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 0x9a485cbc3450ad27d408b8a93378e3df8abe9be3cae3856a3b38d6ed4f508a0b. 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/bf414b8b-ebc2-4cb1-b6d0-2111c94bc246.json and https://artists.proofprofile.net/proofs/artist/bf414b8b-ebc2-4cb1-b6d0-2111c94bc246.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Restless (Official Pokke Herrie Anthem 2017)
Restless (Official Pokke Herrie Anthem) [feat. Masters of Noise]
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 0xcbde16ae297b84d6dbbe61c17e764ebea313acb64e12c05e0d61d8fab2a3ef25. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBLV61819607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b376c6a48025ee83ae70a2b087ca79210c9e0cce8c67065c607aa2cd720cb5b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BEFWX1908201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e62132e1c6ee261b7ce46405b63f922f2115720b37534c3278510eb2254f046. 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/DEAR42185932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fac38be4fd20a2377afe83ad8246a365836731d34fa2ee78ee1e5e611591a94. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEAR42187201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed667f78452ce03e37dc9980090738deadb9fc77fe5815b4d94316c4200be24. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEAR42167157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ac34bf86df5ce35c0f1e918c4d9a002bf39bae0d861b12526d3f5bb9a5bdb5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEAR42171106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676b30353ddf7201922b737fe831d76c0d31b6583a6d850c7ecb391d86088790. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAR42115519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a1e5fcd3f1b18c68cc2e1d23a8c57f38f50421b5880395f38e7a7d013c5440. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEAR42142481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be874d6e9be4278eda3ee1577a6877ce4cd0acb6e0a77355e8ca4634e1bc616. 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/DEAR42167634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb6019757b28877ef3aaf8cdd2eb76a5c4d4b5d905d9bb0a4d8a64b071c8ca5. 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/DEAR42125432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc807035dc84b10d03d1e4e83d07102ab4b63c6cfdc4ff821d8112a09624a67ac. 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/DEAR42189669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64bbbc652300e238be4173c498159d5fd95ea8075cbdcff3ec095000c0061d3. 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/DEAR42491738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb689e8374d6ed689c07a8bfbc4636d68662f9da4b159523d27daff4ab522ce. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DEAR42424372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21c900be690e8227f3d67eecf32b23525fe25f44f740ce6df974f62f27f759. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEAR42599479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242e717e09878f0a3489d14eab390711e94c2360c85b32445a3676018ecec7c8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DE1JN2470580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21c900be690e8227f3d67eecf32b23525fe25f44f740ce6df974f62f27f759. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEAR42599479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fddc282e9049992022693bdc0ef0e1bb1dd3c034e178db99309a7408e0b635a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DEYW82513397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42167b1719ed9a8630f098bbd8b6cdb6cedb56569a282e49f461115d3225e9ea. 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/NLS202400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70240f48e711b75e363914f4f20e2055cb9a745a82f8377efc2fcd3c6970f147. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DE1JN2354292.
The Underground Festival Compilation, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53e9b7d63047bb5e26f4663b3809c0cb5b97d44c3913251d7d355ebebced7ad. 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/BEFWX1908613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af41ac5c184a41e8f521a65a3b099cb2fe3e9db2f835f1e246659812f308bb1. 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/NLS161600465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af41ac5c184a41e8f521a65a3b099cb2fe3e9db2f835f1e246659812f308bb1. 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/NLS161600465.