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 0xfb65e61093bdeba167e6d62f6a44d15092985622f7fc7e70df12ecc239e90518. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab4dd4d-138f-4f8f-af83-6e842dde390d.json and https://artists.proofprofile.net/proofs/artist/aab4dd4d-138f-4f8f-af83-6e842dde390d.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 0x794fd6aebe056577d5ad9058d28c034cc3058c40a5c3a26a34e28fcc811787ea. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/USUG12400882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdeb59557fe80a3a38428830eb8169bc405b1c116ce8722ed48eebe9322adf6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:22:51Z), 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/USUG12400883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe866ae5769d2774a10a973d6daa324754cd77ac8a5e87424f20cc18aa7e6f670. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USUG12400884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa601edcceef24b2fdbb0009c0c2cc73e221c7d46590af2ccd9e206987ed49dfc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:37:03Z), 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/USUG12400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa831e8f57bf095a0967b088c1f3ab0315319a7d4a341b8b7d58573a1502a9b45. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:24:14Z), 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/USUG12400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7553c69c6e8cbc2dc3f6b2e92187ba84c0b258bf2ef5cee4d842a748acb8e3f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USUG12403518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dacf4c9bc9d3e4e0ee98c8bfeef0703b132cefec28e19630410bc789981b17. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:53Z), 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/USUG12403519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea19fef4c2ef1829e57401d7f3c4cdc13b2dc34313ae0fc4e3af525d1a37cd7. 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/USUG12403520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d020afadc0d0d7b7465ca58675bbb79b582ba4fee3da2e72f391882e694f198. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USUG12403521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc9e6f2636b5d47235f4f070402664a33f76732ef678689b01c5342b3ff2a1b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USUG12403522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6203f7dbff511baed909d064c66092fa41cec1f5b551ed41b237f5337e3fef20. 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/USUG12403525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca0e5c09a4b06ce2e5f369eacbe55683b4d3bb0355adc539c1459f11432d063. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USUG12403526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73fbcf89e4a61f94d74a7478fed0c8ed45c858bcf70cd7874a8853b5c48eb6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USUG12401648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36782643290712b26d29be4e73ed807207e216f1056771f39ea02b08f0b7903. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:51Z), 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/USUG12400879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa511aa2d8e18c13f3eec6251354d2cfae1b7a0a07515908b206b3b34fe7f170a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUG12405740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaece32f524a1d4e91f8cfae36e09dfe373a7acf225795d81995c1747fb660887. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:50Z), 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/USUG12406968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bc08f2106b8a5ad4f581d4bcac075187a79f1deb76b45fc2e8bc963b9a67c2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USUG12406971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86fd3900c5f92e35c0173ee3dd1927070f5094e955f2188a09b35c9a597046e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:13Z), 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/USUG12406972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb94f27843fb22e931e38bf1c935475f7588dedef8fa0b0c36e3c261e2660ab4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USUG12406975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226f40400d6a4dad398614a6f117422640e6f2ce125c9a06f5b326889e92d50f. 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/USUG12406976.