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 0x5f711897d9fc12b00e3537d1e01a1ff0d187bd1f4621ae0ee070f99bccd12d89. 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/891b2252-05f6-4811-b808-329b63c51d25.json and https://artists.proofprofile.net/proofs/artist/891b2252-05f6-4811-b808-329b63c51d25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Singing Accountant - Songs From The Movies
The Singing Accountant - Beyond the Sea (Vol. 2)
Zip-a-Dee-Doo-Dah - From "Song of the South"
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 0xf82a66752ba83ed764079ef89943885676dc77e4e81ec28e0dfa20b025d9dc0d. 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/GBAJC1200171.
The Singing Accountant Vol.2 - Beyond the Sea
The Singing Accountant - Rainbow Connection / Solitary Man
From Russia with Love - From "From Russia with Love"
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ba3942211bca15fc24bc754b10c225c998a01144b5e5c2222dfba82248ea3f. 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/GBAJC0900451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74adb91f8e179c4e41af52530800d149134e778f7dde7814a100dcdfc5aabc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJC0900450.
The Impossible Dream - From "Man of La Mancha"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4f6670a2b32526a6cda4c4ba32f12cb3bef0ca064539f98f24f4ad1d57f80d. 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/GBAJC1000199.
Raindrops Keep Fallin' On My Head - From "Butch Cassidy & The Sundance Kid"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde06c64f6145c243804cd1dfd91d25849f9d468e1308e0387bf8ad798bc73f1. 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/GBAJC0103665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde06c64f6145c243804cd1dfd91d25849f9d468e1308e0387bf8ad798bc73f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAJC0103665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7190b6409d969db47f1572647159c05d8875e974e78938b36caf94f1c668a4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJC0404468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354975cbbc012f2c87d15f1b0f278e44c5dcedb3c9a3a7761e11bf9efb3d5a78. 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/GBAJC9800999.
Battlestar Galactica: The A to Z of Fantasy TV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3129f6ecc5efd6e0c4b2f07f96e22c73f2b22a189ee4dc52470e303a994224d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBAJC9700634.
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 0xf7ce453dc63d287d6a80d89a0fad0d52a80b36057322a66c1256b00b4460195a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAJC9700635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11f11fd2cdd515fa25f4581efa3ce6c4557d2a9817bb30f1b17d44b6d345a9. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBAJC0900005.