Hobbits are a fictional race of people in the novels of J. R. R. Tolkien. About half average human height, Tolkien presented hobbits as a variety of humanity, or close relatives thereof. Occasionally
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 0x88d596f660a4579435c8e33377721108de047fb76c1a74f6f022719c93a4df55. 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/ebb59f7d-6c74-426f-b477-828c00a7beca.json and https://artists.proofprofile.net/proofs/artist/ebb59f7d-6c74-426f-b477-828c00a7beca.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 0xb09b39c7b70d39dca093fb271e027ab7f77329b0bc7341a1f1252ec500680705. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/CH6541724778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c951ef31b9c96a359499d9367108c8cb457805edc3d2afc537931b1dda25d63. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH6541724781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f662422e7e254d5ec99d7b4c4c4727e3a40b202bee97a9fa872b04660045014. 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/CH6541724739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c7bc538d52578c0532dd18e9489ac0a4abe2bc6f15483053ca11387792f9d. 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/CH6541724740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a3c065475b52ede9ba22c2583f6f7fa4c77895dd8f23c83787aca8ad83430. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/CH6541724742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac335ae827e59d4515a230527a5d381e7d9c7977fbefa43928a706471184b1fb. 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/CH6541724686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8692e8f87c3e05aec3245a4ef6cf148a163b74f9753161625d18a885a49154de. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CH6541724687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8242dbb234a84d4d9dc8e5f05a3e8419b634519bae6b2df85f5e469f4e268279. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/CH6541724690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb6c3639ad70f013940cd8710f3f24312095d91757284a46c365ef4c5b821dc. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CH6541724691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bff10d374db017428539cf6f09a5fc918efb1f58a1953293c59b8b2853d621c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/CH6541724372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7e7e329777e61bb5efc4880520834da4654dd3e639a7bcaeb0021592349791. 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/CH6541724373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d87c5b159010bed24e1e4d7dfac4ff54f124a22b2be8b633beb673a30b797b1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CH6541724374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5cecd715d46c4afe0d1d8de3f449faa06337a4f365a9407122bd2aed35672f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CH6541724375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d03d65b8656d1cd40c04d053dc96e34e08f95825bcdd2fba8e179c9200dec74. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH6541724378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c70b4dd87a1acad59430929ef23b445a481943468e56942f10520658016763. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/CH6541879181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659c2ce0937935712f7cda9567be4523e1c7df59287b09c90fa076fff16851c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/CH6541879182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c94e3414c73d314bbeab3ce6fae894780ae216912e79c3dc703824a5e23e47d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/CH6541879184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4daca863bdd91c2e9db7fc32097958d34c35630ec7e3adf1c43aad7520fe5f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CH6541879186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268dbaedfbb743372a72b6a9d498021b354aa489fdc2a13691d871e271875775. 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/CH6541879189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dbf0b90b728e545ea86163beec7cbe6f3d9f000bfda6ca895f068fb35fff64. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH6541780579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d7afc230941d50ec11069d7a640f7dcd3d5b8bcc5a1e1689e58eae3e2e44a2. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/CH6542487571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a823458e05910aa709cc380f39ab4641fd4e0787f472ea7377d281293a7e74. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CH6542487572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39fc4aba9102281fe5ccd9e5e67830345163ee02fb156e81c3aaae56ee6bc5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH6542487573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe32848e23892ee4171a2cf2139050da8abb708892e52fe6a2ca2f83c04b9c3c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/CH6542487575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cf98c3c75fd02755ac601cef98a5b1cba4596f9779e29c9f55174d8fad39ee. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/CH6542487576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c02f5b423a3cc09f2a87189521eb277500d96a2d171ef29065a71157baf69b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/CH6542487579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11a19e1c993a992d13a8d0339948033ad44ac2417084e6671ed7d1d6acf70d4. 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/CH6542487580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b17059b33e19048a7030b0bf6f9fd068e12019776a9ec3ffce9c66cc4079665. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/CH6542487582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586fcb43a6ece32eb16c961363abf2618b913b7acf26ac364c1096c293a2837d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6542487583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c38e9e4a3a6911c9564967ef9d586755b2dcffebe3596884641adeafc34725. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CH6542487585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88e85d731f99e650bf717ce6d40fb704564462ec88b8429e74df3e2da485763. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CH6542487587.