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 0x04c2808a8cf8d4e32f410917f5a80ce14e6537b12bc4a830c294c948b150b94c. 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/9e4e1025-6a54-4929-b554-c9c2ca7d6778.json and https://artists.proofprofile.net/proofs/artist/9e4e1025-6a54-4929-b554-c9c2ca7d6778.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 0x36999734191c6c6f993ba0165f4b58f14c9e925a8322d0b9fac35971ca5c4c3b. 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/DEH742204393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7aeac2c405cfeadb04c27e135196f8a4b6ade98da2038fe18bdbf02da6afe. 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/DEXO42384682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c47088d7c38332670a2ebb4c2307d240faf9dbfa3a62636f1006eff7767062. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLV62307604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0258b88ac99016d51a2bc324f548846f19982d6894bf91d78bdde59e195d2b. 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/DEH742327434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987497afb1383b06209192713f9c2bff61d98c94fac1f55db8e8feaa207e62d5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKQU2369035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e7f396198764e5b244e93d654c1bd234501035ef05ea63c1e573a71a8a7ee. 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/DEDH72200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1970ff9a4699721b1fcb440cbe5a7faef453d149b9d749dc51595ca9e328d. 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/DEDH72200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b958469087b7784931f07d1945a9372ea5825b16563c5582b1864db7860891f. 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/DEDH72200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d92b800b7dac43a68793dc5319efec088d072f670f5695320857878dda80310. 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/DEDH72200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f0e1cc7fd1687de72ac602b7056688000279c8f9061677d317fe20ad0836f3. 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/DEH742200533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa1d057c6afab573fabb25d713bf0ed02e9236193ecee3b0b2057e56241f3e. 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/DECH62000569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2fee358e8a51a60c50b7a3b7b01755df7a334bd12cb5f92e94c9d2b4033091. 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/UKR6V2071761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a7b4e8e528bd359661b22ac37fe024a5717353925fd6cdd0cfc44fa4670079. 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/UKR6V2071762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8316cac90254275d0ae2d2804712ff9981437a424d6ffbcb23a51c41bb9a8fbe. 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/DEEE71400324.
Global Underground: Afterhours 9 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6b92cf24e4703018cbdb3f7f8e3d83170e07610b1a4655a71ba460e85d1fdc. 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/GBHFW2200003.
Other Side (feat. Robert Owens) - [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3437471157a61bd73e4bfcfd622f3dbb07ee6dee4abf8116d555abb88126f979. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBHFW2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8203ff31b17c748fee4fcc8fcc7f7e4fafcc7dc33f6e42b1b27396fceddfb7b4. 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/GBHFW2200005.
Hollow Talk - (Lulu Rouge's Stella Polaris Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74faa38fcb92493f69840eaafd247ed71a06bba41bb7a77b4997632525abf09b. 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/GBHFW2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa793135d625e022e2233f807ff7cc468f6d7cd0ea1ce7ab70e94db410b7fae. 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/GBHFW2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7415ff98ccaafb4e7d906c04e9b80b3cf42574407b3fabe5871e1a5e6144b00. 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/GBHFW2200010.
What If The Dead Dream (feat. Ela Minus) - [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10179986d9c73fecf361aa194036c5e88a11255d65402b83bb1a9fc52b50b3af. 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/GBHFW2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9e1d17f678b10e99cac31848e1883428ae69b9093cde3b4bdc3a7173c72e4d. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:05Z), 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/GBHFW2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c7263115bc07b870f13a4e8499f19be8d76a25598ac02f14e2af71b216f01. 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/GBHFW2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130d1fa92c03fcbc5067ccaf5f871f7a3530b37d86e43e7ee8e63cc75b4ede19. 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/GBHFW2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119fcb8604c422352533a52c074c366375d473a0e5991c3a3b79e98c4649d8b9. 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/CA5KR2226913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f792c965d1cc20d7413f8f59fd524fef6db5ac352219c6d7c439e26fc145a85. 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/CA5KR2226914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18887309dfd579cf60af69e3ce117677a794c2e8d8e1179028ce2f0492684a9c. 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/CA5KR2226915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5995f47ce3448f6c2bb82e4209848230718e11c328463182ec5133c5ae72c. 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/DEH742318928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b4d87288efdc14396c53b35562c66911616ea24dfdd43ef68c05602c8ce438. 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/US83Z1921496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a0c643cf3c4e7ff384e2d97a0b2356d8a41fd43a5e1b056b9ad993a38553c3. 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/US83Z1921507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d20e224f4b6f87f09dded0b6572e122983b913190de9fc1da39243710598f5d. 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/DEXO32485664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b450caa4f1fa57493ff94bbde4225a8388118895fc3eecf942f8a8e71af229d. 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/DEXO32485665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c53bc7262e3853a82db750525e9e9e6900cce8c79aa0ec0172803914c76ff. 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/GXBNP2402619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6a23da33b4c43f05c12b632f54d8fa5c96915acb9305db0c575756a69be50c. 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/GBLV62403253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbe219d89277f0cb410a97187408df8e7f39b4d6e0120f264e5d0b3cc9a10b6. 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/DEH742441565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576eb71e32e49b913e1014e3123b1fc3ac2f4e3a94ede42bca7865eb29dd4778. 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/DEH742441567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9fdbb244bf0eb9a63c1407842ca4a06e9b269feaf0172a5f8aaba489491b5f. 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/DEH742441574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01549aab1d439aea925cac50fcab28361cff5509ef22559a41826cc346b8e7c3. 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/DEEE72101476.