thumb|Juno in the Underworld by Jan Brueghel the Younger, between 1626 and 1630|291x291px The underworld, also known as the netherworld or hell, is the supernatural world of the dead in various religi
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 0x365b8ab005b7c8779977aba6f90fdf492714a8dcc088ed6f2ebe4957a63b558e. 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/35d4c4f8-4a96-46d4-8add-0a89782d0713.json and https://artists.proofprofile.net/proofs/artist/35d4c4f8-4a96-46d4-8add-0a89782d0713.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 0xc710ab9739f2545fe48b86cea40038579077c7a4c7f60ac402131eff6d35719c. 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/GBJJY2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df98f6641798daaa645433e835f186d50b1cbc51067f7f6d192a37b2b805afe. 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/GB2DY1900449.
Border Country - Adam Beyer & Bart Skils Remix / Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c12054b70ecdf61dbe83243553d12887e3e8f24fab231aff18212f4b030c65b. 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/GB2DY1900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9fe172a18af12e68307596a55480dca1938fd9005cd6db1373d42bbdf703ce. 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/GB2DY1900504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee8c22cb29c16faa573deadf06ac6f68c6f22ae4cd134151e359bc97b47616a. 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/GBCGL9800026.
I am not a woman, I'm a god - Underworld's Drift Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604a7fde8261bc72f595ef6a85b207b7023a965d929ef19f41f32eac5e596d2b. 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/USUM72117717.
Toolroom Records Selector Series: 13 Gabriel Rocha aka DJ PP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b142913a94bccd824e4aa247d60ae27262ec2899e17459a61e5fe859472d06f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBJAJ0900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8803e309fc2123ecb4466e480ded537b022b9d2b440e1fff05e774588aeedab. 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/UK7EF9500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4692a9c280d0ee2583f620654768a54faa15b49aea9051bd81637e1abd4bdfa. 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/GBARL0900639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d1ee0b9c788455865c39f5df895f93cc25a49a93fb9a72ec1f9ee5fa57008e. 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/GB5KW1903269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d779fcb3db8e1da0eb2b8676a23c55858677f015cf2b9a0a4545d32228dc9f1. 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/GB5KW2204674.
Crocodile (Âme Remix) - Âme Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56684bfc4cef2f25087bd079ec57cd69070fea7859a6d68460040757f752104. 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/GBJJY1200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336fd01d21f304be6957f7afeeb4a1fd091f14560f157ffea85e682a659c46d0. 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/GBEWA1100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bee5d90b8e2285b9e89ebd4e6007ca3ccfbcd967fe1383dab04ed00ad58ca19. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUXN21520239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dca40e8300cb9c55dbaa1ada13276147490b6f448d2495dd9cd442862369d31. 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/AUXN21727792.