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 0x0ebea963fb9f8a16332d41b88c47af1b4a0c686acb22db0e37609a54d3d4f230. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d040ce8-2f69-4438-893f-07e92d420267.json and https://artists.proofprofile.net/proofs/artist/5d040ce8-2f69-4438-893f-07e92d420267.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 0x453fffdedb389c6432feec0a4b9f15bff10f02ef00723c39d34cd6d8d8a6ff45. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPB2478035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f9d76c14a36c78f385d8a4866e3433f93097d6ebe8ed05e536d099ba879d34. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCJPB2478036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bd73ebf0d016388d41b99474e2510cad88fcbe5199896b72053152e93e77a3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:56:03Z), 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/TCJPB2478042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd266dcd4ebd813b84089761e23419db961414308d93ae4d1f331e64c6b70ee54. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:44Z), 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/TCJPB2490256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263c7dee149f950c7e1082e85a1aae8516a511645f3ffed16f3e5e460bdc781. 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/TCJPB2490259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aac4a5f0c1f2f3fe04a5683922d366ff6a4468030caa97f4e0644ec2fe85b67. 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/TCJPB2490260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc90bd26f275230fa5675e6fc9272abfb6c9dbe031d7dbd46f38ef6fe34db28b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPF2544129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf28914154cfc92624283f119a4a4d822f3ca45eff596126398b3295b03dd67. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCJPF2544144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b127070eea6c3c3c0694bb91ee640fc97bfa6c20b34700d76f0c3f8c5dcde38. 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/TCJPF2544167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03bdd46c0de6e836d76c0792848c17797209af3f6b6de9148df3e0dac3ce6b7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPF2544206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ba2811e88ec95e6ca62d6ea7c0eb8fef42c829d0d5c13a924f196ec92c5a8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPF2544222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d956d2724af87cf90442a81b7fd95e951cee633f8443f4c7a5ae6c6ef4647f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:51:31Z), 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/TCJPF2544267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b144d9bcbaaff6e754492c99ea12a30352b29fa21864ee6d1f60aeb28eb4c6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPF2544274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe764aa8c6a9660c9c61ffba08d18e2238a4203a7811a730f40e22d3273d20e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:24:59Z), 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/TCJPF2544282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70775400fd3170582e86cc1689c360a85976a678f287d4d378f97269b6ca2276. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPF2544287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd81ad4dc84e3405109e7dfcaedbaedbcb24802deca615e74838fa7746eecb1a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPF2544297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099a9a59a0a92fb5920d27598462a0c04c78c95a21061e0aa2b896b78c182cb5. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCJPF2543920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184438ab81a7bed25b5b6b6191f14dc7aa584ef6d050cf7e26a8164cf9e1f49f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPF2543925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8180a5f6c33312e634b976145121c9b0c97cf7039c4fa53a246869980a1f94ab. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPF2543928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392930ac619e3410f12bc1c937ca957e963447f06c0cad19574e0c648f45a1fc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPF2543933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dce36dcae50742b2359369e668e78e0a72c71820eb4afde3dc102c83312575. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPF2543955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53227c8ae6c1daafdba9558f7a8a0ee7854619c5a239a6ac301d9a3b0ad4e61a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCJPF2543960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3852320a1f87bd289ce5ed2e1ad60d9fe901a1c75f5cc4e8995cdbb7dba8e73. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPF2543966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e86d2d10090b5596e1656e1c903c6167934167cd8545c74648edbf21947de9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPF2543970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaba29f6c066972c976da80c5a7ab0bbf5b0ada80e5583b8102a04e958e607b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPF2543975.