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 0xbb5fd6f9e4cb9fb88419a93656ee00058994f2b27649b60b6fbcf32b79a55793. 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/e66afa29-bf7e-4f43-a756-b4a43321b514.json and https://artists.proofprofile.net/proofs/artist/e66afa29-bf7e-4f43-a756-b4a43321b514.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 0xf8078abcdfb476c6937c03f28e42e25322f6221bbe3413a3875d59502d0379ff. 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/QZHNA1958108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f7122da5093ce6c3bf0e99f545310b3838f17b7b74bc5f054fe3567222fb1. 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/QZHNB1957487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4224ace7e8a9ad662842c2841e0264dc3be5644dad4c73deb5d8e6514d454ad. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QZHNC1999001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846872652ba6f33918215cc01a26a9fe973de220f33424b5ac18a42c494902f0. 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/QZHNC1931704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270eb62f00d9d35ed7d3d5ae857c10ca8ea18812bcdddde823231ba7e538646f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZFZ32078746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c276aa3c1f411d360cafb1fa5a3fdb1375dfb38c4a78d11a3c2fb0f435530e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZFZ52052778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b21e9298cfcd1e7b57011356360498a365c314b6a7566ed89740742231bfa0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZHN92036658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3bee6d0765e7eb8edd387caf88a3cd2d7d39366f59b8b678b9d9064fe94969. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GBLV62036401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6494e70b54f4d6df9b4677c3223b442d5cea268de7fc479d975b89a94a1a2264. 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/GBLV62036404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a79294c9ac3a72c2d225382cfd82c324ae97a6e5ba26a5e73212511711e7be. 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/NL4YD2100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed89629c362764ed7fdb88b421df1156fa9baf8196c8a5afacd81df262dadee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLV62122966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b75c856fd6d680897f87d8eb24a1dc0885c1e29d335c872f076b7d055a064a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62122967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429bd723f4e391fb37f093954cc0dba1f30edacbc982c109693526c9632121f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62122968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9013278e5b22fa334c0f8858e297b016abaf6b0d5bf3bb7442fd9c573f9d9ac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62122969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc658fe9d7ef5ebbd7c26b1b3efa600cc81dae63d9cd42362514fe722a83ddb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLV62122970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d003e0093e67826621bfd9a13b6c16d16dc9cf9ac004f34a0fc86755fa31934. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62122971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83a4d4b33409d25bce710550af25202f948abc8f431f1dfcc432e600515d0f0. 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/GBLV62122972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3861d6bf3bc3dd540701180079c5bcc12ceac35a25a64d3e7245bac0b6a519cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62122973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a015f14e9f4e0201a106bd957e46597080f9e455621cf09ccb11b8c8153a310. 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/GBLV62122974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4163a029a63f2b1a12cdc4d82f6dc1b12049e459354ae06e9647a0a629c8ac43. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62122975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc28a06a5d91d741baca4cf79c083f9a779f15e1cb9b3f8755e7c4a2adadd199. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBLV62122976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11775e2c84a527a9a5582d40725b6e2c1140e10bf2c9f5e82d3141828d726b9a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLV62122977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe175fcafd855df617db3b42714bfdbc47a823f51de66231b294734edd78aa988. 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/QMANG2228926.
Lofi Girl – chill beats for LEGO building
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eef6f25f3b06154ba3fdd3f08d3d36e58fdb8b69ee3e1faee80334e74f1d62e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2306957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e115866b68dc77a79d02ee9096fc79552f4c2c141ae8c004b5c4db5a9ee6e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKZGC2402731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb609651ec062a4ab5844c876f5d161e708f388e7691e8abbb1e73c5b8585029. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2222428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1622e989d62db4cc7ea72ada47ce22c46d682c4b67de00693c4afa0966db90ac. 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/UKZGC2307378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63d71ab2321746bdffa338dc997deeb22eb7051935bc0654ad34168b5a2db28. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL1LE2001475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b2e702ec588fe8c55ea5d1ff9930508616954e4922cb11db944450b2aa581d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2103268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98eb47586621478fa5e43e13b342d6309cc1ed4c3a9ae1af847d32532991ce. 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/TCAEW2004781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383323f0b0af88cdf3ea0e5ffde7d72ab3269cc7f975b2374107bee6f8a3e212. 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/UKZGC2202105.
Lofi Girl x Chess.com - Chill beats to play chess to
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb0833955507d2c24fdc72b895dea5b4f691e95d642d999034788f16a89b56d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2309075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e3c5d9e6f51813e64617965e2ee21a6db166682f296173cea7feb7f4d33efd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2268251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b569dc04d1bd16bfa74ea656e5b6381eddcace8aa2b0cbc832c8b0aa32892. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2268254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fef1202f3dbe242d3c3c05125ab1c530b76a6e63ee20dbd369ff6880da8628. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEZ2059203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbccfb7454f13639c5fea64f1daa41539eb0faa79f9a2e39c77a4b3f487d4ed6. 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/GBKQU2189465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd911fff04164637783917b18eeb668c25e092626cb4fdae2ff3ee3e5159d73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2407940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dd0fbdfa0ca7d8ae9756a786b69a52542afc4f490ea00c3945f7a66ae6ec93. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2402405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f527847e0323ed5d700feb73e8f6d3d5365b5f183e96a42b1c781b9c7d247b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2303307.