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 0x552d322391134bf09b1b4fa4102a15f3a4352849a4b99c0a80be602757dd6141. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/505376e5-7e32-4f78-9889-da902d30703b.json and https://artists.proofprofile.net/proofs/artist/505376e5-7e32-4f78-9889-da902d30703b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Nutcracker: Dance Of The Sugar Plum Fairy
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 0xfd37694fc84ffa0b0338e7e4be62aaeced3dbdf0d1dadda040c6c36bd9ab368f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USBC15900215.
Carnival of the Animals, R. 125: Introduction and Royal March of the Lion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7374d11f224d9665f2be572a5b86d8a9d01701c06ac7f66ec34c6a050d1bd8. 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/USBC16100202.
Carnival of the Animals, R. 125: Kangaroos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaf112fd4e649792e7ad122709161131ab86cde004135c73a059ddea158c156. 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/USBC16100207.
Symphony No. 3 in C Minor, Op. 78, "Organ": III. Maestoso; Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc33933e42cd4b6d3134458a41d24bde3821d2314f814465b3738b0749adea6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USBC15900250.
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
Carnival of the Animals, R. 125: Hens and Cocks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fde255f9e287dfcce73e7be9ebc311647c22bfc162942e48afa5c9047ec355. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USBC16100203.
Carnival of the Animals, R. 125: Wild Jackasses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134407f1c160d99cdd9fb1bab2be4718412ea6a2a105d924f1e77d6bb5425024. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USBC16100204.
Carnival of the Animals, R. 125: Tortoises
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ab9f5232f448effab33a14898260716f046290f8d2559c16b50bcaf0a89149. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USBC16100205.
Carnival of the Animals, R. 125: The Elephant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127c1064590d226a9cc4da071a93b5a118c3c7ffa5562e2d1b1c68f043efe9d6. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USBC16100206.
Carnival of the Animals, R. 125: Aquarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa432bb6698322201d95c232dc6e294de861dc6ddf979b92a512faffd6010eff1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USBC16100208.
Carnival of the Animals, R. 125: Personages with Long Ears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792e0941681a9cdab16de7c0ab58ef0daf3033cf9d3b5b5e411ebf158719ade7. 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/USBC16100209.
Carnival of the Animals, R. 125: The Cuckoo in the Depth of the Forest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a46d858a06a327f60cfa98b82c20df547eae320c70fdfab7b74c3a8d8472f2. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USBC16100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b71850f0cd12c73720d75fff4798f43fa04854fcbd5bd67b0a802f2b85ce019. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USBC16100211.
Carnival of the Animals, R. 125: Pianists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b850fd6385b876f91c859c476e88a8e66e4b4792c1a85d98348449d09994c9e. 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/USBC16100212.
Carnival of the Animals, R. 125: Fossils
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488c4038a76313ba3ff1024b58a57289b623b63623a84c6a48bda84054516ca6. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USBC16100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3398623e15d8f2036b0972dabf80ac9d534702a2d0a868ed7afd80941dd4a6ae. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USBC16100215.