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 0x24c8310fdcb4a42381fe6dd382e7b61bdbe1e29a3f6885c4b7690e32cd1399ac. 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/49511b2b-192f-4157-83a1-b5ccef0a51d2.json and https://artists.proofprofile.net/proofs/artist/49511b2b-192f-4157-83a1-b5ccef0a51d2.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 0x48e02c093cc470649b3158b0ed06a293ec38c7b48f7cc6568e455543b98272fd. 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/QM6MZ2253162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b92251c5ce41b5d3d7f1e05f3162291abef107a81084410ffd4342f590ab9d9. 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/GBAHT2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfdcc4de000c0b92ec4cdeca50969ee069a7050b0eb79dfa632b9948b4ee8a. 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/GBAHT2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bacf68637f6f091c48b90d4cc0e1afe7e0860c479dd5583ee44307ffef88da3. 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/GBAHT2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81f20c707b4fa0f3543e9563cade56810f465e04265d1453aee32c644e7f368. 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/GBAHT2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801c56791b2d018aab886aef4ac5219dcf50c68944044b5d7d0fe244cf55a6e7. 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/GBAHT2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa715d67033e6d86e59ce8d7f2fea10d5a9d5c43b063cdbcc9b322f65d419b23f. 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/GBAHT2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fc6507e73395aa2702738cd52aa2a17bdabe8bb4fc38d3b70761b95a2d89e9. 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/GBAHT2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c14be5931cc400749a70298b64535ec0c2d2aa4bff5364ff143c8b6c6873a4e. 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/GBAHT2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dba5050ff8da920334e116ecbd8621515612e6c50c15d81f94b7a40d784342. 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/GBAHT2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074c78c37dfad91152312985a2f18b9515fdd587e922ede5ca803949bff828dd. 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/TCAFW2111500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb463ce9e5d82eab33224697551717da4c9aa70336b16e726730bb8c171f14ca. 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/TCAFW2111515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392afa7bd1b5dc146efabe2d871a245c80fcb2097501e7c6f9ed9ffd496d7e0f. 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/TCAFW2111541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432d4a26ded4bbbfee7a3ad684551c6a6a4769468c1d4d570f0f35b7540ee543. 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/TCAFW2111596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc52fb20fbc6e7d6c3839cce281abad73a4ee2a52f6ffdb9db8e4a4c495df41. 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/TCAFW2111671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aab6a99383b3c6d6ee237172ea9b3914785af2ee377cadb97013b18d5ee87da. 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/TCAFW2111690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf917740dad8c8af892f250cd3a66999796e8f0248db0fbc59d8adc6b3c9ae494. 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/TCAFW2111825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb7749d6f838a036a48f830c3b30bc94923edab430d79dc1637efa8eaec8a1. 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/UKXN22378752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0241756b546b7caee1d22850a8f48be1a3d16cfe85eb1dd59d44782dbee3f489. 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/UKXN22300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5548bc0105464f0f220e5016a8cbcfc0f61232a15beb7a4e5a1cc7302efc142b. 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/TCAHE2339277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81f20c707b4fa0f3543e9563cade56810f465e04265d1453aee32c644e7f368. 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/GBAHT2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff4ceeff7ffe1d26027a57b6f59e76ddf21ce83001bbe53488e721d6dd8ad70. 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/USZXT2250620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06818aea1f54946f87913688d000303e92d0c4fff0233c050c63a349311997f0. 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/USZXT2250621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1308586f85736e91e4eccd26297c425397a42a8e0dd95aa3c38c8f7e2c16ef15. 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/GBAHT2202816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9772ea012d24f950ec4b418174602fe07f2fdc01f7ca3107aaba8d4c1ff252. 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/GBAHT2202718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7735c966feaa5b80bb66e260e5e97bde4bad32047743bc430fd3e93ecea48a5. 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/GBAHT2202711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eee0b168e86367510820d600b8bbddda8ddf4677438ba440d3322e0dfb56e6. 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/GBAHT2202710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba30dd93cfe29e8929ec5ccf95a79ca599b80e75a8bd608ada33ef982f7739d. 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/GBAHT2201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f8f7efb905aca065e1165550d2ba784d1e41e33649efb9e45fe1554ec57f9. 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/TCAGC2272608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461b67eb04bcd5a702959b4d5bac6317ae340d8a5ba7628bcb7e23f48f8f20ba. 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/GX53U2071599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c23456d9b6528d2bce47899e43e854ace1e3e5c24df270679b4a3295703549e. 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/TCAFS2153627.
One Mic Freestyle Pt.1 (feat. GRM Daily)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb6c92c82e6d769fbb3e10f09212a848d8d29b83b9401bfd625e21c550a08d. 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/GBAYE2100417.
One Mic Freestyle Pt.2 (feat. GRM Daily)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b264424dd10ba3d8e91e14fd16497883147a7b1528a6142443a26a6397d519b. 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/GBAYE2100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa755e87b91caf45023929cb7af07120a91a38ea132953a5bc3161c42e0c0e521. 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/TCAFK2115583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d78ac297d52c3536479b49ebcf17b86f3f700d31aa697c9afb8f891adb4fe. 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/TCAFI2006958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954a6a4a988d03950049c7377c8543b070127960b4daee823a0905babf0a2005. 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/TCAFF2037774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c271d8a3242f2cf37dcb5e45441e8ef9fc254ba315488a95cf04a3473719ddb. 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/TCAFD2019171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111b5575141a4c7b6550e59500d1bfc90c0601fa9b99227ee04d47c682a4a2f8. 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/QZW9L2337627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e02c093cc470649b3158b0ed06a293ec38c7b48f7cc6568e455543b98272fd. 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/QM6MZ2253162.