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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 0x44b1b8f01843f89611b5037eb05b79e1a170678091d5d447d7f60235822f3b08. 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/62e8048c-4ebc-4d4c-bbe5-7ecf06383113.json and https://artists.proofprofile.net/proofs/artist/62e8048c-4ebc-4d4c-bbe5-7ecf06383113.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 0x6676df91b60fcef20027c86c38575e74c107ed09b2c49e790b05fc0e78d1fbe2. 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/ITS781601749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6dddd9bc3e3d2033979270018deaea0ed94c84cb1f00600769e7380057a526. 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/ITS781900297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e7fcf105f99c94ab539a2563277f37ffb773ef9862ef3815f41aa95ae44375. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ITS781900299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402d5e1704afd927ffdbafefa5da4c87ac6f5e9f1b77388d6a16330297c5665b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ITS781900300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68894c384d8ab5e43a01c0a25a09ed303501557c3391284c66864060e7d41d46. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ITS781900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db470dc683e6b13d13f28136555bc68fc540fadc775b0e668a92804b4b281f3. 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/ITS782000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb269ddf9c5674180c081fa072ba8a3d7e82e617da314754ff52c8b107c7bb1ea. 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/ITS781800611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10f77637842f3e2b7770021abe5fa2b16a418bf32bd3524429372a06eb9fd1b. 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/ITS781800257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5acf0e19267f0539153123a69ff270a4dc025bbee0d5f8e2311dbc65ecc9be. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ITS782100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93147719b7f3541cb49a1184ee6dca1d12eded1af7902df76575f8d21a32b7a. 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/ITS782401052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd7bb85713b2e53e7b3a73d7bec93fcf16dd236943b7a9aa18cad8b0a14a4af. 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/ITS782401283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34408be99929312d5202e21f1b9eb77b64bfa57c996cdf667b81f5acc924014. 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/ITS782401507.
Soft Piano Music (piano music ideal for relax, sleep, deep focus, intense studying, calm atmospheric, soundtrack for study, acoustic, perfect concentration, focus now)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41af9ef5c03ba2895a8df9840b8f3f70c408669ca0aef491911d4edc0735eb8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITS781601089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb269ddf9c5674180c081fa072ba8a3d7e82e617da314754ff52c8b107c7bb1ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITS781800611.
Música RELAJANTE (La Mejor Musica Instrumental Relajante para DORMIR y SOÑAR en POSITIVO,LIBERAR MENTE de PENSAMIENTOS NEGATIVOS, La musica clásica de piano para relajar aporta infinidad de b
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307852a42cce97469346ea73250f03cf76d2070bd6694e54d14cfbc238bbf68a. 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/ITS781601473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8da4b5edaa7add256f0ba13e63e0d759aaa009d108537e31aa828649f1dafd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITS781601477.
Sleep Peacefully Vol.2 : Contemporary Piano for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e7fcf105f99c94ab539a2563277f37ffb773ef9862ef3815f41aa95ae44375. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITS781900299.
Sleep Peacefully : Contemporary Piano for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919cb9d8353bd4cb07ff882dc6dd3b6d668da1a256d897a0110b735956c813fe. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITS781800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa975144d55f8b036f577d5c23cdc90bb3fbc51a63c31d05297796c28b5341ec. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITS781800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5acf0e19267f0539153123a69ff270a4dc025bbee0d5f8e2311dbc65ecc9be. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ITS782100015.
Unique Vol.2 : Piano Expression (piano mood, peaceful piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdd4681781eac7967e3b68d593544ea5ceff1b421aa18c9abf5b62eb08a8d12. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITS781701613.