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 0x69140672fa37c668efa7857e6652b86c145fc2ee0034cd7946773fdd5e8c8dfe. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c9cc53e-cee3-4863-b4fc-ea89ac864393.json and https://artists.proofprofile.net/proofs/artist/1c9cc53e-cee3-4863-b4fc-ea89ac864393.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rent A Family Inc. (Original Motion Picture Soundtrack)
The Circus Dynasty (Original Motion Picture Soundtrack)
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 0x15b70cc82c8a0f07378e4cbf2f454ebc3806c6af98a8e4ee29042b5d8ace55f2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DKZN51700101.
Tigers (Original Motion Picture Soundtrack)
It Is Not Over Yet (Original Motion Picture Sountrack)
Cash (Music from the Original TV Series)
The Gullspång Miracle (Original Motion Picture Soundtrack)
Statsministeren Helle Thorning-Schmidt (Original soundtrack)
Quisling - The Final Days (Original Motion Picture Soundtrack)
The Shadow Play (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d7f4f89fb5b9ee93591720fde71b189aad2624b8bc6c7518b639887842bd30. 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/QZRP52192820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518ec29e39d372e24266c898f0028e7b5e80565dfd43665efcbfbd1e7b94d005. 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/QZRP52192821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5809305f2541daac37f4ad63ba58e9c81358fa3e127037e735896edefc20c39c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZRP52192822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a839332080c74a7e632cf85de35cc85c819915f027530ab767e555a57e506. 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/QZRP52192823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d14ac45c816ec4f1c4e82ebc1c305ad823d3a9f839daa5c820dddaac2c92bb6. 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/QZRP52192824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f6651d30e8dfd232a14e8743f1d5488ec677d57aea2e23f525afd6185ff369. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZRP52192825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0b4bcce35b5d0fc1a236b0854c3e8158d7ddb2cc0d283158b8871badc442b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZRP52192826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0435ec1d02b571b20d4811e3af4d6fad7b54705b8c4cf4da8bc4c366122344ba. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZRP52192827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98410ca6d45738e08b73efbd1ca75d720d945b8252f7f1ffe5a388f0956e921. 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/QZRP52192828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7867f8d1206fb02d9f3adfddacf30adf0467b96a89d02d2ca88da69ea743b9. 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/QZRP52192829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb70ddafb4e54e33f0f074d8f1fa9ef42fd7d37dbe3ce0fc6a900d51ccea0ba. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZRP52192830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2b4083342e74360228d2487465de8d28e89da9f30faf6a3c113a16ec73b6ba. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZRP52192831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd160e31f403debb0695f1bc51623528c6b9f1aa75392063445fc86bcf1c98. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZRP52192832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4bccf321121f868175e6b32c1c08c54a9699a597d8535a42eb05efd3f8a2ca. 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/QZRP52192833.
Blind Massage (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828d9f0a98bb0abfb846287a6ad16ca67307fa7bc39e2bcb334722cec7f36c07. 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/QZTAS2102830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268f12616726b9a528ba61f10ac2e36880d9f6647080c456599ae7c69d29028f. 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/QZTAS2102831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f8fc1395c797af6a2c913432d2d59e90e003e8a6ca88efb88f10b8ee3a8fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAS2102832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9e58f7056dd8603a4c163eab55afc2ff313159b7bb5a5ac39ddd730289ac95. 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/QZTAS2102833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572fd931a701bf01700766654f777b8ca7e6dec2e95b77feb4c1aa2833ff8792. 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/QZTAS2102834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34160a04091be3321553c0676664e2eb4ffce84c10fdce91001ab303914d3549. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZTAS2102835.