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 0xe44351aacc57c78195ba0ffc32c16eb64edcc7de6bf640db5fda971babfe5ad1. 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/191f6ccf-1359-4303-8cbb-a4f275a49db6.json and https://artists.proofprofile.net/proofs/artist/191f6ccf-1359-4303-8cbb-a4f275a49db6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shut Up Everyone, I've Done Something Brilliant
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 0x78f6bcbfb6b67797bfebca4c1e10c9e78ed1df168f282b0adc998eb4c469991e. 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/QZRP52178023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eaf8d55f28f0b83dcbefe1c86d174f6af3a2af1cc824743f69378f6b011e0b. 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/QZES52291603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ca6d140e12424d448214012f15e61ba6f2ed55f6abf797ecbfd894fe8d0a9f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZES52291604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5604b9b9ff337c43b0b6bcf68248d7bd5ec4d652350672bb497e3108f348a1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZES52291605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84f03e1bd9f87584acfbbc5ccb540c44f0d5ac092e480426fa8727ef7945580. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZES52291606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24ea392cf560c51f949348bc8200ca3ad32e34abd46194f8fc19005c3237427. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZES52291607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c891f0b4a033abc008b8b3d85d3ae5e42560de9cb96ac48434296fd69afa5. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZES52291608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3339ae5fb5b7e797d540f8251d97c9d7303b9c00425e40c4e5ae225a42dd03. 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/QZES52291609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a2352038843cd902cf3f794321bb1221b16de956f2d8263fa5503f02a1810d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZES52291610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77c5f78cc0fdde609595f95d8d00323bfde8dacc68419f98dd4bc9ff6509a77. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES52291611.
Best of Friends (The Spongebob Squarepants Movie Rehydrated)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e153e46d060b68447ebcee71fea611aadf30c691bfed8b7dceeb1af4beb6423. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZK6K2279622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afcd79a04597f1b9ba75267c9d447d579c24bc9fba5c3eb9d6b76a806774507. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZK6K2279623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb48c12a333b5457bf6cba284cdea5169b2154b5c04cdbc86cb8383d34331ba4. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZK6K2279624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547c654280c3286bc615944d5d71d2fdbb80d4d4bc4bedab2d37ad5aac0147b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZK6K2279625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f931991470edb7ecf1a5f0fa83fc2ebd901ac07773996bd2dd78d2aed2ff104. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZK6K2279627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a983e3f0bd74d8412c6722b4aa30646bfe2158cb81a8c73be6f807dadf2dbe2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZK6K2279628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fbf7dc805d5a2187d2a842d2383383801e684f60c9f583a56aac76e391eb33. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6K2279631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba02cf99f3e69a6b67154177f55611050ecf6600146c68c1e93678941c35674. 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/QZK6K2279633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b29a654d771564cf245c2db0e960baa8344f19546887613a84bd506ac1a758b. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZFYZ2311237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d412e3c64546afe5113a7f30cb6a25d7e82b0c758a7b798598c1b45af41dfe8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZFYZ2311240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243ad33656ec97be4a0303e88ab14ba544a5076c8030ca08e56a0c46eb9d211. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZFYZ2311241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd357426ba96d4d76ec55f3d32e5add1c92e42ecb2eae2c7e3ae447b01b0706fc. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZFYZ2311244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc13778214fb969b3b45aaae5e51c8717bcc2744414f79c45e8e31b8731c0654. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA62351076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0e6a845b8af2dc53d9a682aaff100a67f61d22f2ec15af9c94960c423a4eed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN52378439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf748a2c76b1f36949b20f358a86ee2a532f77bedca98d229c8c01b6d698a5b07. 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/QZHN52396896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23086155f189cf2c1c7e4fd303aaa213a4e1b4c53c493c827f396691b06bbe2. 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/QZK6H2414266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bde190379ef33a3e3807b5096bc5df42fe1875ae6a33bc5136f7802bc23b57b. 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/QZES52498677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23086155f189cf2c1c7e4fd303aaa213a4e1b4c53c493c827f396691b06bbe2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6H2414266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77e4dfc568154d2eb13a42f43c3de56cf828bf88046798049c00d88aaba1de4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZNWV2486334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6b277eb1d60d4fdf17163b334050b09e3ed1d726fe38deca8c8cc3a8d10b37. 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/QZTBE2424275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4012f3a2cc63fb0a9796a217f2f4013655c46d58bf13db881935fada873d518d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6J2555415.