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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1781bdf446f547319c6b946bb6c2d273412a44a76ec7973a467fcdadc4601e8f. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a59de0a-c40d-406e-9c98-e4d34ac4928f.json and https://artists.proofprofile.net/proofs/artist/4a59de0a-c40d-406e-9c98-e4d34ac4928f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee9514e550d69d185d5ee0869208ca6f5067830a3c2740ee1ca34fe8d8d470c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1704700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0655a1951594be364d8ab173a240b0cdf408f5e072b5f230c227e65c961c4c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLF711400985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d95488974d492406ad52ffc5b1f56da188c3aef5976cd21889c29c33e6921. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF711400987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c308039d2f1f9430ad4888baeeae59986b0f03ae8b8262201dcef4a9489e3ee. 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/NLF711400976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e4b7ee066cb442768295f00f5feb8bf6eb7d48cb3067d3a3cacba1fcba1a0e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/TCADP1862468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1563994ee8885ed117cebf17b2483e884fa5c7131bf247ef335f694fda510d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBSMU4506148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd15193d25bf337ed5200675a9521a6d159488fc07e42b49ad3cb850443d1bc. 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/GBSMU4379422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fba7343f56356c980295f476e6aa84a4f208f89cb355f25ac51554e5af6651. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACO1669719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157285e5eb12faa604cbc487fb7b754e3afc9f966eae8327e9697f3373483903. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBSMU2137494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa445cbb84077fb33909ee2f328bad06a3e1b874457ab7a2de6ba347034fd951. 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/NLZ541600381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf97d4a5d8e11ddb00bf317c7c32101e8afdc46473ab0993d171d8bbd42cd2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ541600384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0aaa9451e509b853d80ba75674a703bf87bad1d8efb91f45ac11af65da03c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLZ541600385.
Wildcard - it's different & Kivnon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89adc9c3beb5583cef08ef4f6fd8934c6753f0b860b11736afe5a6d5c1a21d35. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1702439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f3346c27902be8619cba5a1aeaa37957153966f182adfc424b86544bd5a785. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S1702440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c086c68f86f333da3ec0a5655040028a55840afaa8649a7b39ccbd7f684fa4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1702441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ee33f73bd49962b77c7d8c51bb60ce7136ab5c50eb3de61a8058b341345bef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM24S1702444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00dde9f67b14db0a6082fdcd5a6df018abc316db900268046dbffcd9e8af389. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1702445.
Comfortable (feat. Natalie Major) [Remixes, Vol. 2]
Comfortable (feat. Natalie Major) - Ruhde Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0cab508b7f833c0ca4ee1e392c80c497bf84c45af29ea54dcf613d9ae0c2d7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU4960103.
Comfortable (feat. Natalie Major) - Kharmelo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eae858068c975a071a0c71aaea689ecf535a08b032d5d595e33d91a8736ede5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU4960106.
Comfortable (feat. Natalie Major) - Herrin & Nathan Ueda Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa469db4f645b2658757a4a1b412faba976b3b07944df6d97b554ee684e87973. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU4960107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d5bddd88ade880e737fec88112a1178aadeb1115dfececd4b9f36b4858dadd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHAD1300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe402c1b86dc449af43b3774fdc864aaf6ed29ae261c60796c6d04c8fef34696b. 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/NLQ881301124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ab11609ef780d1ef435db6da758cb922b04619687125d73aa1787c2f401087. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN061302845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab02a910403a607365779e1ea4b81ea73f6ef4d587c916049419fc967a1a2ce. 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/GBRDU1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ad1cabeece8b52c7baa96b26541eb6a24a8465cae720bbb5974c10dd20b9a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLZ541300027.
Rock Your Body Rock - Dimitri Vegas & Like Mike Mainstage Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241a246df3f9b21a1c37c7942a453895e0d10f917d827ea680a27d65c11a236. 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/NLQ881301095.
Ferry Corsten presents Corsten’s Countdown May 2013
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996ad56966bf72fe1c1b88961ac6b5ba22f96eb4223adf211d2c53b03b4df759. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1373566.