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 0x7c96c6432f1a2904825ecf3eb82a0e806f32f82c0717af3bfe7ea991241dcef1. 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/7fef70ba-9b6b-42b3-bf44-19167fad76d9.json and https://artists.proofprofile.net/proofs/artist/7fef70ba-9b6b-42b3-bf44-19167fad76d9.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 0x0bf016bd2f61f27551cf958a4c9ef507d520b60f0bc24f0816462c57d1e4238e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM81300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab09789c70b672ba23d80bb95ff7271ec43bac25615f321e44b9929f2be3f7ac. 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/USHM81300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262c7459fa08df23d06b983331aa016aff05d56884dbd0632e4f54be9284ecd. 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/USHM81300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004810d126ba8d10e3df3e0307b275b3aa19078bd7fa484d557ae885d1923409. 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/USHM81300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd8d13a2d4f7e147fb92eabfc74932d3e4ec4d8edce6f53fd62d9d1dd131d2. 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/USHM81322198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724052d3e2b527e5d56a4c8f44c5ca399e7fad9ac43926647b31d88ba02e83e7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USHM81322137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8aa681227eb289ca82f9f963221cef83d6f06f6702b24ca60904672d2c104. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USHM81302182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac666b066246116955093d256de8e12e12bb0d37dabce30dc78f180dc2c61d0. 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/USHM81302185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1833b007f161a6650f85363283d15b63a0ebb7e1bf262659849eced5acf99d7f. 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/USHM81322126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e11ff3a1bbc7e31e428ad67f39694ce195bf42cdafbbf5a6c0236cedadb7083. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM81322127.
El Tiempo de los Milagros No Ha Terminado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3fdb491cc8a3dfc8119aba35c78e3e8ab6703a6d6a935e570ef216b5e9140e. 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/USHM81317647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e398faf9293b95db47469db7adfaa7847ef2c8be84007eee2c2a4c0997e38ce. 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/USHM81317648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c6949d690551ae294fe3f9cca8fb67a600fb18f84b5d0f9a0658130743bf61. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USHM81317649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f88b11f008617b022938fc63491f04e0b234ae8c70b1d818df1e83ef296492a. 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/USHM81317651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bada92f10af69be2f9ed39d450dd5f76077c05db79d5b6d8667c1635d1e0be. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM81318333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f9b6dcddafd029f9649df81b526c0c1ca5976df0c63fc02d257fa2727d21fe. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM81318334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9a4cdbc3de6d14d336cf7affbfe1fc46926928a357bbb245881490a3a94417. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM81318335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe035025d898da9c4be5d9b27237a3b4c31e2b01911a2336c4b9972f41207c6d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM81318336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f7a5f3dd33c9353bc810306b096df880b7005d1939586c6f239f73b519576. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM81318339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8af5cb292a72fb46437a4af24db9c7598069676050c760ea0e16c75dbb33f2f. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QM9AA1450113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5cf88ba3ab1e632aee613ad9eec570261901fcb868e0c6a93b99e8f320433d. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QM9AA1450117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066fb751260ec410be3195da0d49469cbafcd9e06291c44e683b761722ce7828. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QM9AA1450118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94038540be526489f6693f2d13d2b8e57b56232961aee388b39031282a78906b. 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/QM9AA1451552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79454ec933442108b4eb2d8cfb604e03fe5fbaab0dddccf6f5e86a8e0564aa3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM9AA1451405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b98133f00165d026802493f411049ef950d4c1e2dbf436a77d0e0d4e69e8ec. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QM9AA1451398.