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 0x210e223ec71f32db8e5a732382047529cf4485be9598e8e2571a44fdee7d465d. 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/aed27e1f-2775-4b39-8881-4cec5f64df6e.json and https://artists.proofprofile.net/proofs/artist/aed27e1f-2775-4b39-8881-4cec5f64df6e.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 0x14f5f8bef9aeef8d0fb4070616d51142d04a483c29b333df94af0fc991b54046. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZGWX2052114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4523df8f83f1d7b536785a5a88d65faf2b9d76d2c339eee92ce08de8c77df0. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZGWX2052118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98178de3df43be9ff30c852a3705182206a036b0c44b6c566936b4bb9aba1d98. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZGWX2064484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1cdc913f8d88e6550b4574a8b6a747bad9c54db46060a4c560662a1bce616a. 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/QZPJ32298376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d8cabbb378234ba0263f7b1e638d1270dc65d9d61ebe33a0e6e22aaccfa0d9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZPJ32348280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5622ab2b1bfc40072deb1873e7db51803a43bde777b666221faa0727652e1f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZPJ32348281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279be8dfe11c59836ee969e961715130efd2ff148f05573f012848b22db377a6. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZPJ32348283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30453ccf393f7b92b94a751e370f0b7736f166958e424508cad84c33d0431bb8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZPJ32348285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9d318dc68b13d96f5bb06abce78437058b93b2da45385d4b893be59186fd3a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPJ32348286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbeab49672e005d7b60bc2921efd97ea49ed936fe901d6424ac70b57b85e1db. 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/QZPJ32348288.
¿Quién es esa Bellísima Niña? - (Piano Para Dormir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70627b90c692e35185693172e3989c79fb304d27ead74fad726182d90c4b7222. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZPJ32348290.
Salve Reina de los Cielos - (Piano Para Dormir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecf8b34585ca0d99bf4a53ae8bd2b7053a39a52d1a0e6f3ca071019c189e5b1. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZPJ32348291.
Madre Eres Ternura - (Piano Para Dormir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da48b808b1f66b1da083c37a1af37435fa30f6467cc97e256b0457dfc5acc80. 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/QZPJ32348293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7054ea53158492cf2eb1beefd3b0d9b6f3910898fe5b3df872331b2e82e43b. 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/QZPJ32348294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1760b7c535eedaf5d087cd5a975f9468414210b0db2333d58277a42f9487acbc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZPJ32351064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf3a8415d6fb4c549b996bcb741f5393ad26378f2888af40fcc583d14a66e18. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZPJ32351065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a083bf98a60f88a62fcae0aa3c7433a9ae9001c47d8bd77a949a2ff61244b26. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZPJ32351066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68942cc124cdee46afd6424e70f349f49dc4f658a229fd7a4f3fc17238f176f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZPJ32351067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d028604691c75fd3d56b30efe8c3ca34790b741b19f2e0508cef92a5e5ffc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZPJ32351068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0659d9f882a884b9a676306be4865740451429fa69aa100fd3d9693850019f. 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/QZPJ32351069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2bccd20a885ae179b6ddce2ce2f4f856034d56f878a5c0ce532f5fcd3bf62a. 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/QZPJ32351070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e03fa1d26b7463d3659bc6bd8e834e40de2075d767e11fc213cb682468e372f. 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/QZPJ32351071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac2b578660e0cf61f41822670c704fd38f65b4176ebe85641b2710e57a61ed. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZPJ32351073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a947d56fe9c6476ad7180705ea7e695ea01dcb3ed849f4b69309ae5bf17cdc. 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/QZPJ32351074.
Hoy Vengo a Decirte Gracias - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90ab2bf5105c8c6a669cb69c35e07fe12a2bdeba07d6b3b3a63bd2c8074ae7b. 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/QZPJ32351075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b3a0bfda3b69220648c1461c717f25e5f2e6634c6240c563f20158fc6d380b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZPJ32351076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda675da632332da8850d8ab77d0d049095d3665b258b23606403dde6c04f3a9. 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/QZPJ32351077.
El Pan que Compartimos - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cca6662dc229345d3620201e3fd3de0850177272f2bea692ca91e2a7f4476f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPJ32351080.
Para Los Que Tienen Hambre - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35304a9341ca22eab95812674e90dce0f4e72801141aa989b71fa4b03fc803c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZPJ32351082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84e6fd1855e5fceb4e74a323f2f41f009faae8144301558034398c005cd8553. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZPJ32351083.
Tu eres Sacerdote para Siempre - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa13ea2efbce877dcf1ec999b8eff27107b10a5661d3d084e6e16656b062f0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZPJ32351084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5486d2f728fff0b7e8b3a20adf42b8cb3d87f344fd1b9d102641bca02e10e31f. 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/QZPJ32351086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687af266bacb39586079c4eef2ee2f09d56d25193114a5eec957a9aef7e28836. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPJ32351089.
Venimos hoy a tu Altar - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d389c813ccc21b31e695a3111eb7c159f2342e5a07326d0ab352e463f8f25c. 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/QZPJ32351090.
Señor Ten Piedad Melódico - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674aaa333c416677e617150e2664bff7c06f92121f8132402872e07d0d6b94a8. 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/QZPJ32351092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f202acaf1cea10a665045010bfd05ef0a7b93afe4b7f0d5bde47382570bf54e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZPJ32351093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982ce9f3c99034eebbf85155f2234fe0469b9414f3ebf01ba9cd5c8cdc799ff1. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZPJ32351094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea3c6186daaee9758da70110ce78fad8328e37beb8eb59172fea85da28cf5fe. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZPJ32351108.
Cantemos al Amor de los Amores - Piano Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadddff211611e518bdc47b810e876c829a91db93f2eef2d247167aba44ed4f70. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZPJ32351109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f8632cd8e8a25ffa850662903fc7f45496cafab3207e95942b810d442e94a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZPJ32351110.