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 0x599b6c6883ba1647f91862638f20f2697abf2d8c8d04ad2d09fbadbc2b899cf8. 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/d22a3477-625a-4c85-a8d7-9cf036e2aed0.json and https://artists.proofprofile.net/proofs/artist/d22a3477-625a-4c85-a8d7-9cf036e2aed0.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 0xf46a682f5835440f8157b2fefd7b9faab5fad62adec52515441a6245c475c08f. 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/USE7D2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60e6ddc215922d77457f11c276ba7f1c332109980db3f98a2b76074fc3bc92d. 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/USA2P2304907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16150dac506a1532b502dcb4678790903296b568f5313cf4a4211264dbe9f4fe. 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/USA2P2354564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e41fae345578507a3282287e9efd858c8f7efb421787d879123e4787ed8f92. 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/USA2P2341362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8c27f940385cf6ee4723098148f856918c232348f323897e030cfa2d70e8a. 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/USA2P2311533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fff9fe70a5382fcf66427d32a717685972cbd7d4632876fe2aaf3fbeb337e8. 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/BK4DA2417350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2629ae1e53bb0501563f5d69e5d367ff4d67868c013053fd869b4e3962b9af. 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/BK4DA2417354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91964f82a149024c4a2c71f15375abee32a34eeaa4f55d2edd2cf9e3141cccdd. 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/USA2P2240788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe176271e0eeca688f801802bee7875cc82ec67b847b3bbadd8617b68b728c482. 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/USA2P2240787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc90b67e5a68ecd134bfb5610640bef092ccab03c91327c1412187cb34513462. 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/USA2P2240786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843f7f97285c7dab3ad2b21af1afd179bd3982a0d62a5c12e13c8f38e38884a0. 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/QZK6K2029183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cdcfdcf5a49cae3e42c697342ccbdf62ac7a6c5d58826c2da43ec1559f2993. 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/QZK6H2081584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de01a7503b3222168315bc90c8424e4d1b34f66d8842dbe626fefb8aeca2a0c. 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/ARC572001142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dab92902768c4250b4fc44bdb7ed701e9f103f3372d3858bd4f855357df18f. 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/BK4DA2504250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c887d5273d84229ce216b7b93e9e6bbe39a33885a66542975f041a3eeec37. 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/BK4DA2501173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb591b93181d59374f57adf32539b82ef7274fcc11e8255a117884346557e17e7. 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/BK4DA2502013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4533438552777668b60c4a239c8ff7ef087f220a66f064bb069b461cd282efdb. 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/BK4DA2464609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3345c353a0a4350ac0567f51808bcfffb9cef07b199ce79840b9812face8b2c. 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/BK4DA2464303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d8806cfe6e817e53ae9e14302a6582eff45e0a18acc9f5b02b2ffe55206bd6. 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/BK4DA2454642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7af1646b2dda8397e0b2610598817576425abdf0ecb932afd4437ad8de26bb. 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/QMSAV1105604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f6562fa96d28190ad6db9825dbc7db50cc6c1685a5691d1be80f8deb6fab0. 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/BK4DA2440201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf36a1f6fc9718d2329da7e301b01194599bf8b435b245156e2e7f1edfcd558. 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/BK4DA2447239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe7681a69b6f15ef3bf1dddd986fe5b3be8eae37e6a511af70fe9302c9e0eab. 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/BK4DA2431431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc26d1a51e21d25e100a265eb4d76301f2d15711ee723721fcf947f3a3797c. 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/BK4DA2429432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237c42b02839432b81d788cfbdc4bf2f86fe9a309934fdb098749be8977838d5. 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/BK4DA2417531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6062c2c3b8d8f1060b1b51970f835db369484534a25512f6a4ae180035119888. 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/QZNWR2489185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf9607bc8ba0ac06697d29f27adcbb244863049d06cac70b5ae41f82a4dc69c. 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/USA2P2421091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc96a0809648077c75c18b2f6b5b0cbfb59861e78fd09d395c8bb55e410763a. 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/USA2P2417128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4986ab29f7552724200231342ada754fb3f5cfcd3e3c28b73282a23758762031. 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/USA2P2408210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7db136cb11741a27dc1e847a4c9478394c31ab2d983a1f891560a8b2d938654. 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/USA2P2400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9d82b45b3f1d05e7d4a9215a23f02f1ab9c7ccac90bd12a4e272ed065599dc. 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/USA2P2361821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9316bbe7c7f492c58b46a073ae311483aa4e5959cb6f58491baeaa974eb48430. 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/USA2P2355845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b222a11895cfe477e9bef45aaf2037fe5dfe6f717253104f278d1b089ee697. 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/QMSAV1104708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cac5c9b64c017de148db9548d93e354c74c684db4b162bb33c5cb86b82f5c4. 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/USA2P2349569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff7972bf7b20581320e94fa6e1df423f52e8e749b5d5dfda6c90c14ef8503e. 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/QMANG2253256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918067d1ce75fb1187e515386e8d44e12e3853508911217d0535ebbdb02b8da7. 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/USA2P2336575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8a81ac82aa0dd83d7a3c2d5143c004d0497cc5a1b4b2be05f1b44646ebb561. 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/USA2P2323599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8523f1cfd924a9aa65037f48c5a21ea587f8165330c28e9d31e8a2cd17fa7ab0. 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/USA2P2320350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7dc2186d61c6da5f598f13a1cc12d5a4d28c7bf769d42e3741988bc5ec8815. 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/USA2P2315585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a75c9fd434069778c095d335e750908c7799a967bd0b83ff3aff37993878cb2. 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/USE7D2300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a4a0e54d460d221212bcf09979f8f71fe014b6ad7e9735ad8ca5abf4af8943. 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/USA2P2246750.