9913274fc3bded8ac42ae0d50a553887bc20a950504a29fc7fff46d6d3522824. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBMAT1500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abecfc06503ccdc089ec9a81bca43b0bc654c9f11ab6d4ee655e8e426d2ad3f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBMAT0700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b2ab9eda37b18e807d3826a5095a1cf512f66bd33107126595aac7938ffd4a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBMAT1000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573001dcdd586ee4d4cc02dac14fcf42ceb47881f69c3c72a915a42fd424238d. 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/GBMAT0800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87aefd1a0511e6a197f4fe95004d7d5c042d11c02db3fdb1ab8dd2942e40f06. 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/GBMAT0700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced26014b9223d45ab9d04dd807540500c42aea337cb90f319f3318975da15ee. 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/GBK6Y1111002.
20 Jahre Perfect Lovers, Mixed by Chris Montana & DJ Soulstar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1cd64539c9ceee49cfe03dbfe769bdb7855918ce20962c82e32c3d68bae272. 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/GBMAT1600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9292da8583c462f8d44b665d43d8f6c35e3e12cbd0c960775757d4861dc30110. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBMAT2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4236bab7e78b02c610647d2c4fdb4682c0bdac9b5d771c79a0e4d3049b4e015c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DERN41900026.