KASO (1240 AM) is an American radio station broadcasting a classic hits format. Licensed to Minden, Louisiana, United States, the station serves the Shreveport–Bossier City metropolitan area. right|t
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 0x09f085c194ef34698c7279a680fd16a1b03329fad57d7cfe005570cd416db3c3. 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/74eff8ed-866e-42d7-80c6-3c5d25dee8b4.json and https://artists.proofprofile.net/proofs/artist/74eff8ed-866e-42d7-80c6-3c5d25dee8b4.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 0x7b8a1fef59e593f8b64cd1ccd29eb7d372966097b5b0fc63ea08c012e9f9dfce. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHNA1981330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc537fcbfa75e625c33f5ee4a36d6ac5b5056ab2090ee03b0b9f4a11036534f56. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZHNB1901969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc448a7d662f63b5b537f9421b3cad47478758c199cd18e1a0fb2fe4232919. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZFYW2054630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ca306b1aef8297a65afe7a793d2c2b88e78516eccad83feab120a710bf32e2. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZFYY2044961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e780243afd582cd308dbcbfff2acb8a720ce38f0e92fd35569b84562023451. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZFZ32087276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8093840d4f3788a9c7f7586ecb84a3cc7fec163c2f43ff22af3cdd538db80541. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZDA52047587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b72e6e0b49ac5b3cfafcdba1521b5f3e47265917df5ecf4e36dd7a97e4918da. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FR2X42048398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd12f0b00b2e404295812ecf7c7bb831977e657f7f31f1084a6985494463aa1. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/FRS182091837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7f8daf12952003f993f7178efc82800c759d1913570dc1c6a599629a3c6610. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR2X42246335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128ed911958203b1300b8f71fc006384e5a45d1d0785dc1d8deae68691dcf31e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR2X42246336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e134b55975d320d103298d9786bed1705941ccf30bef224f81bb781f68fc3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR2X42246339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416d144907e00fe30e85e7265f423b38e7702d5a3a1998cfaa9866953ad263f4. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR2X42246341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bce18e0787e5a802325d8e50e0fb821a467cc2f55061b211c5d720c9321422. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR2X42246342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acdfea2140dddba0baabbf3ea2b39319f947a65efea3f4d3f33185371958e1c. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/FR2X42246343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5259c50f7d19f82bc26989a07a0a6c4b53e4b9c63ddcee84b4781b6806f22f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X42246344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a8fe8be28bbc82685c6a387fa5354598da29b858e01cbc45f4fc1a6bf850ac. 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/QZHN52200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43a92a619a8c4a9fbdd08749a490e3d4397190610d3c9b4e63ddc5c53066f67. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR59R2344325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf953b9c5aef964de9300c42d5e25b9f45f20250242af52b626c8023318720abf. 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/FR2X42489685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60b51a4f4efa19acfc048d7f3f30db13479b9481779b0d356a47c4e0fa52f6f. 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/FRX762404186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c0ab218957e4195e512e27a6052e1535d447dbccb180e7b92c7d5d050267c9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRX762491903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09342d995f8c3a613d1a7cc28d09a7908291de23ebd87f9eff26490e6080d82. 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/FRX872443611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398bb46b3e2ad305988b3e8bdf45ceb8dc44adb0d794668769349e2473f3df8f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA052431183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398bb46b3e2ad305988b3e8bdf45ceb8dc44adb0d794668769349e2473f3df8f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DGA052431183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d858951372635fe3b508e78c3b48cdd9ea90a2369ebecfc272cbbef0d17304e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DGA062432118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7f3f720aa3c700ecc56dab04c3eefb23b49181f5eaa4f73e08cb42905d17b9. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/DGA072464023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60b51a4f4efa19acfc048d7f3f30db13479b9481779b0d356a47c4e0fa52f6f. 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/FRX762404186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7f3f720aa3c700ecc56dab04c3eefb23b49181f5eaa4f73e08cb42905d17b9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA072464023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5df3f6bfa433e4986f2048f4462617af8b0a3705726d67232619bf37d99c70. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DGA072491735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc355b7dc5f5121a5e3a9796cfaf243eed97c8c30af84398efb02a2d6d54f8d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FR2X42597677.