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 0x17211f9832be78dff819f375251d8ebfc86675dd8978fc03b82bf2c5076dd070. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50fa5d02-5dda-4899-8d85-45f1e3b10ff3.json and https://artists.proofprofile.net/proofs/artist/50fa5d02-5dda-4899-8d85-45f1e3b10ff3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0712f53003540ab63d81fa72e838de73c433cff93e7b4e45f357047601fd8b. 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/NOCJB1701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67e1327c1f6c79165a379c23d169585c0bf3454b013cf9f7ad9cac6aadbee28. 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/NOCJB1401120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b2e33550072b39f765a20c2c3e8d26f2760cef7cc98d3dfd87c61b73559e8. 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/NOCJB2301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e68c3fd4fd9f70d204052cbfe35049fbab8499bedb17bdf3f8af9319e773651. 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/NOCJB2301017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b482c22a83a69038183079703158ad7de4bca10482fd64382ad3fd0a3576ddf. 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/NOCJB1901203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a0fa876b570cae678df6ac00acadbe51b56cb2d35566e1b8ecb91e000e5d1. 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/NOCJB1901206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf3b0254b5b411e833523625c2c5eccd7aae6a33079ff4f6d8c72a3c758c47c. 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/NOCJB1901219.
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
Symphoni No. 4 - Bookmarks from Japan: I, II, IV, V, VI - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d834dafd4e895e73a83e094bfe7619b2cdb07228885b9ef24fbe86d6c69feaa. 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/NOCJB2400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3952457f393abeec98572fa5195a2943925a21d5118dffce41ff3795beb91274. 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/USWD10322467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a3e9a9d8f9cf1128941b2e2195ddb0b5939a064b11cbc643a93da1bd505cb6. 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/USWD10524265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c252d1cde1b0b279c73e4f10be0ec60afac2b364cbc516f97f0659b7c8213c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD10524266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625ea9471a963cdf4a093071409a5aa67d98ecee9472be4ded3c607c99c099b1. 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/USWD10322466.
Vis Veien Ut (Tema Fra Min Bror Bjørnen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b273e7cb9a9913f6e271f6e92e0c940dd00ec2e0bbc7585c882ceedf0af888. 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/USWD10524267.
Transformation (Phil Version) - From "Brother Bear"/Soundtrack Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba7df7f5d47f2df71fefc40d7e57ec5b1e7877f745231be5358a6b6af167a60. 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/USWD10322465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b9822296781e973291b60adc41e219f1a91c848a5be0158d3ab6125badc54. 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/USWD10524268.