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 0x7e2cb50de2b299422ac2e81d9738d22b1fb2f15d94112a218d0b6cc2517bdb0d. 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/52a276c2-545f-474f-9356-5025f7aff528.json and https://artists.proofprofile.net/proofs/artist/52a276c2-545f-474f-9356-5025f7aff528.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 0x694cd31fb929411c7e8822f59b680949fc9dc449d2860188310e1f9778ae043e. 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/INS180150570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe1bd18c5454defe05a99bfb75e7f65529588a0816feebb2407e348b562c150. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INS180602569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4c6d636480d0fe61b24f7419c58c0a517d791045f34d8a7686083b78bc2427. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/INS180602572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3253a7afa9a43d34da132ab1dfdfe099d08c43aa32d9615c73f268c3d96ba388. 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/INS180602573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae19020d61e6c83538edd905c31bc8e717fe2afe9def14714a024e98b01526e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/INS180602574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d183c5df4a8f5e2c4f9bc9658b22c19e037438291fc75b9f320e7f9716e50e. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/INT131715801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be87b21c254b35bceba84ccbc46d373f36799a46b7fe5ff99b7625f5a82dd1. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/INT131715802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7882cfabec8c962ba6ff1e42117a313e40515d2180d5fbe59289037387b70ccf. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/INT131715805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4ab4b94ae49ba8a3731dc428ba2c7e38fcadb0f098d7765b3d6ea56e4d324d. 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/INT131715806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62f27d231b558ca7b3589a4891ae755ae0e1d9dde57e19d782356f2049b75cf. 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/INT131716524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b81a791184596eca8b704f15627dfb616aaca7ac8b6e78ff047b6e1f6c117eb. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/INT131716528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735bfb955ad7d74bc3472cd2974f78889dedbf8e26fb7fbd7d0c9ea03c922fb9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/INT131716529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3ffcad07060a3cd9c831b1f1e5c4c561ace10ef5936078c6806c6cc35a05c5. 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/INT132000696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef5864a84744afa4f7065a5c1aa7e9afab66739c646efd49fba8553065a598. 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/INT132001194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a96549c4000821d33898e848a9ea002fe1e1822be84567546108c9ea01f2bd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INT132001200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e1e11b7b227dbdc93cf1b3e7209030da05d0d61c9fdaf1126ba476c28938bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGN2237165.
Shravana Somavaara Maduviyaagi Honti Doora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0288ed03b10fba58201c2b7a4f57c62a477b2ef9e286920053038fa7facca3c0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/INP1N2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25927e1347c11bcece94839ad5c9a744f9e415765e5171348dcb0438aeedd4e0. 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/INP1N2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ef9d16a01295f2050eac002afd92366902f09b10a407e319545f0245fe7732. 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/INA442400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ef9d16a01295f2050eac002afd92366902f09b10a407e319545f0245fe7732. 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/INA442400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dced9e9c3183b8aff5403f5252d3ff2650f10c41ba499b0fef06ee5be9c8fe1. 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/INA442100784.