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 0xf52dceeb0a1784b1836b3060207e28ec6221551c897e40431572d0000dff9e3b. 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/55e7c86a-c6aa-46d0-b362-238e899830d2.json and https://artists.proofprofile.net/proofs/artist/55e7c86a-c6aa-46d0-b362-238e899830d2.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 0x90b80c27f72d42f5faf68dd11263d84499ea84b7359ef1b1780168e0ab61e1fb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/FR96X1656173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa925112048d5ce88c74b1d0778d28cb4194b11fa01889a2c0e54a03d35db8a70. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/FR10S1748926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe25282ba93e8d4ae140dda42afd095cb9dbbbd21dddd214388a40376685f6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR59R1761211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532afb8b99d356e93e6644529f786df76da45dbd2f58403d25015fff9a36c1a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR96X1887585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b11ed84a8db0f9136aa9b276f43eb2ee6556f494ecae78d1eb18c3a78bd89. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR59R1904907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5046c80c40d024684aef4f872764b1cd806b065009a46209cb86d49f98050be4. 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/FR59R1922168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdf40598b88e15ffd05f9c7dcdb50ffc0365545b7aa03ec6b88a46fe281bfe3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX201994284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4ffb62cb4414a68127fae88dbf380e13dbbdff92c6dc6ee85a456ad6fccefc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRX201994290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0189979f3419d213bced3bb3421693167f483cd7e8d7868f5f2167bfeebae4a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX201994296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc64ad4547691fe1c30013045967edec015bb69db199e61fdacf8baf9f9555. 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/FR10S2067293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd592315fa930fd5eee183a4d8f909a1ca664fbf5e6c387e120bcfaf6ed0fbe. 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/DGA072182516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c23b3661639109d03affe212ebec33dd26bbf2d24e3e31f9946dc38c51a9f82. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA072182517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf0061719abd49f530d9567eb93070e6c5fb1be01e399f39ddb1a4ea44a32f4. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/DGA072182522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8298fee4c7dc4fbf87ccb1bd52085e63c1649cbbb966a22c51a3cae8924bbb4f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRX762125878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4be3831a1c9e9462b57da56a32bec5fd81d62ab6b06ca6f6fdc203caa28d87. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FRX202229355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2385bd52da7985f99a7b5a1df75663d290717bc84a9689f750e3a0db85342af9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX202229357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc2609fc5d140227720a84ed72823f3e1b46be73f59209f4f261735505ef6e4. 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/FR2X42308134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f651029c48e9b682e4b692cba4c196a1338d88e2fd312f81ddc600d3062763c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR2X42308140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee97e255b51cfa9a7346711268c08bbad21e28e4540511563616544783a1daa7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FRX282300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8f7610b753688befa16bca539b0f942a47b1d767bd20bdef9d92cc7f597cd8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX872377921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e85a03e84809171f89a9d64047f69eeccf160825774d048bf6751d4d9187afd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FRX872377747.
I Didn't Forget, I Just Don't Remember Well
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d89c77a90a71ddd1cbe3912e256cc5549875b3897ebce07519516e6bf91a3b5. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DGA0H2383385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83803f49ac13bef16bd08745d3fb529a13caaf42aad414cf24b27d8974ebcb06. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA0H2383389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b1b8223baf1a13a0a99721d3cfd83e493ff2ef49885e122cc37bfc69cf590. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DGA0H2383392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0084a44a4ed1b9e23bbe9ce57075045e5cac7d1b4a80ca9cb958d3799630c8a4. 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/DGA0H2383397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3659ee60c12f7b2631b0a843be39caf945432f3e7815ce9199d1d853d7220f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX282300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41a75fbdc5e609a4d8d635cd8ca2205b62ef72af586d4deec293d62fbefc1ff. 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/FR10S2462212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7668addb9010699d9163de70de5bb7a9df07c4239f3fa035a4c0c5af2725b5dc. 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/FR2X42459777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d9d32e65506f6c2c4cda29a8614f97d1a3a3cc0f27087a3bbba6dd8e83dc9a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRX282456430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682070c92f936d63eccdd0a7a037e0ce01550aee3db971b19eac29b30390858a. 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/FRX282456386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50d8452db06280ba34fedff96604330f1c2dd94a9f599e9a5bb1d3b1ee26735. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DGA052407040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937abc14f56b8497518813db311f7750019e80502f489716fce43ad5151afb9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DGA082464764.
The World is a Better Place with You in It
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf220c85c94d5a86222e562a8486344e407fe91fd8cb216516238944177c158a4. 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/FRX202513165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f5196eec8c37086d80d45d4c39c5df3464819bdfa73ae40d154689db788aba. 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/FRX202513166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c59e299a16699670fc79e9f4837f0a689ed8903923f81e7a34ea49cdfda4f9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRX202513167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be73482ae84c4157a3ad6e98d9790cb6ccce5fea5882a917d3497bb23ce249d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRX202513168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9074d717acff932aefb9846e76da961dab665ea36be988b1d53a8d54539570ba. 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/FRX202513169.