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 0x68ae2cceaad23745fa6918cc0c0a3b2c1fdc73ac09326a076fa25590d921875c. 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/708bb057-326e-4f10-989a-dee01ed1380b.json and https://artists.proofprofile.net/proofs/artist/708bb057-326e-4f10-989a-dee01ed1380b.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 0x5e18947b59c4a7d1dbc890f989c633c9aa194139c2f12fa3562e5829ab1e7813. 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/QZGLS2486447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfc01e000aa77e77f5e14968cc411c3e33ccb0f91bb3874e98fbe3fbac454fa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGLS2486451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb51ef3555a81ae63397f330eaa653c720f9b146ebfffdc83c1755ee4c2fbbfd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZGLS2486452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92332fbf1491ffcbef8aa7284287a0ed2e870010f989e42a78a026ed71268451. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZGLS2486458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64448b999440398814c5f73f0f1198b2c170f46fa1742fcc918fce4ac13eccae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZGLS2496098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18727457d982ae7390a47a2bc1e00ae0e197b759a5995d91c40882fe70e83edf. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZGLS2479232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea1ea3c2bf4c265ba3343ba27d5ebc0ea178c475e7dbda46031c4c871125485. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGLS2495918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed203573271b5b3f195aac846879d9d61cd02b13e4f4623ee0dd28b7cc886f89. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZGLS2495921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9947357a29f738cc6e1b3721e9380bd9be26ee751a2ba68a17c6e1dcafe3ae. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:38:42Z), 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/QZMZ92407303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9b19dbe5aa5dc6ebe1d219185095ef5889c1a0b957b936e43c49de0575e6d0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:28Z), 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/QZMZ92407308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b5c2afff26ce437e3ca70d98cc1cc3d480025c1caf5a8af6897817271d1912. 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/QZNJX2404572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b84fd213e9329e0a40f30cdc036858b4f00f3df80adb2e85a2b77b48d48f98. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJX2490663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a05378175164d667a0b31792c8fd24c5d396ea467a814c4a8df31e6b3e7cd95. 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/QZNJY2454827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa868e25f13142f6bca250c750539ef09be35fdd9fd542bae749cd041644bd38f. 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/QZW9K2490281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecd12f4b46e6958eb9c7ceabd421236bda8563e1831cbb2c2aaf0fb841c19f6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZW9K2495013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d4682ba6e9fdc24d902354704d5f1a575ab1e438d77bed9ff555ba7b010102. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZW9L2419898.
Cumbia Megamix (Un Poco de Ruido) [Remix]