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 0xcd1c35f30706d71cd84a47c769c013580c9344e67b369c6afc7aaff8f42378a7. 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/dd7825cb-1502-4a66-ad18-224bb51411a9.json and https://artists.proofprofile.net/proofs/artist/dd7825cb-1502-4a66-ad18-224bb51411a9.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 0x5d4980cbb0db65c4f1dc788870fad75e11473854a39def17883cbe9a8000da4f. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QM3DF2205703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fef2afa4d1a61a7d8cb1925569b9bd92f01e0c77045eab194a52de73f25cf3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:37Z), 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/QM3DF2225622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97703f0e0b23699623f2dd4e6d31c5418cc2e80a73cf55bea1d2772d0858c4c2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMANG2205608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a529afec0b8e89aaea0701fe2f002074042d877ab627f72fbefe19cc163b381. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:20Z), 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/QMANG2410930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb208126bf7cfdf6dc98d8bf918d63a3c739ff49726b6e41920896b8c0db5530. 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/CAQOI2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f63f4cfc65148bc0b5b32443172c3a229eefe188d37a2aa9c3b8eea8cc8c05. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2415271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2404fc388312b459bfbe0f45241deae7c7d88614ffc8fa1f95c26a8c5654e2b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US3DF2435363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb93ef0f7d3808c09ce7bd9f7d9dc26b8d8d074cd70f763ab57bd9ddc98c860. 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/NLSB72400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbaee357cb37709616745912575d2e5333a7f16fd23d223062d71b0e5f1ee9a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3DF2473787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1dea50368a7562f6735197c0520d21845803e969bfa27ef4e5648b05546dfd. 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/US3DF2494946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1802d236486342ad818d7b7c59697593a9a4f3e53317fc596d4ac6504398b2c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/US3DF2495281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb108463b621c948ff75c37ecaecdc764ee15262f0f5a5e40e0b2b4aa03543079. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/US3DF2498640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee890c4a52298680c5793a86c5abcae673e6aad1da4b024a86b6a6bb0faf4269. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2420940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d944d064880b73bd83031d6f7456175952fa55ab9b43a9bcd4c9ae9c8f46d09. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US3DF2504602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a6eacfe1de8343131016b6f5a5662a7f9e117968f0f1c84302e2458bf53c12. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/US3DF2504609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1fa0f34b6c218d4aa1c9ddb19f942e7871fc3296560093e5b510a5a141a953. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/GX8LE2516192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966b0de00aa2edf0c65ac61e45f65689cb9812efaa022cb317896499b6a7592. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX4R52555208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cf1dc2d77192d4a8c1802e0fe7e391c560677c6d63ed4d15810fe806b63acf. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/US3DF2546716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e596e42bc807afb86211757d03e58f7c38ecdba803bc7bceb9f82ef55f8aa24. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US3DF2546718.