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 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 0xcce0c081e64d8226c7ecf5c6c8dc44f9dc9b3dcd2a0ab71f092c6c20ee17a54f. 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/30a57b2b-576a-4550-a30f-85f205fc4514.json and https://artists.proofprofile.net/proofs/artist/30a57b2b-576a-4550-a30f-85f205fc4514.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 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 0xe18bc61b337e8a211890ea622a19295a13d51985d4d09012d6d88040e98b4251. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMBZ92008163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcccdd6742ebe5bd77dc99c6ed668728302f699d14de5177d75b2f55d43d09d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM7282078150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff3ac698b7f7ed3457173f897b93241707e9dd6def996dd740a06e8d50c410c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMBZ92008161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294bbbe7da9e36e513027db462b8db89c53a635d5c71616523f58c5e7dff17ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMBZ92008164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36945de4a0f616c71eadeac36d974405c85ed33922bcab049033fa7f0169acfb. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMBZ92008165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce9adaa197ea04a68f3ff134976648a2fec29245d94f7175164c6a8c193747. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QM4TW2129209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171d7a8a488984041092c063f4d954152be7671ca678e9f4c2087c2bbb7a91b9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM4TX2198647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055fac52619954f99d29ed8f798dc80938c813bd3c09a493736bfdca6c08cac3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6P42101674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02436f1b0355bada1a0c24d27be7ac326f1f9031477de0c81dce8f8fb3707582. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:46:56Z), 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/QZZ7L2443864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7df7370f9b643fdfda5466d8455192b61720e6dca02ed5b319bb4fb788d5cb5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTBA2200671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725b74cf5d5943eb5032ddd39518a576ce772058a0a06677a14ead7b8abdd01f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6P2382418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58af635dc4baa8a72516e5c1d5c1fe3380513cafa0efd3386a2f18b7750b659. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZES82430505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec4ab024361a137dfb43eb7334b2d258c2bb3bae761be306acf65aee2d93b9. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZWFP2419668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9305f477d202f982987ea0a50fe77ba92417d6fb4c36d9ebdb5793fe07686. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/GBRKQ2500552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ff2a8116352d91cde08d0a43748be68619c309e04e7be13dc01d515d6e8c1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USLZJ2593634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d333ab0008a1144c81643127c5f865c9ac54cef8c4388e972029bf446c98ab9. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USLZJ2593641.
The Buccaneers: Season 1 (Apple TV+ Original Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091d8ca63b4b7b48308e228128f513775dc9c1d9580edc3215a96ea41805dcdd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12308457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716fc26ea4285683e033f94b010b3235996d9a8f04e11a997957b532b5db1f8f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMV8L2029209.