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 0xf3ff53b6bda257183e0a367ed3fd6f74cd56e00386bedd3ac69f5f9269e3c3e6. 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/7e02d10a-5760-427a-a226-1c468b130ad1.json and https://artists.proofprofile.net/proofs/artist/7e02d10a-5760-427a-a226-1c468b130ad1.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 0x4878a5383ce3dd5fa1210a70ba31112507fe0d8f33597d50fb7d0d3b18999f62. 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/DEF911500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba66339da534ab33c0940bdbe47d4767ed78fdb1b52813e1afef65ece0d59e. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DETO31600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d271f241b151d6949f35e50c62de810d9169842679e09415e44c436856c1488. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEF911700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637afd7d5127d145c4e7e00795a4777cbf3f3a6e3253dde6e3fd225a27a7ef62. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEF911700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4feb5390175feed7a6f0301385ec50ffddcc8815320619986108014ea7258cf. 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/DEXA41800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe696143eb64d4c8be103bd360e585d8da5971832cf552aa3f9f02fbc8c3ac44d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FR96X2019515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828a07daaa937da1b48c6a428f58f68384d1016cfadc1a66e647928f695b628. 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/FRX282055034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5270bf894027f43447995069b590d4d38a49073a5c403ef2400fccf98e962. 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/FR26V2030666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea96f79d52a2411d2441635d639ebfdee9eb100e781b9cb064704b4db593c7e. 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/FR26V2030667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547ecfd324a8f065a4992edb5458c80669cc6cc742b38739e7d5578506ec511e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FR96X2121532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52215e7d9b39204a0e3d0cb2e5a9168d35d4c5b5aedc90fd9f067590e0ae440c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX452102791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354afb2fb92440aa95924e0a6e8db056210bd00680ff50e7c4561c0a7731e6a7. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FRX452176555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e5ae2e4d73d6f0fe42636f6b8d7f130b22992f673d1b894b949d703570d2de. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRX872179577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7166fead812ff00c714c30933f0e450a1cbbfd31d0cd1c1497e9b9c39cbe9d3a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FR59R2201609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe11cac4bc6b195b10e840be06248e7009bfe9936398dd1dfb6e40c97f69f910. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR59R2241337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565c85555fef28bea57aa24f729b83c74b8b7f4fe2afa74d87c16a3a72550284. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FRX282248068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a285d8a41b70d5393abace205965de4173b6202ac82a597fe3a9923658e230. 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/DEPI82311367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a33c70f6ac153605631dd61537980f64b659f5bb5a5c28e30d236501a3ecc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEPI82314329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2ea87afbdcc178aecb08a249bc9b17819252b99b63e733c5eb255ed6876bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEPI82326771.
Bin ich verrückt oder die andern? (FABE BROWN Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1d7b5c447744424249318c84fbef88d93cb2d67bf013b23ed7bd60ee59474. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEPI82412569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf357c5335279f9f7c3edbb612f03bc76659f55183b3c162d4211daa7951f4cb5. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/DEPI82505047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef6d3bc1d8f6d36de1a24d70c533bc86695f52cef09ba93e8fe8927862e90e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEPI82306448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2ea87afbdcc178aecb08a249bc9b17819252b99b63e733c5eb255ed6876bd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82326771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4517f73927b9f1e2f549b87bef8ab7b00f640b633623e9412b225fe594b12e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82457710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a285d8a41b70d5393abace205965de4173b6202ac82a597fe3a9923658e230. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82311367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a33c70f6ac153605631dd61537980f64b659f5bb5a5c28e30d236501a3ecc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82314329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1d7b5c447744424249318c84fbef88d93cb2d67bf013b23ed7bd60ee59474. 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/DEPI82412569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea6ece364be5239b6e1a0b5ebfd5350542b4313776c438e2a5c0a237c00c0c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82432597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc71b2333eca0f7f421f4e74d709cef9c024247e992c050abe13b68360cd748. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEYT72200295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9442e6394088ad6343598494c1a1a9c48dad28c0ac6c68692daaa25ead62f8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEYT72200268.