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 0x07c012259333c696dfab8e1e42c1e2f28c6f65776b880697769bc6d226e1452d. 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/fa35ebba-42e8-4ed5-a37c-d34dc0112daa.json and https://artists.proofprofile.net/proofs/artist/fa35ebba-42e8-4ed5-a37c-d34dc0112daa.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 0x2b0fb3ec885e7d7cb7aa2a9f61a4947593680f67319e92d2188c1ba1b962cec1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM81986054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8d1f1ee5bf20b0aab2ca87b45f7fd4f7bd24912a9962f935e0a8b6466f0249. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USHM91921926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3074d9e240ec111b9c8a00e5e2d72ecb6a6ea4a0566ee3be297ba402a278ea9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM91921929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5352c855d9c5ed30ca809f6049dd62e33552b203147d3d2c62768cecc1548957. 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/USHM91921931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e6362f87adb1a0f0d61b04ede653da4dc26c6e11ddf530d07de52eea3f6323. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USHM91921933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69a41543d8bf99a3dad487e879fb5cb6e2c18ae7e4c8a58d71b414f2b6d5293. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USHM91921928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf5c166496f17011c9c0b74157ca87fbb0b816dd1b04648a0c16ad208e4c07. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAEX2007582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f6d2a77ae19a18f6cd6922757ef2e6d888478bc6acfd39c03a97e0720b56ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFD2092086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfc758ce4e12a0da180d2f7609fae94fddde11f2dec3f15dfa666f667919962. 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/TCAFD2092103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c47388150722a568aa21d2b380600cdbcc7571dd95e19dd8bb2d394c9e3a61. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAFD2092108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dfe4468c01ccbe49e2bfe3ddd95f229beb701c56f7041f65e8ffb317a7d255. 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/TCAFD2092131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bdc3f2b7a599117ce96ee2544458d5c3d8a975214c2bcdf31fbdaef7245215. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAFD2092136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99461605bc7812c7b6409774905759a843d944735767e51add638dea41fec53. 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/TCAFD2092139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e612b2133fa3b9aa2d7c4b573609697204336144324d7d9a03328014f8d0c. 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/TCAFD2092146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafae3fd200b9490d91f2024635d7677d43a318f29a12fd0fcf4aa8a616441a97. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAFP2171341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c915aa494bca14f04a1056b780cfb9640f4818d455340f72e458ce30f04f41. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAFT2155205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2caf764ee337f3d5b658b32c90ad7e320a45e180b8916a6c0cc5fb0dcef3369. 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/TCAGI2221287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6424d4c6563ca80fba6c02650a75cd204a90b99cdd534d8f79777559885e39c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCAGL2296773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2caf764ee337f3d5b658b32c90ad7e320a45e180b8916a6c0cc5fb0dcef3369. 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/TCAGI2221287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6424d4c6563ca80fba6c02650a75cd204a90b99cdd534d8f79777559885e39c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAGL2296773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52db04b2ef891690428de7e67d449941859cb66baf78e662f1bec458bbde312. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGO2251542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcef8e0662de0303b8976b87ca3d02cde996dc43e23a4624954b9b74c6429eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGO2251573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523b2285638526ea651cdcda5f75c809ec458d97aa6b9b9e7e863ca29905f300. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCAGO2251595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3054123fb5e4a9cf935859fe171efbfd6f5e7df5f3801bc0a78ab566e3aebb44. 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/TCAGO2251621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46424ffeb46acae1bee18e06faa8d96a3e6c9977dbb06d8a81dcca22e9fdcecb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAGO2251694.
Ranch Girl Dream (Live from the Ranch House)