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 0x08bf4beb3745b78086a2366f1826ee2a8dfc9f81275ac4338cf2a7b2302deb3c. 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/bcd908aa-83a2-476a-891a-7605f7a29a61.json and https://artists.proofprofile.net/proofs/artist/bcd908aa-83a2-476a-891a-7605f7a29a61.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 0x7c9dcf8399c6f785267a81bb6dab629bb2bb8a306b725aac731911b48abc69b2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USDY41981735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb38cd1129f62a108876cc1972b78471a117a05ce9f38739358c0d26092e2da. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:25Z), 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/FR59R1931842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6618c7abd1b0b19f2fc8ed66be2659bcb6f15686a877a27dda4cdf36dc2558a6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:20:11Z), 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/FR2X42072070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6560e70c54434904c7691bde2aa4322c55b3f0e6b8e1bcea922fa15c8ad8241. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:32:46Z), 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/FR2X42072072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f685b719ee87b5a1552010750795f8cf3f26c569e9698f3a5717a28b1c82802. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X42072076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35dbe0fbfce30ada4b4b2563203b60192c0a5caa82e623ec05d8c8d88cc62e2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X42072077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6618c7abd1b0b19f2fc8ed66be2659bcb6f15686a877a27dda4cdf36dc2558a6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:20Z), 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/FR2X42072070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146b35cfba5433f388b5a551a2692381b63ad3905fff2e3c5c5251b338835c15. 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/TCAFK2141239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6a1019b2bb35b0f2d4942922331f3dd5cbfe6806a4e3dc29eda61ec2bfa69. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:37Z), 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/FR59R2196440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19318d570346a134dcd699f989643180700232a02c2780dca57bceea37733552. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R2196058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba62b5bfbbfa2c96c5432daa3a22afae6c2ce6942e3bc28c26767267daa048. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR59R2196034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be82ca3c75929f6f955f6314a7bbc5d332e887bd960570933d45df46b74a85. 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/FRX282126742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9797af9e5677613cb9629ff2a1456afac0915c3fe490459ae747027928d2e318. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:12Z), 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/FR10S2290469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2466da2d96099b4afacc1062e027ac35ff996e321ac91d6e7e93e3f45f53bba5. 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/FRX202253422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b44781f2f4dd5d75283f31cfd48ed3415e9f40f100daf3f98da693bd4e9f2cb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:17Z), 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/FRX872263741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44fec9b659a84315bdd28e997a291822b8590c023c8c00d6e0279b7d2b1c28f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR2X42346623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98681cfcb7090cd1a7fc85e01db1fe88fcbe86300e60f697d5dc7771b331801. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/FR2X42394626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a75f23c46a1fb0d4c793cef522069d8643a9ff9aef05e1f5d456773695622e. 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/FR96X2348120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc670a0dc468eeb47eaff3bf3ef42dd0af4929c81ac9bb81a48900d590db0b20d. 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/TCAHI2340357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374d449aa60906bb2389d79bf8e2bcdb3ecf79a30b83584f70844204ddc833c. 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/DGA072368997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888b48888ca3180e022cd23ee91397671207f1b9d2bdc307d07c40d0393ad436. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DGA0P2319433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863069ad883b51da40592986d450889b49d04c3a4e264568ae2f42a0feaadb51. 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/DGA0P2319434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b77a6c9bfc271e793197fd2707a6397942c8715207926c8856e518e5ccb1c7. 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/DGA0P2319436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fdefa4bb4da26868d81f3316fa5e5d07e1156b72904aa6270b67b1321febc4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:55Z), 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/FR10S2431688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159583d157218752b1bdbc17ef137dbdbb050e850dc38a39093ac9248522643d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:53Z), 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/TCAHY2483979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eded0800904d2f25653784742e7e34228c139b8da13716e8794eebb7434d45. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:22Z), 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/FRX452474397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44129b20681157f51109c6f6939b94ad37cf353495daabcc28908c8d0270cb86. 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/DGA052454099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e2a2c2a00eb3cc0b930d635fc332d51250a586e1241b3f27da6663863b2934. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX452531972.