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 0xc262d14066906096944f8a011cf4b50489dd26f0b4d6ba9d6eef4edbd5df4de7. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2869637f-7ec3-4d4a-8882-aa38f5c14a09.json and https://artists.proofprofile.net/proofs/artist/2869637f-7ec3-4d4a-8882-aa38f5c14a09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tribute to Late Chief Akunwata Ozoemena Nsugbe
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 0x2599a69c5be07e4219507ba435efe43b73bd524bc618c7e65d590d15c3706d9f. 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/QMFMG1442873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7369734de715234a90a83d34e3552c01eaa784feed110b283ba98119a4f16e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMFMG1442870.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f5333fdc8004ad1540809c10ab529b7d20c02f9a941c8ff1a4b5ac4180c206. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QMFMG1442871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749225a53c570617f9f5c8d228974d2c7bdae03f1a97eae8a1f8abba3c5bf4d5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMFMG1442872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c0e7d9769ff4e5fd674b03fe81315f9f7d3f398704f7e85fe5e12ce9b77703. 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/QMFMG1442850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40df6c80a2d485a1dc71f43078292b9ffb65ac28f51f4122f900b200f45585ba. 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/QMFMG1442851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a6e9f14038eb306c9fdca36ef4277fcccc00ff55c4a9c8cb2032ab9fce54a. 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/QMFMG1442852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0875144eaba2d7db60584e82ca371d6af54f50cf316cf7ee703fdb8b4344a7. 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/QMFMG1442853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45325b21e1d45d704ad4d7b6abeae33d1a980ccb80a843baf77fc5d1f625ddc0. 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/QMDA71333458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c646f22553769e71a9c17ff08c91bfbd7c70d834162cab5b69c919d53e8763. 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/QMDA71333461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22cb36b538283d04aa5372ab7643d35d9112bd00a3b90004550eb8444cb2a57. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QMDA71333460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97725b4210690fb2a126151bf0868fac31c8c5ba76f266d6c9cfbd510edaeced. 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/ESA012247830.
Ancient African Sounds and Rhythms, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67554857a2b335d92f381a68fa016d66dec38c1e59c967e2911f6d51c6d01d3e. 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/FR59R1725329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99071ac2f736bb650a794ef4ca675aecf589f1b7c1d5c58e64131b40dfa68bf. 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/FR59R1725330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bd6fdd58d997afd2a7327fe2bf9e536be2fa421ac89ac22d3f0c8cb60cb0a8. 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/FR59R1725331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be67a6a5d8a9b326a7320c624d3a2e98a459f84d64878dbe7872ddfec9db4a8. 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/FR59R1725334.
Ali Chukwuma & his Peace Makers International
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ab7dfa5fb61db71f338cbac1ad0fcc907e4ef8f9a22d54e09263017f1731f3. 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/FR59R1725335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83366cefcaac68406f16590ace1c6d158aa65739d4e54713b7fd7575e27c01a6. 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/FR59R1725336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd3cf4fdc6bcfd11a58d745995e2ec3b323ac9c45c14fac9d73ea8d5b308b6e. 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/FR59R1725338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa446e1ac03ca908c08d588193ef359237b45d76ccecd20250b09b198fbce312f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R1725339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d594a419271b2ac5b8a83dc391f25731d5094b8b54dcad7d7623cde818f63fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R1725340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3290933ffd68a9b8f34239670d36f9ba0ec0db5083d3d1f49cc3be7ff5de39df. 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/FR59R1725342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b433ee285a764f736202cc4eeece279fedb4a93ee22ceb468d9138ec93c247. 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/CIXTH4850683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86763cd104f915bcb9195765dd46844f657d0bfe32e614dc5893cfdd66ae177e. 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/CIXTH4852784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e7bfbe0747f0ebe44d6d4eee9ae271dcedb5e1710bd3be1b41b80a22bc130d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZNC62000698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d7479b6f59981af48ba42eac158f1b65daed18838ed488d4b9d1c235a6c398. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZNC62000699.