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 0xe13419d7e78c378d84b54740f7bdaa210dbadd783e191bb950cd124e75e00081. 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/bb374b1e-eccf-42ce-8eb5-03f17da1fe3e.json and https://artists.proofprofile.net/proofs/artist/bb374b1e-eccf-42ce-8eb5-03f17da1fe3e.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 0x5cf6e02135dd2b3ec11541761dd6f7c8d7b3778342c41bb48b5170dfd56ab773. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/INS4J1910033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c51d97d669cbd3d747337a3109463f298bddee89ee2b41ffb120dd7c0f9368. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INS4J1910038.
Akhila Boga Kagojote (Mejangkori, Vol. 1)
Akhila Boga Kagojote - Mejangkori, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897f4ddf765a2f5d5ae590d62d27ead62fa217f397d9598e696c207752febc0e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202153036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae2d8cb551fe0219e66b380fee4f52945698066d1d60d526eb3ee9bf2cb974e. 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/FR10S2233737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5db461d1919be1405b12289a3fa8dc92c9b161e11b66a5e9e717c8a169a463. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IND832217409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef90ddbf803b8cee668763db79b6a720e95f0032f7b6e94bcf46a16c6a6537. 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/DGA052277656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a252cd1cb4107379e988bad56fb84517a021a2fd2904800a89971767bf00166. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA052282465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6be672ea9d9fc5724f7203904289f42bb66c2a6a7bd54f0e17020d50f21d41. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/INE302200536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c5f4a3fa6f6bef6583e39c8a0ebaf235f04deda103bedb70624b7cd3bce23f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IND832300043.
Endhare Mundhare (Mejangkori Vol VI 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd5c56c393e428748c75608553fe11bbf44f75d4e24400d6830c721b6ab1d6. 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/IND832300269.
High Pressure Low Pressure (Jangfai 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270af22e2bbe3e957ade876a12bf9fb4ac80473bdb518afd9ac881d2a5ad5948. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/IND832201448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5fea00f1ef7d36c3b1084709a51eacf88c8d67ce9bf0369bb849460bf3ae63. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/INN2C2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e121150b5b2230281fe4f8a46bd63cc9a4eb4e013e3a610d84783649d4f622. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZN882440943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0026d560e3c4453ffd7737c004fd6a1b69f3c89daeb6ed59039c7e677b9fdb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INN242501296.