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 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 0xa223758620a665cd5017697e7a6864424fc56f4d1f88fd8ccf69081c83d86175. 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/809a6327-eba9-4714-b224-4d4dd8a9cdd5.json and https://artists.proofprofile.net/proofs/artist/809a6327-eba9-4714-b224-4d4dd8a9cdd5.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 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 0xb65a6d31bd31d4b286cdde26baeed793600849a226b70e9e78b29f54e4e9278e. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USCGJ1328272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf14070ffd45920915716d40dbb854955950efb5803c24358e8f611e8e7b81f. 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/USA2P1423412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a51cde6708970199a56622229187195f1db98f6296506c7c6eea138cc0cba78. 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/USA2P1423413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6116df9a5c4bd2c23acb94a4b6f78a81e956beade71e12ecb335447056e1dfa9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P1423414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482614107bc71da6abddb41b96bf4f04124367fb8d49b320367a1ceebd7416f. 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/USA2P1423415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a3cf431e8a33721d5fe9326363d2a7ab950c0d335fc1481e0aa431010b0e8. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USA2P1423416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7675caf3e43044a6e546406873264061ab0040578b12c1d21e12ab2c21000e55. 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/USA2P1423417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4204238a0ec501392d94b3cb975997ec5ea98a000103d16c32f6800a0c14cc. 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/USA2P1423418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33df1a4521f7bb214b58e6ecffbd8fdad2407e21b19c7d5fcd1b391abddb92bb. 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/USA2P1423419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a1d5648d8d1835327826ce9c162e7e766eae30fb123fdd490d7227be918534. 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/USA2P1423420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e761e7fef8319b4c800b075a76e8634c01d38277b9c18cb46b37ef6df9318a. 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/USA2P1423421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca384c41d1b6f1651102e0d93276a19af17cca78cdcd39306b11460889158ba8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZ7TB1700001.
Change the World (feat. Jacob Hemphill and Raging Fyah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7cde273df4ee18b757a45eb912cd514f417b5915bc919a19509f5564fc11de. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA61807341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd290631df84b485436b86af942ef7ea7400c34b2d260d136a89733e4914e45. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZ7TB1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c8101e942913df87bec43c2b5a0ac7c9c12f7027f352321b0c91259b68a0b4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ7TB1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d99ac6209be0fb1944eea08158f67b9c6a0a2b94820bcb052462496ab27087b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZ7TB1700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9173b6ce72a1ad39677f6daaab1c62719b4ba6857e3d5cd07eefc610beca251e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USA2P2009194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aae00be0a0435ef99d08a105d2aba354df8318b08f6b561cc2cd27198b8ddb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6M2498888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db5265a6cf9bf3a814cd1d0e38b28cd32655005e882f805f193a77b3d0cd5fa. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFH2495393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8c456ea27ea891afdcac6e1c2a92db5c09955a61307b2590d05ebd612000cb. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QMGD71500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73054766342845f05012f54810470bd4cc18a9d5b0bdcac82dcb31506a14263e. 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/USLZJ1907754.
The House That Bradley Built (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09faf9b0a34cebd836b2acd98ab472769c545a8173c470c5b901e8e1b84f7234. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6MZ2089781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dd1f506a7c88144d01739aa81077f055d8d53525807b6208c727a680e89db6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABY1415401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09faf9b0a34cebd836b2acd98ab472769c545a8173c470c5b901e8e1b84f7234. 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/QM6MZ2089781.