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 0x28df5d49e0468e39b37f6a6f086366c7e49e456e1e2e83fe9cbc76218e31ad1b. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6541d331-770f-4466-94b8-3681006dd929.json and https://artists.proofprofile.net/proofs/artist/6541d331-770f-4466-94b8-3681006dd929.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 0xbcdb07f5e9c4d292126433d2fe41275118cef68f41c865b8764b9d4745521f01. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W12348433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512cfdd00ba450dd0dc65371ddcfc204d4366e1cd07f0b1792fda2d2b034079f. 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/FREL92300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a7d85637cf2d9788a6b9c1a68e66bb0dc387b5034f7f4cdaba91775982a449. 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/FREL92300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32de1d37135c292b2e8f7305c1b56c09e38a043418d2917fcfebc5488fb2c82. 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/FRPZ92347050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f13356e5bf7092e310462447ac9da1f4997db5b9692a5285fec8a49dc81faa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FREL92300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a1042aa249ce0b7f323b035814020c7d23894f818fd96d9cc7a7a2a37b631. 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/FREL92300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0439222fb0f85ad218f945795efb65eb5177ab5b35b29bf209dfe2e294978155. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FREL92300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda979a7bdab312ab6e9976e1712131453a289bceeff3a88429de77acc31fd166. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FREL92300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb16867ef343cafce0bbd688eed91a3d0091eb7383458f2a2491dc9d144aa3. 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/QZES52368277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15de853df7a7a76a605a2c3991861127f9a042c4bed699435fe5702531564965. 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/QZES52320604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bbd10bfff3a0a22f03ca0b09e0da84bf8ad6fc006a4e6b659ade436ee80209. 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/QZES52368279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23908ccef27d6986ce9d232486df0ea5728424709324e13ba8bd05ba5712159b. 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/QZES52368280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643cc46c0fea16ef20d708cda0b92589d73d3a97218b3995f51e9d63288ad51e. 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/QZES52368284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b7d55a4cda9b0434d07c1aa18fe24eb7cbeddd6299e89a7eeca61d823b2dc9. 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/QZES52368285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6f2d8743febcb882c601102effb9aebec9b69b498e1d10ff524f5535661e21. 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/QZDA82270371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013d599479eeeb590e34428d0d0669e99e2a617cd61f9940a2d5c3e231d2afba. 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/QZDA82270373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6530f3ca3fb11485b58276309822b53457b6e2d368da9bab8e9b5dd41984527f. 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/QZDA82270379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512cfdd00ba450dd0dc65371ddcfc204d4366e1cd07f0b1792fda2d2b034079f. 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/FREL92300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32de1d37135c292b2e8f7305c1b56c09e38a043418d2917fcfebc5488fb2c82. 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/FRPZ92347050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb07f5e9c4d292126433d2fe41275118cef68f41c865b8764b9d4745521f01. 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/FR9W12348433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f9c216009dbe65f9a7f8fd75ec20174ead343264acca236974955c88ccff9b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN72367922.