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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b9c6a85839c16a01b622cb7b31152330741620fd48953e7541e62c6288dcc4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65477025-8083-4756-9ffd-3453d065ba72.json and https://artists.proofprofile.net/proofs/artist/65477025-8083-4756-9ffd-3453d065ba72.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2862dfc557dbd14845d6b070a8f00794a55c00e46d58a33bfa2a31bf2bb52271. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:40Z), 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/DGA062265669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf6286fc1156b5d7853a172912ff653fcbfb211653a72edbb796d1d89d0197a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DGA062265661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047b30ee7f11ce9361220dea5b21c57c7d22e887fa20c11e4d763c8511fb9641. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DGA062265667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49abea71ec26e02d393f8844ea54117f84ebecc1219db1959f1c1e32de9d33. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR10S2377491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbadb0475ceee1bb5d4134c0cb950005ae533156901fae96143f0c9f7a84bc9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR10S2377492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68bef1932e7b01c03cabe5b74f79d22872952dc7237085f3cc373e8948f0aa1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR10S2377494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aaa432cc4feaab31fea3f1899bd13fdc4cd59e57a5a235261325a0d10bf5bb. 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/IDAC52000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e76f13ebcdb10566d463b6cae48f86ffb4b51d7929c2bb0bc0564c28bd30a1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/IDAC52000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b395940bb0538ffefc3f66e3a7affb37bfeb79e60412cbfdeb0f8157bdc476. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/IDAC52000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828cbde55772088eb3104e9d3674c55822275d652238df401617c46b13d529a9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXBAV2456638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2041f40aaab70ec49ba1f3245da9724aa6339f76d3fd3ee47b7b4e0e162b1bd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SGB502460826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1598b4fec181af4d37a4935ff31ebd48e5b188fd187d9445fbbae6c303f81354. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SGW502270753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2452c7344789c76931e0f9827ba32dbfe4a3135138685fee145290dc94a3aa21. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SGW502203701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef129551b3d42782c6803e2dfb293373da092ba88b50e513c0e94b7020f5d32. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SGW502213296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f16d3916a479723561aa8669dad87d752f16de1f409658dbff97003a1b3a9b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:37:39Z), 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/SGW502296408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22dbc895ae1cd833e19492eb512aba6d1884f73e9b9cee4b426487e42d21971. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SGW502225590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1598b4fec181af4d37a4935ff31ebd48e5b188fd187d9445fbbae6c303f81354. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:21Z), 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/SGW502270753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f16d3916a479723561aa8669dad87d752f16de1f409658dbff97003a1b3a9b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:05Z), 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/SGW502296408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97f28ac38b0458cc34b371cd400ceb56ec6bd2328d6d3d2e4540e7117fc96c1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SGW502246320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22dbc895ae1cd833e19492eb512aba6d1884f73e9b9cee4b426487e42d21971. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/SGW502225590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc6507f6eef2e732cd45b54db3a3e13e0859426d09965e8e0c66bea83ce7cf9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:31Z), 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/SGW502268590.