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 0x0de6fc517b6666d3f3a2c8e249531983e6a3f1de616151121612afc50736569d. 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/e94869e1-aab7-4adb-a7b4-3398e3e78d37.json and https://artists.proofprofile.net/proofs/artist/e94869e1-aab7-4adb-a7b4-3398e3e78d37.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 0xa62e37358532289486626b2122e6a483669a7829505f31e44ac93c57c090deb5. 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/GBPWR2000036.
The Sound of Drum & Bass 2018 Sampler (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0270fa4c45a7a87769d48bb276f513004f1ca04aa4c9f204f202a2039b1e453b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBTMZ1800800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa648bdb569a62ddeb8b2f28152771faebe734a1ab620aa916e752ad1b3a2565. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBTMZ1800803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed9add05c274c45fca739e2d49d19e37483362b6d660eef141036558b8b045. 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/GBTMZ1800789.
The Sound of Drum & Bass 2018 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0e2b3dd3ed42a6c8f66309522d44b66267dc7ec2c5888683b4a9765c819fe8. 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/GBTMZ1800810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f145ffd56ae4e7d2f4a823a86245189750794104c6bac5019143465cecccc9. 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/GBMFG1800889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69306ae1d0e8206c1da09aa8c29bfd907316331be13bdc4557851c810802087. 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/GBMFG1800890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac46aea383b9f62c863921cd14ad42a49f4261dc28382cbf45ea08913603ec4e. 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/GBMFG1800891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94cfbb635f30d76f5be483be2ed304a141a41f2874193d3e5e628d99d8d672. 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/GBMFG1800894.
Oblivion - Drumsound & Bassline Smith Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2ee1015fc0103702187476affafaefbb2aff84147131eb6163dc20b0f2d42. 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/GBMFG1800895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36e2385b7ee42b41aeb9a41c0cc8510f9aed807954da086450357736da1b701. 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/GBMFG1800906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b8e322b8f0b55cb165b6dae2a8026eec524d087f2b01639b0a8a66cfbb2fd0. 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/FRX202125186.
Drum & Bass Summer Slammers 2016 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95920d803b2e2d7e9c15b9bc893f628413c6cb9ff377ef5f4ab107e7717ed4. 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/GBKQU1673420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8f5babf074663f7a36227a6e3463d1f5952038eafd2ea33bf41f5a386a4f2c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:03Z), 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/GBTMZ1600480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e495309b1d7fc2959b0e4019dba4bffce35d248047471345877af54ceee48. 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/GBTMZ1600482.
Decade of Viper (10 Years of Viper Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7caf44fd7a0ff0788fe0b471def1b5bea696aec72797b98b8e981fabb2360cb. 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/GBTMZ1400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87237a87f99b2e7296854047a26dc15b5f629cbda1e0f99376e47bed84d5109e. 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/GBTMZ1400314.
Drum & Bass Summer Slammers 2014 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8d266ead7339bc953df6be5d500daf1f711b488a75e70b53cce0946c6d7c93. 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/FR4GL1110247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6fd77d20e3aa8201303417b81719bf8e0b08f924092f734aee239a4cbb0fac. 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/GBBZH1300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07d05763fdcc73ba24e1314974928589e763294963686b1e7b4dd134604106d. 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/GB2LD1900392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e9edd2a3fd4d76cbc5084ba9855b422f81b0369381515f5cc3c0c7cfbbeb2. 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/NZSM11300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55acace39e954899388f0e5bba4bb6148089dda9cf36b41777e397766c48d1c. 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/NZAM02223296.
Annual 2024 - Sampler 2 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4e0e271b96cb10f26dc18ad06127ce72b623e84f63cb81c73761917d887659. 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/BEN582001266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d68c6b3753ac64134300e0cd112dd8e7cdf4b2fc3f468a05803ddcbb9402be. 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/ATME82011701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c29e4836f0afbe625842bc3ccb1783e962fa3e523ac95073e8a07307e48d7a0. 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/GBTMZ1800900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2659eaa9d7a1a1edc4e854c8930bd5c416ac990f12e95c33be06225a6ac1c8. 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/GBTMZ1700738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ccb66d6680dee041deb358e72c5e92b3a34b172d1647c3f804279c1a321e7c. 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/GBTMZ1600451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd548192f6e32e9731c9ecce01d818b8dc6d7dde7f5b33c2b0bfad356a60028b9. 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/GBYEY0900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8566c3d44a55c042e7e454c53c1759f11086cca1af4c3e1a2ed33c571666f0. 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/NZRI11401961.