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 0xb748343d7e30ce4e8878e3d1473cc932bbf76c152f3ba6ebec2ea61f2c4d0244. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e0ece0d-4e8a-47ed-8215-77bcab2aa3bf.json and https://artists.proofprofile.net/proofs/artist/2e0ece0d-4e8a-47ed-8215-77bcab2aa3bf.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 0xd12d70662774c468a64dedaef8868785b2e29747ef0f244644db01025359ff2a. 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/USHM80468040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adf8d84207ffbed68b737110714e580239d3e56f28b3077b5afbf34fab89a04. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USHM80468044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4970861c5f7394ce78d958ba1038147d5b711e51dc6699f6c77af52c66f1315. 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/USHM80468046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176bfa913077b0352b15a1518398383aec022d5baba7a545f8fc901e201977cf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:10Z), 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/USHM80468047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f0cea73cce8ea26c8186112332ef1c88edc9d8ba45da15ee89123eccb882cd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM80468049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47a7b911fb05528736d182f8f29a8d20498d4eb7acf2ff9fd78936aebde0e07. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM80468053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d5793cf0c4266b868b03fd710f9c8a24a215c84f1065f846ed99dd6ce2d3d8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM20561132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24f5f20ed5fd8a7d85874f64beb5e4e626e1488fd8d11517a4d29b906481581. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USHM20561134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cc34d59680ea671104703ac38e65e2bb889c98f9e4765f4ac7fe70497f5530. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:32:16Z), 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/USHM20561136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc268c87783854782916f8bdaf9693ca61e67761edf7e0460ad2d8070a5c38af3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM20561137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a0862b63ce498f1e8aaa0a53b6a33ec44921a44043d5d3030c9c92f83b509c. 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/USHM20561141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd0199bebde675056b0309744bd4478f3db35e80850d29f8619349a327251e4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:13Z), 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/USHM20561142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4c127d38276ba4da045f3f8ba6d2d42b0ccddf13018f7067091fee85750487. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM20561146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9817393f05e31927082e3c79737a522bbfc577a4a2d7bb458cbf1fad1300c. 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/USHM20561147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec14de813a8ac712fc0bbee1bd6ffb357eaadb5fc7dd76e345b6be8c112297f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:21Z), 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/USHM20561149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275646a979f6d231eb98833cfad38f0b9577fc0dbdedbaa2c1a5619f0af2eb02. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USY280770474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5579697af5f96589ff5a92a6a130708f3b0273bdce223b8102820fe36acab32e. 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/USY280770480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b64979b95bc3ca788d783fae21d0f71e8110056d657a3a968e2e3b0a9452ff. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USY280770481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a670814db9431ecd50e86198b6c4f0c30066caf6bccf7dba1476fe7a96217. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USY280770482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35108b4d796a61fd6b9bd42bb3ed4fb9ed0de123b4ff42fa6fff6f3a8db8ee73. 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/USY280770486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cebff52c2eaa9b02e247930b5c1fc1d989dfb38cf1b3e99bf1606ac6b5fa84. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USY280770487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26219ecd8c1fa597348e191a70e5d80bcc49f6449c4b32902977f95923ec7076. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:46Z), 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/USY280770490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781cc68d64ed4dee1537cd145905c2f1db2320d03585b957a59b7754bc9aea6b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USY280770491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d79cc7dc1b57b0e907da28f95e383db99da474313dd0ea0eabd115f38030b0. 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/USY280770492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74f693d30fa93f8842228184ccbbf511c72f25f185de13e1577d84f14effd9. 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/USHM21731379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ccfa6a1a39bc1a5d192badfbc100665d882d2cf67802219511b64512f9893c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM21731380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d6cd55021bb9eeb1b2de6a5bb0cba1e5d9efc1e75fcb544186b5416a010aa2. 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/USHM21731381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1cb0733025076ba47e1dd69cae13751586fa09ccaa63dddc572ede93047141. 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/USHM21731382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337d38491e0cc8a7912bda69ed529016b196ef02fb24660fea7a40ad2bf54d89. 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/USHM21731384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e31ee2be0e56f0eea137eb65116b8e25e0d8d1b222d458d541f3912fdd36495. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USHM21731387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92cae18a81ca4bbc649b57e6097c3483dc5372318a81de06acc73186244230c. 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/USHM21731388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339f449ad5ae349c29dd23ba8bd416aef3d0c0db39280a2e4d1bc1fa4ddcb010. 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/QM9AA2080412.