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 0xd163b220526e88b15c05130700254d821e06bb990fdf6b28bf9699db9645e1e6. 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/aa1e6c92-2dc6-4a91-aca5-164300023aba.json and https://artists.proofprofile.net/proofs/artist/aa1e6c92-2dc6-4a91-aca5-164300023aba.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 0xabe9efc80c1a68d0ecfd00649c035f3ac7016fbb38dce2c3da3c7ade2f90abdd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979549543bc4decdd28275215cb02241590ad11554a0c6c1028f19652157955a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41836244ad24d1534a2f0d2f02ebbedd4b099f64289ba309eb04dcc023534dd3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167c474f47af94e39b70cacfc533d415b0743da5106bac345c6a4d3cc869cae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKMCY2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833facfa2db45a75e992d7c970742c42c860089d3929c456a8b1fc032f0ec45f. 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/BKMCY2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bed40995604ddf00035b5980c6590c6ef3cb2c6fb4a795188b29563907c222. 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/BKMCY2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0590c596c8dd58347c8d1b9af515a7f3a63ea2e0cbcb48717c3a348b297fdf9b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4b7671dd8819de13c1dc8b365626d730d7632d6e6e230f2b32e25a08f4d9ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKMCY2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd47b6c469c1588edcfeb7e4ac1205662d739821f70f4e7d019267197514eee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2418c810f32ebe5efadda30d2434ae5d9550b9b491033d7c36c40e7ffe925. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c35d997649cfeb173453126c187f8595adfd4b4ad6fd613a63cf38fcf517e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BKMCY2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f83fa17e5e62c61e00d04c4ea867803f22b8e70c6ed052b351ddf00a89a67a0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BKMCY2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337f08b4a3655181054e3d14b04058850e60305ed2ae84a6bbf240a07c120a86. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKMCY2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a147a79737742fc28e95b9a81bc9f95a6150b9bf7d066ffae1246b11043ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCYLD2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b0e633244832f5b5ceb1dab0392a31a2198a6c8c39992872dca310d0ae415c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BKMCY2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c6b2e5618f4f13c98724f561d13f5ac43ca2b216bd4216f991928a64ebf240. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BKMCY2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5196d31121be49b048c3daa156f3dadf30485bb253acc189f9dc357350196272. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:49:32Z), 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/BKMCY2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4e525162a6ccb86ff0ba585c6806aad7352516e074bf235be7f55b3ebdd560. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKMCY2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ae1606f34b4b48e326a0c5c3021c5c117cc7eb92b5463163de1ad5f45ca93. 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/BCYLD2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1654b9e3a6a00dd1d57f326d6b7250a926ccb9445d2d89715dae988fa27161. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCYLD2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd847eef509be73ed59b51b48347c667f56aacb693434cbed79d10dd783c00cbe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCYLD2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a67267b4da7dd4885bafc6878c569a13b052fba4394cf0feb69e287196c14f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCYLD2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33cee6cc3f0175fc86a0d3724f28dd9034f8ba3f0d426e81d8cd1caa53cf2fa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCYLD2100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ae1606f34b4b48e326a0c5c3021c5c117cc7eb92b5463163de1ad5f45ca93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCYLD2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a147a79737742fc28e95b9a81bc9f95a6150b9bf7d066ffae1246b11043ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCYLD2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd47b6c469c1588edcfeb7e4ac1205662d739821f70f4e7d019267197514eee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKMCY2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33cee6cc3f0175fc86a0d3724f28dd9034f8ba3f0d426e81d8cd1caa53cf2fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCYLD2100055.