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 0xf421d3b30b712019dab975242309023008941672c009b8a03e9f9f04273998b5. 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/c628b840-0454-4038-b38a-fa5e9a649028.json and https://artists.proofprofile.net/proofs/artist/c628b840-0454-4038-b38a-fa5e9a649028.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 0xe05cc35611699b1d415829488e207a98141d39789f20e36527e185d4547ab95e. 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/FR10S2383606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7553ca31d517c18e5118a16f33c02f8912ef6fc6d3d12ea716ab6f110b141278. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FR10S2383607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b53bc723535f0fba2507d9f7f108a9c1dc15bd06643961ae318453677e30e5d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR10S2383608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acf305d6f7b1f3cb5d5f008b2ca244fe8748d85518f73d8bf5bf0d1298a7db4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR10S2383609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4e1ce2a782a8ad5daf81125aaa2c4ff8c8e36d4a35bf25b4fa552d7d9b0cc0. 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/FR10S2383610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52259de587ea3c481c314d2cba52a1fb98092d446c150148119781107ad44290. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR10S2383611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e0389c2690d0cc8e2f176a25e778a9c38ef5e98c36a0db844c5225de8db3bd. 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/FR10S2383612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605203c3289dbfb1488ce731d76bc28ae98f4941899c37779ff0e00bf468577d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR10S2383613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8b3583a6813439cc3ae8926dccf53b54740600aef683f588084ed430422137. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR10S2383614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4961762509a873c22fb393a596b2a989f8f9487ab4be60e8aeb982fb287f093c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR10S2383615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9649488420765431dd723d276cb470459eadcb3a916bd53d1712bf7a245d7d8e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR10S2383616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee50ca51275555a0e7274034d8819ac5d6359ec8aca1c03585707527ddafe5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR10S2383617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd377e1d4d2549e69171a2dfb0077053a6c8d969ad9e0347938b2ddcb258ea94f. 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/FR10S2383619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e5f35e12742aa22222cd424c3d3de7cc5da9b2db364bf0754effa068f80747. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR10S2383621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f650417164d4a9baf644a1d0da252d60239d456e7a1b3e3b158576caa8cb37. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/FR10S2383625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8720cb4f7932291f52ae65974aa6fc1b11602503a459571d380566bae8eedb3a. 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/FR10S2383628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19a500ed9731ae4f02ef8fc9f463d472a45216ac1797576a550e82fffbc91a7. 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/FR10S2383634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06a240d68bce71e4a2419ed30635b947254a971baac640ad1e0947d084db0a. 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/QZJDZ2103448.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376ebee6657a1899bf875f43ef49432bf0d06a0245f3f0f2a76ec2dc7728911. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QT2VB2426221.
Rain Sounds for Deep Relaxation And Stress Relief 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0143b9494fcde3f72b6d8918b6a6250b2962c0130f719627f42608050c72a053. 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/QT2VB2426235.
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