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 0xb2d62d34a3c927ffeb2a4b5593cf37f3f8a853ca25b59216084258022a6ecc91. 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/b961c070-dd5f-43e4-85d6-0388979f2738.json and https://artists.proofprofile.net/proofs/artist/b961c070-dd5f-43e4-85d6-0388979f2738.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 0x6876eb1694790bb5666212b480786d7997de4a35f0fddd8c841260751d32b764. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:47:25Z), 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/FI7S51800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f45c5a1ea945446ddf4f1992cb0878a9cba161aae9a874b04ef0e480f3ba50. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FI7S51800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6794eaef5b06d962e53f388c1e0ff2e95dd5505012429b9519073f3b456e10fc. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:26:43Z), 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/FI7S51800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686f8d2f96bdbcdd08e99a73da9702d2abfde1a2cb303c2b41cf2777092b3aa. 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/QM6P42095030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bab9b7cc67b8bf3076d4e08ecd29f35a1be39113b359b691189b5a3df45ca7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6P42095040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9ac120c7581f42a321882cec2e9bc9250281ef4f97c79786f20efcc9b51e50. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QM4TW2041543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0b00bd8bbbb7c470488e6a2ad33a00af06b390f3f6f1751eba68d8c7a37cb1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:20:42Z), 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/QM4TW2041544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8b27c8832d05f7a3e2b9a885eb07738616b9f28c9fa321b34c9d3a66b289ba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4TW2041546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76484681cb351665b55d909cd7da9a651c108fb1e49b5b9b79aa49f291405d69. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:49Z), 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/QM4TW2041547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e774118fdc652fd89f463d7fbfc45d814987ffdd57822a30a7b33d29ca1c942. 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/QM4TW2041548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20947ca3eec1829ec3c2ba77aad3af50105788cc47830a8952763b8cf2ee5b14. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FI7S52100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5629a634edfc6d6bea3eff1f6062b777e6b22d6e6bbf18b88726d19b0eec5034. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FI7S52100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840ffb76864b28a95ffed87b11686e810e2e5f8a91249dfa902385eab82b3357. 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/FI7S52100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3461a886026b0a563294590965c5de2fe80d5aff7cbf06c374e5c55fd5e5879d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FI7S52100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92254ee3a5616941f49a7807c6e74f08d1a3e3f8bfc04102fd724e5e1db7ac8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:44Z), 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/FI7S52100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cd17a81297bc890913459cded37956de427b42a46cb17d7c43e5f498601e60. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FI7S52100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7023280e55e0b8444948a4c057c55f05d5c58af7ed98a79d403dbdc7f7f27. 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/FI7S52100222.