Northeast Thailand or Isan (Isan/, ; ; also written as Isaan, Isarn, Issarn, Issan, Esan, or Esarn; from Pāli isāna or Sanskrit ईशान्य īśānya "northeast") consists of 20 provinces in northeastern Th
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 0x5fe4edb1c81969d302681184949ebee81ffff0c6a9f527af52f773e0a5ddfa79. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be8fe8b0-bb80-4e92-8867-552c561bdbe5.json and https://artists.proofprofile.net/proofs/artist/be8fe8b0-bb80-4e92-8867-552c561bdbe5.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 0xe3b1c4a81bc2c141bb4a99e64a87a8d8bd128da8e5b56bc5fd846f84d4a18b4c. 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/DEX261312203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98cc88229b01dd51bfa1f431a284862f38c0f070a9a1ce807f30671d88389d3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USA4D0009801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e242c3127dc53894cea6fc28c3dc95a109f08f0389b6de2dcc7f0ca61fedf8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEX260102203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afcbe5c80e4f32f6f52041c2e7cb3f99f720642df159905d58570b451fd0486. 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/DEX260102204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2527879d4e0ba76f75a2b433e551b3022494435b7e1c442ef152b78a9fc7348d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEX260202802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d651613c5b445ef60db6b9f690edb61bb105cd98623bdf2d482feda56f5779a. 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/DEX260202803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d761d8f8da00ce82c951a8421b42325f7fa6e783eb1a7ce7137c9aad8462c6. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEX260202810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c71b4cf5e7dd427f9690fc714834dafa802b59f023b14b1335fac9db2e221e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEX260500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7905a40c97f285eb17995beb2488622705eb7f14abdd8808d105e00115245429. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:21:55Z), 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/DEX260500703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f3f4cff2b270fa61026cfa308f211b8dca5e5851624d1f1659a91f26ab382b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEX260606802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd933d5cd42f3ba2f96d914a28b94900c8939319fb9f918484a18957b0f6eb37b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEX260606807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672fa192407f4f830136afd8f1b77738cf1fddcec79aa0d69171dd5c9c5f760f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:03:04Z), 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/DEX260606811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9836671b588a2102761bb5a1aeaf78bbc0849e87031d7653e1e9eaf37f82697f. 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/DEX261916903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701112e6d1212f68ffce3539a69ea266eaf648508bc8987a0d1ef95d029b2f6d. 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/DEX260102004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2b010da73a06cc087f74b8740e7140380cc54f1601a530771779f6ab675b46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEX260500701.