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 0xa6890a587a8e9b5bf4b295a3b8e40afd9e57b4fe0df5ef048478f29455fd718a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/924eb3b6-2a44-479f-a6c5-5094010dbf9d.json and https://artists.proofprofile.net/proofs/artist/924eb3b6-2a44-479f-a6c5-5094010dbf9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hunger and Love (Tribute to Billie Holiday 1915 - 2015)
Italian Jazz, Vol. 1 (Le 50 migliori tracce)
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 0xe90e331976ee040388b8af05d15287ba404fac8f0e13523cedd18c65a5595001. 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/FR6V81271872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc78a11b6571960e13220f0ce0c886cc1a1362cf53ae0d2af0bc816050bb3fcd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81271895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bb4ed5443516317a7371db97a90149b228605f450098d22fe43bfc6a17f763. 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/FR6V81271907.
Sonb (Something Old, Something New, Something Borrowed, Something Blue)
A Male Walking in the Cauldron (The Music of Mal Waldron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b912f610971f97a6b70a6af398704ffef19d153d3b9d6984b03905f1b47445. 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/FR6V81041957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2b3d94cfcb281b756469bd1b2752e247b397eaaa2446c5fc327803faa4c46a. 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/FRX201777629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a08a5fd3a624eb10a37a12ac3e5be63fd703048f1c9d3adc5dc7bb9dcb50e60. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX201777635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa481139d9979dc84afca1baa4ff1243b4d8506ef5d5348e31653f60a9e2cc6b6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRX201777626.
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 0xa7596af4872e2d76cc849864de768f81f599018127099cbc84b1e52cb49751a1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRX201777628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d77a54885dc38c9b371dbd9672299e90122e07c24bcc785d33537447514fca. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRX201777630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0d22c1cfd3fd9b84f93e4a579d1076452e154de5a597bd25a3513e7593be56. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V89302638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef51ef271c41b9b6d08c19efb9a7348a7d265066d475eb66e027672b9bd7787. 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/FR6V89302640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b153c9ebe4368804d46d4988c8b40d9790f88c7cf2c68fce3f4b7b29cb813ca. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR6V89302632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bc67cab18cac7ad71fc6c3c1cfd8a7109e0f894514ce1b64be40bb2a36c470. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR6V89302634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ad08ffdee710d978a181800380501a55b75fefca9a2bd73ef2ac505b18f32. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR6V89302636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e14816157700cc33f2a34ec059f2254a0d3ab6f2ca87ba1a0cfd1e6b9d6c7. 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/FR6V80107924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc784b4f93d4d9230b7e9e033f05491ad34048ec4f1d7ce37e5ab7a1af44d74da. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR6V80107920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0738deb48e9464830b19dd8bd3e15ea746dc76f31ab65a31210620ead0a753b9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR6V80107922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7d147522fde0f71ef690628487c7aa2b7b062e85984ca4e00ab49a5d9eb17c. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEP060000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d3c9548c889e299a51b4aebd53aec34fdefb9cb86627faeba97dc055f600f6. 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/ITD560200756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80465be5d7cf6ad9f33ea98c633d7164fc159809fae4e6f48a1d63f44f07367d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITD560200760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006940740b52f691a4a057562a6e22377318357b639aae1e608bdc89db7c3867. 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/USA370541928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdcbe63974969401a53b8a9f5c9e1560fc4b261bfe476ac4015dd88016f6b20. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA370541933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e6222c38d032d1df5a4c951cf6dcd7922531251819ffb936615fbb95103458. 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/USA370541937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb59478372888b34b007a0d427848adc97b26668de824c62d1721988a6e5e67. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R1811225.
Saluti da casa / Ho dato il mio sangue alla musica