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 0x1e280d39e743be820994835c38007ba16aebbb00bee4722953234d49ee7aceb4. 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/a417e609-5ff8-4d61-85a2-e8d498048da7.json and https://artists.proofprofile.net/proofs/artist/a417e609-5ff8-4d61-85a2-e8d498048da7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Misérables (Highlights from the Complete Symphonic Recording)
Les Misérables: The Complete Symphonic Recording
Les Misérables (The Complete Symphonic Recording)
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 0x9d44d51bc881916fcbe5a1e6ff12ddca541da29f35af8f250d382831d384aa40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBKB9920101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2411448763b9623d34f26ceb79866119475a5562dc24171dae4aca342941aa58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBKB8820103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0973f6ae7cd9db1ab6134959dbc17b609c5f8db686299e39934d93691e89ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed65f757d616ec5e6735f06b638bbef3f3fa4cb724ea4df0374e0b1a57bb6cf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6be1074d45a4aba4b0818062c4cdbf26b360a23d9c8222f4534551f7ea6e0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBKB8820112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae70eb4e08424f8df9ead3aed23d65ebaf4ccd70ad5133da7b0a5eec82396037. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24f7abe405981c68cb09401ca5e286cc03717db4d8c90ad2eca0b22ac78f823. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBKB8820118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7445d453fdb7b746e53733699e85ce173dfaf0b25f73c9c0200726c91e1db546. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBKB8820119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5babc716a5fd31504b0aa1f94ba74712a780e0ea9a19afa78457968a617ea922. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBKB8820123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7502c16822e8b2ee8c7d5c3c3a8bdd7a41d9d5ff549fd1a32af92f5fc8b42a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKB8820126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2579c0c7594949623926a66a5b7d5f38b4bc7c2ad902ec31d414d78539d43e52. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKB8820127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cab2fd1304a5f816cc426d40eee3a78be3e3d34301469f6368e6368c2d1e1a0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b3fc75c3858c49154db2f67d6db2e68600f5619a7b3e8b66de211ea1676481. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKB8820131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb4139ea9ee43ecaba1ed39bab89d013fd5d9ca5a99674881eed0ea7e434910. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf252647ef48c35db290ea6d48bd7c1474b838bbb6ee736b2297dbcbae482b48e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKB8820134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc48c9585b0a66cf341b6c5bc8412917332cd8bbf4bb8d1898a8d8b854c30d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5cb0243d82d6db7cade70d54023836557348ee052580b4e4614614e754409a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKB8820142.
The Wedding Chorale / Beggars At the Feast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311fe7230e9b9ed5aa413e599347ac8c8f20f0718ac30aa26e830eec9abcdb47. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKB8820143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dee3ea3ed734b91f146383b6fc2945b2043de77c66d785bb8be759f5b6597bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBKB8820144.
Les Misérables (Highlights from the Complete Symphonic International Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf47316e3e52627b9e01a73210ac72ab2b49578f21c4d0856fb683a86c03bafe. 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/GBBKB8822001.