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 0x13f383b70211cbeae83d48b4abb71883cd4a215a1d5e2e597e8f7a06ce3a44c2. 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/2d543ddb-2278-4d38-bd97-49c83d048176.json and https://artists.proofprofile.net/proofs/artist/2d543ddb-2278-4d38-bd97-49c83d048176.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 0xb8bdb47e59ebf98a26ef6278e97445f5d4abe80998b143a7668df84451b7c016. 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/UKACT2031114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa373c0131b684a3b993740e1ff486900cc6b5280b5301510d7306a089e334d7b. 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/GB8KE2161645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6629876c57d369fd74559cadcb6dd09763e642c06c965b120afd9b5dc7198049. 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/GB8KE2161647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87d3707302aed19320c04dcd296736f63a4c531cc83ff387a9d8957c23d46c0. 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/GB8KE2161648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86080b187c3ce211b3243ea3d7e47a01c63365abfe7240bad1c248f82bc0d30d. 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/GB8KE2161649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19610fa281f26fe2a19b90597ef1bc1ce6b3eac02e74000825ced2182a2906c2. 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/GB8KE2161656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a6ff47494266165a84a075cfb3523365264db5da0680b01d28ff182d699b3. 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/GB8KE2161661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb3f05f28a8c8ff19131e41c1afa427d6ca20de4c53b7c8a9fbdd6752bbf55. 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/GBSMU4196077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18312d807846f7c5dfe3d69b8e5945f5bc95473203bb36e1375bb93811165938. 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/GBSMU4211504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aa38dd7faa569383fee4fb1ff091fa3895a19a3f8cb556fd5a4892613ec152. 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/GBSMU4196080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9f4435d80e3c6ac3fffcb69b020e621a571828f98f42dbd1c8fd5798c34db. 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/GBSMU4196082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f4a65161cb69b437163dab51b32763410c16c53950b233310330a76251d6a4. 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/GBSMU4211568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0204752e088060c67010f04d5a8f8ad4f62bdccd27f38834df611c92359b084e. 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/GBSMU4211624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c070583c2a919831ace80bf394b2c9aca1e4c48401eb8f8bbf16fb22d15f813. 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/GBSMU4211626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe41bc5fe67b949d6e0749a8c2a98a4a7812714e0cf1683a382dc5ddbe06a0. 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/GBSMU4211665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cbf035e75f6ce513507c6b4341029c118307b765bc0b0c7b6fb189a175a78c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ1892285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a54d551ad32cba539dcb6cce8e876b1b1506ffb1c5e24a98428d6c5cac4d047. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ1892289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912e702a41115838837be76b15ef2beab561137737c1ae6d893b4980cc51b6db. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USLZJ1892292.
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
Dank 'n' Dirty Dubz 4/20 Compilation (2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc4bc5df6a5169507c6fe4988cbda32fe900337e78c06507e552dd93cc00178. 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/UKACT2130677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d9a28c058eeff2753e5aac4a1e136bdcc9ade921d20b814c653518a15ccf0. 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/UKACT2130679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec0b4b7e31d63b485fa63b242232fdd9aba22d7fdd2026f4a7da9a623b66537. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKACT2130688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66d9b982a536e44756c5d8d455a55338fd5d284a6f5699c72cb9315c6a6de4b. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GB8KE2212601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ddc19b4cdbfee252002c181137ea77fe6be382ffff2a5e3c082724e3073fca. 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/GB8KE2212604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54918df90c272acf25c66994c631378d0ca4bae014ebfa12a92060aa6114e53. 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/GBSMU4699886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cde1b6b2117623bf49c98157c5b88f2b4debed5bc755d4d66776d40aad1f5c1. 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/GBSMU4699888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545e2d466de760612267fa353e8cecb88004bc49967309667f7f450ba8d46269. 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/GBSMU4699897.
Elephant Tusk / Reality Dub / Train Robbers