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 0x43856a230ada73b6eddb952b09027f51ee7e838fdd7f5ae10d0f4628aab6ad19. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25dda956-1389-4f07-9434-bc464cf7c9e3.json and https://artists.proofprofile.net/proofs/artist/25dda956-1389-4f07-9434-bc464cf7c9e3.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 0xb606c011695f1bcd80711af2a0ec1ffc85a293e683831e9c0764c5dfef963c9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41093669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532d662fcc96bf1ee789f07377b29fba1a28005a572e11110e72c7fa8f714dd. 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/NLCK41078745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37592d3a5bc2ba5427790c966dc78b41a6b789b2ecaf9b28e55108d50535b989. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLV61927717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2a0dfa8f3d2bf26f2f5c785eeb68217ae11cf13a166563513020cbd169fd36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV61927718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057a0036c2cefe45f2e4639a640df1035bdd3b114a17b28f70fe62fc0f5421b. 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/GBQLP1901232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a373222cda44485dcbc5528a53c663a3447b0e128180e6781dca79f4648d17a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQLP1901233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe30024c17f4c5bee74157b15cab7ae05a11772a85a5d1c698178b3cbc493f3. 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/UK84Q1900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484fdd1f52ccd02b7f22ec20afeeba2a993fd51b788e0fed4217d2c0e4911386. 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/UK84Q1900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e33b5d7f2de88c7ca709e2663fac0c002dd36fd94de0c5e93ab1fe05f63b9b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK84Q1900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce72d62fe2b98b1e33ea3279733903d38ca1c8f0a58fbd1f6848c0475af3155. 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/UK84Q1900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e93b07541734979e60fb5e3263ce549142041f840be3804c823fec667cb311. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/UK84Q1900221.
Nothing But... Future Beats & Bass, Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6675ad4fc6971e36213c0ddde3c9988d59fbf458227c78ef33f87e8483c5a0. 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/GBKQU1763696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6863c8fba66e0a053a72a310cc54cd52e5166a62fa443d293168528eecb379. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU1967061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9bd6acef272a30fca3edc5a28c02d9c3972bc8053fef1e65188243825edd10. 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/GBKQU1710295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d297d84bd2b32412ae1aff93da32ddebe510e17ba06e00dc59a94570bdf6626. 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/GBKQU2031024.
Nothing But... Pure Drum & Bass, Vol. 21
Nothing But... Underground Drum & Bass, Vol. 18