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 0x8d2fff57531e79060fc146e27af3059ee99a13eb325f4ac87b1fdb7ee003f221. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd02b7f3-e345-4754-b1b1-d5b03d35d898.json and https://artists.proofprofile.net/proofs/artist/bd02b7f3-e345-4754-b1b1-d5b03d35d898.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 0x843292623c425ab8098f6c292441d116df584e2de27b3dbf1f2969747becdc4b. 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/ES5021500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7857206a8f2ba795b1a52dcfdf18c993d7518ba24eb2ca67c795274fe2707b. 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/ES5021500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989f45f6e1a7aa6280f490b93736435c53af56a1a739fe95e55a5e3622b06b7. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:00Z), 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/ES5021500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dd636d094096e88b97d47965acbf69da8bd8d9a3cee39002d51e7c4deea6d0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ES5021500276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb1285cd54916b1bd61891bfdf129560f673c94ee0e567cd62558f3993423a1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ES5021700727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2062490311266a30de76b02b3757f33402300902a2907ef3f5396c2ea6e534e8. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:51:07Z), 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/ES5021700728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034cc9f999551b60e7cc23ddcb9ff3f6ab6c2f0dd7274cd7fb91ace191f80252. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5021700729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c554f9fc2527d1c13de5c45044c865fb3b260cffaca9e02721e806e6f294f0. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:40:57Z), 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/ES71G1835498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64da5fd4ab2799029fcf8bd7d831496476ee4b8121fb38b188c70f6149baf481. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:43Z), 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/ES71G1835494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5071f165156a874314de460dd011b4f5a3f4e75b211d7b87b1bbf9491e6ac4. 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/ES71G1943600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8559214674612efef9a0211e482de72d94c651aaad8f34fb52999193d7107. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:35Z), 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/ES71G1943601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb868effbb5acc18862f88256bf9e7249f6de4bd2a0e76e901bd408f011cdd401. 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/ES71G1943603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06780877f8df022823c7129c89bd6fb124955c5d59ff1d1dfcdf08263de39dbb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ES71G1943607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3597b307384c1cd7487a732eddd2e34cb4e37b00af7eda090f644884d862e8. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ES71G2058426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f3bf4543d5212d87eef81b7afc256012849daeaf24e766a774f8f1db4ffeb7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ES71G2058427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262c8f12e80a7ac79c68433937eced62228c373c552b9675f3e6fa55e05f1b40. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:16Z), 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/ES71G2058428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a57ed544315b6d22e3450267f766bc4824fa8f52ffd47f92b076741ae7cf466. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ES71G2058429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64a51182a0d2f387cd7a9fa15caf4dd24c06150f94cc8951bd632a6e4a36bc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G2058430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806dd42576a4ee37df49553c5899e3be7b9219bcfffe9471e42c0fd917255d8e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:14:11Z), 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/ES71G2058431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ca85b950cae0601a6a1f8c941207d795924281fd80862712b0f0811d87a190. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:56:00Z), 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/ES71G2058432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa258f382ed5c3f5196aa5f1a94ac27820a940b61fd1ce604836b56febdd2547b. 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/ES71G2316155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c0f444ff1d2510aafbe0a61c0e52d83350da68aea901d6af5d53836bcd31d0. 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/ES71G2218045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba56ce2d9cf9ad43eb7ab65cd68a05aeba544b33b9cc1201ac5b4ff23dfd51b5. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/ES71G2333309.