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 0x5981c61408a4ce1500598c7179a9f86bbf525c7c22cde5ef6d092b65d494ee0e. 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/fc6e6bf7-ebc6-4aea-88e5-5e05f67a2912.json and https://artists.proofprofile.net/proofs/artist/fc6e6bf7-ebc6-4aea-88e5-5e05f67a2912.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 0x60c804df87f779a4ba71bf87c4d56d91da51b87deb6dbc90a39bb67c885ba7d4. 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/USDY42047004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f038cf66c38f5da31fdae926c15f67a1cdaf2a30f66c35ae9ca9631d1218927. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USFVZ2090381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bc4ebcd9328177ad120e1bf68eefadc1cd6b33b9544784ffbaa5aa1cc16930. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/USFVZ2090383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d4914c485c9be11bce4e2805cbd0dd5ac5f77d1adb63ba38bbfa6b92dc93a. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/USFVZ2090384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d77aad3b7c42374be3b1715a623bc4b997d8446b19a99b26c5dc669d94ce9c. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/USFVZ2090385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffc880a285a732f4038fbb5ac9d0c5c4cad4ccdd909fe38a6df796d1c9a3b44. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/USFVZ2090386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a4e6f6d36136fc00f2d19c4211c2e409945315a7a76904af41cee3021d6cc3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USL4R2314116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd086f8d553b88d52aa0fe700908eca53be0a0ad086fb64c02840cb6fc9787dda. 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/USL4R2314117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70935cd59663f851c85d2ff97869fa7662eea874405fdd93035d7c14f03518c. 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/USL4R2314120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aad477fc611a0c7e572f95ce430a04e14914286f65375fe74c5ba177736643. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USL4Q2320220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd19367aad41bbd51c7d31d19b103ff2d4c2c535ddb9ebc9859e4696098f65. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USL4R2314121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0807eb18f08b0849b31ea398f9f3076dff0228843a9551b615008073ff8174b. 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/USHM82412308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea003b89da6f40a11aa51ebba0a5ca401595b45dde0a5f53712bcacd3fcb81. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:10Z), 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/USDY42452676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50ba2746dc8185f0325dddb3e66fb90a3cc7fb40959629d98f8b9c9f2e7132. 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/USHM22432428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201d6a26c73a22ef7e45a6e920d524ab8258706fb0d43b3025c3bfa1e39efcd. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USHM82470627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611961dc21038a76abff20a2176909d986c6342d82f20df20eb30bff5fbca201. 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/USHM82470628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720954c661c3d655bf0ecbfb9a9d24082e23adcf674361987b661339110d10f3. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:43:31Z), 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/USHM82470629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4166593c818418d522b450ffe60be356b3e5dc9d09453b7b58d0285541d2466f. 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/USHM82470631.
Feel What You Want - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc98d2111c8be25569adf196c5c6446eacfe90f37c11725c4b0f1d56ddccc8. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QM99V2407101.
You're Pretty Good - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c661f60c0213ab9ffea670e03c311af0e95c1a8740ed902f3c0893dd9995e7. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QM99V2407102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe0d85c4112c6b4187013098ff7b360759471283b050426d49fb1ccb36b5376. 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/QM99V2407103.