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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbac4f5308d7995d6735e0e285a1b76cd7435ad3df05f3a5128f7c226e295f8. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b30bfae3-01e5-4463-a211-ab63eab0aa2a.json and https://artists.proofprofile.net/proofs/artist/b30bfae3-01e5-4463-a211-ab63eab0aa2a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6913cffddc44c8dacdeb5dea0f2f194edb0560a76e00571e893ade0d7dc35ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USJE72318402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dce0c6c5a8b6e92b629f22ab8066387fd2bc0196f029bc9a82f742819b82b71. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USJE72318403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074add19d27a1007425cd09489893fb5b4eaff6b0f2bb43a1a64804b6a90e74. 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/USJE72318405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f411535f836a9893a1d53ff4f26ad13a8daa59283678bdc3e8393345cab54ae. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USJE72318401.
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 0x9178c1a484575ec62c03f1ade72a03ae3868799b50d3e5999d59cadfe43a7c5e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USJE72318404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318bfcc0d8cc4804c2a01ad6c44ecebe4c7fc0081f2bd81bcfb4b2e856f408b5. 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/USJE72318407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb37495ee233b9907a31b07064d3cdd2ec817500a10ae17c3af4540c68cf7051. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USJE72318408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd1482b629e868de3060f9d186ff28fab4ea29d1c947fba58c83a0d89c3266b. 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/GBHLW2300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ce3ce4d80e249a3ce6b6006048ae1c80cb01e9dfc04b26803d195e823e1697. 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/GBHLW2300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58ee5a3322a1924d55cec4f19aa6cc7093602fed9825216184eedb42d0ccea. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBHLW2300713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cedfd139610a100b244a17ab08a8b9e03853b90d42de41446fee32825b13bb. 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/GBHLW2300714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b87418abd82be5a9dbd6110b2016a06a5e2e1bfa23db5c79965b1f92006c6d3. 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/GBHLW2300715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf764a6bed1c4f37ec610d0ebe57dfb06560609c740ba984d4f4de49799cc6f. 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/GBHLW2300716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14aa61ae1361cae8b9aca16fe681e39e4fff3b68788c15b59bb1e7ff5690f8d. 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/GBHLW2300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c461d0b6ff1271a7bf0440c2a84fad04131914895aa317a82d22f36697a5d4. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GBHLW2300711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dfe8190501ebd5094852b29cf6e3e996fc42da8cca21a6a22e7c10a8335c6d. 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/GBHLW2300712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a358f96253fca876686c630ab4e2468ab2afdf395fcfc6d9ab3e1b73d8b9149. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBHLW2300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78ee95ac64a3074dca7299913d504f1c1f5a1b0581a4b084105b81b10b99505. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBHLW2300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac6b25bb0039110093eb347c849214eb4e3290dfcdd2067fa0c8a2151e65c64. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USJE71810601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecc4b864c285f0ef2350fa793f0cfc28f621b43952f979e81a38d69807b1fc2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USJE71810602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58af18709b84b4344f9af29756db55c1d2acdc3af536720b00846f1ab76505eb. 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/USJE71810606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f61165a3bff5114eb5d815ce18009012489e95d159a6698febc333dab2bb237. 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/USJE71810607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dc234b27e63e4b306270bdfd0b41787f36ea9c27eb6b28a0c9ecebbbe0f97f. 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/USJE71810608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ff8496c0668b2ad14fd6fa2934f1e517927724beeef17b9f260b35ad52aa3. 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/USJE71810603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd3e97f3d942749e9ed1dc05792e5726b15180d5315c44954157ca5fe729c0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USJE71810604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011003d4b52ef470924ebc3c7eb2045e596db24cf0fb84ce5ddf4d2d52b14063. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USJE71810605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9499d4d26187169dc3f2f1c69324f619388613795bdab9bc9d87574657d1c9ea. 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/GBHLW2202650.
Desperate Shriek of the Writhing Limbless Freak
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1949538e717c40a3e42f20c64261408bac0501aa307af390b533f67b28a91b0. 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/GBHLW2202651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201521f125b68b7df84b25e48ea949d9db8e0dc1605c2924c55ce4b382916cb. 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/GBHLW2202649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a7c8af8b8be82669e81d9728a40b24f9c3eec5b91b400bedaedefac33ccbd1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBHLW2202652.