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 0xcb5197cec0e4d5f36a356b78c355718bfe49fe893b4889fc98c8d01f3f03cbe8. 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/99b9a424-6e19-4da5-9ebd-34fa08d94860.json and https://artists.proofprofile.net/proofs/artist/99b9a424-6e19-4da5-9ebd-34fa08d94860.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 0xcb03058a0d7f19bfcb93dca520198349d6b14aa6ac087a0523e85786057bd4eb. 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/INS182400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1a14b2f9a2d027643501001344f76eb1d18360714f904cb7b2c2b27168c4db. 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/QZNWZ2453548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3befdc29b6b89604d48f9b56b979c99d743b5715ac413c5f13c0e3d869b69af5. 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/INS182302964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82748dbd539d1e35fb57924c50c324c8caa5e27e9dc7f2a4a3b83ff4a2212f38. 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/QZTB72387413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab86eb855c70aaf5bd2bcbff460c3b851b5adbee2a89360a53710078be08adc. 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/INS182302483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eff61716d5e38727c228489252d17dc64a4fe92bbd153e958e973ab5b82beb. 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/INS182302144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0368e484812965918c86c9e45d0b1ed636f9db781d96d06999e254c1513742c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZK6H2370614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f6aa2daaf1655f7f1a71e65aa3d9ac92b51740f5868e0c72e90fab99ebce0f. 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/QZDA72392247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bb92ff05721edcfddee724ce4718c1a512c9d4469f35a799b649a2c5bb88c6. 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/QZFZ72301832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b82137775b70f47f577135a7e06ae768fc41ddb7557bf0ffd14f93392977752. 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/QZTAY2233281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03a7bef8375c25ec0f5c42822d9bccc79aad30dd46d6f4f155d1bbe114f9b0f. 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/INS182403688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e55e1dfd99f8ea1eaba7e15208306e0fc847e9f7fd959e6b25fadb054ce5e5. 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/QZZ792422662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b26bd417efd860e8c5fa29ccdb9ee4fd22dd18459144af9402a9cd2b187748b. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/INT102201664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc298812801ba380c83a77405ca5a67cc09e89c13c4bc4dfe7bfc7b99e776a3. 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/INT102201665.
Sri Guru Hargobind Dev Ji (Chatthe Avtaar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fd640ce505ce3254c545b300a924bad72b637e622021b608bd52f2e1c58d8b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INT102201668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4b15c7d114172a85c28fa88a09a7c96300bb2b75af0bb6b13c47a7a4acf0f3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/INT102201669.
Sri Guru Harkrishan Dev Ji (Anthave Avtaar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3692299d968b5d62b4c28ec58a3893b03097eff5a8c24b12551addfca5f9d2. 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/INT102201670.
Sri Guru Teg Bahadur Dev Ji (Nauve Avtaar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b72c3a687c3da77f8e31f8d57fd18ee7932787ca4fa323fd8fdae29cb7711f8. 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/INT102201671.
Sri Guru Granth Sahib Ji (Dus Avtaar Ki Jyot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe62bfe493f3634c875cd70ab4577de814eaa56e1e8a4c775817061f4a51b8. 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/INT102201673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71781f4ed2723299c94a7f7ccc1edd3979aac9fd92d49ee244133f4acd469ef. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA2P2414135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900411a6d3d94edb203ed688ed140ca127cd734286aee9d760f1504d9f40cace. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/INS182302521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef7e212a62d7d99754041de4d7f83ddaaaca0f58ca1c64e5521394f0bd39b00. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/INS182101556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b229b3dac2396c4c4736b3da25eb02aeae728573a928af8c22599b414a9304e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INH412202789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee80c6c1ea89d689a7bf9a94fb8aed9466727821c86670118478f8729a8ab8a5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/INS182101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6732a76d6085c55c32649637235d893034aa1f079240d1f13615689fe9e5108e. 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/INZ031407372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd94a8e7c0cf5192da2c6cf080ac5baec287e8472c91d485a7e8d33273bb0374. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/INZ031407326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de093588c6678c412e1ad1f66a52f3eff09b452f6ed43ca19fc37ae4c08b517. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/INS181601758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310b2630b611aa1740d94dd3d6fa5c691ae2faa803b07a5ed47fe9b89309f4c9. 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/INS931609955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a0a014d45e50a6bb61f4b52edf89ea30e0664b99f8525b1831b745a669946b. 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/INS181500819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824cab6d16b2d4a3afc90374dd29c4e33d61280753cee157a67bf879678fe30. 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/QZK6H2354362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7083f41db76ed60b94967fa5ebc51a6e94b2bd4991345ff9be2622e51867e9. 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/INH101707227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050397a3efaeae26857d361ed92940cf69773aad49e85865982f55bcd3d8ef71. 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/QZTBB2254118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4a9498ccf1573e6698cc05835704e19379543213e8df799d2fd5344ca699be. 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/QZWFL2372603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afc408652de515265c3d4d810732d96625782523b099aaacb792215e1570b8c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTAU2438456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c264be740ba8fca383b12c83c1e6aa4d2aad986a839c3a6dc7e490aa770008. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZNWZ2437149.