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 0x00f9739502c1cc026fbca217b684b0e19cd549c0ced8bc4691a104f05a03587c. 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/0a240482-f47b-46ec-9f00-6c1adcbf8943.json and https://artists.proofprofile.net/proofs/artist/0a240482-f47b-46ec-9f00-6c1adcbf8943.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 0xf2eed09bde3fca57c0dc1ad5077a7fa8ff2f211455bed63105d4f14b2ad0ea0b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USA2B0567924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a271c494ac754f54c5da7c2713b4cabf8038c0a1d54cd34e6fa73dfdd17b85. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:12Z), 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/TCABS1344497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbbc4ada41dca77bf8a614e09e3d0fa847565ff378a5ed1bc79711d36a13a8d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:40Z), 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/TCABS1344513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e079bf48046f7f4e0eae1f8f6ad3360b70acf0d32b4ac953c43285d1ab41127. 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/TCABS1344514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3825ccf258d785ee4717fd46b8ffa3e5c5aacae8eda433f560626f85470615e7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCABS1344517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9b3df68730992c1bb73b7acdbd9fdb473c624765a637825618ddeb0ca67fc2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:46:26Z), 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/TCABL1224483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ede0e389257b3c3e97ed1a01225dadfd9194fd6109bc3f1164a662fd0b04723. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCABL1224484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a00b7315f9d9f7f7469bcf17d168bcbdbddaf2613baf34cad4f72b7aa6596. 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/USCO91462303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ba0002ca4baa32a560275c7a42c308b4537b1bb57eb38aced0d610b1e9b004. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USCO91462307.
That's Me in the Bar (20th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d8f1d754aa17b2ec0a320486bcc3473adada0802dcfb677583b1269882aed2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USCO91769102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913f5d7ff7fe20eb79c711fa234f3047bf770893fc025b5c0507afc358442753. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USCO91769103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7179a8c0d9ff4ead80afcaf1f6c345821bb50d98bde092b3414b81da66b879c5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCO92075402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529f923bedad0b98f3b20ed1d362ebc90411bd6ed3e1a7a6f6a2503af4745b72. 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/USCO92075404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381d5f7a4ecd488618515136a938593f4fb3d7906f941a99edaf6bae8a64b5ac. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:04Z), 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/USCO92075406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10ab30fb705511b1d4afbc85759339f001b8b60064de5252f414e26c5e459f0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCO92075407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904ee182eaaf75cac3dfa2f05555ed219840ab6d355acc58d68f9e18f7051719. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCO92075409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6f4b704bc0e77b8187672a5f5e06ac509fb18bfc5c848a79167adea87cadb. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USCO92214001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c9abd8e54c71f051ae748f5e061351abfd8ec00defbfafecae4a3535003c2d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMRSZ2401503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed3aa8080fdebdc210ab7b5a732b8ce1eb16f524ef08b3fca924814131d367f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:53Z), 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/QMRSZ2401500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c9abd8e54c71f051ae748f5e061351abfd8ec00defbfafecae4a3535003c2d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMRSZ2401503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fd80d3e7536299dce1396836bf7378feee5d7ce757d25c5daf8927ed402cb4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:14Z), 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/QMRSZ2401504.