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 0x678cda2aa41799714cd5fcfa13ab1e04800bceed1ca799d03f58411325938e0f. 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/1696910b-09e4-4140-a0ba-6ccb2c59c282.json and https://artists.proofprofile.net/proofs/artist/1696910b-09e4-4140-a0ba-6ccb2c59c282.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 0xe2539e10c98aee8d3bea7200fc6ae3da8930d1a70f22ad81766737ff8017c2d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBG61904496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2427df912acbfbdc674cdfd200abd2f568e8ef30bcb3b58cca2261460c2207b3. 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/DEBG61904498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb482285955e5fe5c1d7cd66f059669b2fa5bb82d57557ad4716ec2a110768b63. 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/DEBG61904502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4c079bda97b9af1418de2294440d928aff332bd5b12700ba5548171e18cc5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBG61904506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac25a78be0897f4d6bab25eef6c4c301f845c4a81564f927c727a7420a36aba. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEBG61904497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63473429dd9ee4581b4a059822aa8ac110e7a81510a66163621efb4b03431694. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/DEBG61904500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786f18e6b8080822ff08d58eec9faa6d3b50eb9ae5885a672ae6b540cfb2adb6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEBG61904507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f55ec0a3c7ee51961f2b7294d27bdf674d380f4d11d02ccbd81fbad1a7fe5d2. 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/DEBG61201452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7c909ee5db9f2ed3d1e159bd9bea106e8bdd2b7fd5749a784396f99fd1bdbe. 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/DEBG61201453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71088020bff1b0f57e9cc628c4266432b881a2469a50dd62881a1ea80616416c. 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/DEBG61201454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d52871630a6773c44b2114b7405dd4ba0cb8f05dd7a18ff241e59caaa3446c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBG61201455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82dfbe18e9767d10daf31bd7b98fa47a83798b450fb59b3c67168b14cdce49. 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/DEBG61201456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f85cc47fb21f177d2ee745485c70e3be081ef141b84ba1187f2bc7d25129b10. 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/DEBG61201457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bd82f17ab5ea25dfe3ed2eb742fb1d21fe5880262b98537d9caeb409d08bdf. 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/DEBG61201458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbff566132c084780c0bb98d7ba95d96f8dc1cfd8858687b5c3c9c0b3783a8c. 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/DEBG61201459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb930e30b3b4f2a3b711cf1a4d7dfd13ce53da68d4979236b42f31a75ecd9dd58. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/DEBG61201451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461662068743164e0dd49c8cd0ba9f604e3fab095bb146df017d52abed6f65f4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEBG61201460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb3ffc05bcac76db3e70bfd6960d8b3717f282fb729dc365423e202d1fc6fc. 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/DEBG61804270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64c16e96b132880253883310d755053a24c067894750d48276c77e4328c466f. 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/DEBG61804271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc729ed7411fb983f736553231d96732139bfdba12737184505d75811fe40227. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBG61804272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb0a3bb668fa0077de231e6bb9260a3275baf680cf12177674fc75543878a51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBG61603220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36660a87e016d0464a8e47170f41200f91a34581169ed1e4a3902853a311eede. 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/DEBG61603221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101edbe53e93463d573c99c21cabd27732efd3189df598ff1687ab4bb51cf990. 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/DEBG61603222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23476f3d9b05e79d02e9e53e24d8727daeae8fad12a0f3164c73c10684cdb9f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEBG61603223.