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 0xffc738e942e7156002bdbe29907d50f6dbaa85439f5207557d18a0568fccdc49. 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/9e01700a-77e9-4120-8830-c7a84aa7765c.json and https://artists.proofprofile.net/proofs/artist/9e01700a-77e9-4120-8830-c7a84aa7765c.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 0x34c033f969c6ba1f4d34b2805b253ded5599c92ffcb5f557a24d5e90f144c029. 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/DESV52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be2419b204202f0e9aeeabccd5113367ab73f08ac945d445aece6e76cd17c2f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105948f975758d49073d16d742eaa8477e126a69caa1aebdc18c07de4075019f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2313350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d36cc964bfa6c673775f13f0c4585d96a46d24e25d50da429fbdeee6fa8b87. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKG8V2301818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6347c8ca5a5571c89ac64b2c3dafd749b4d6572b29b7520dc12fd26fb41854. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2301817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d6296a438683ab7432aa27d8fd0e5968f240f1d9d1818cbafd5d791679612c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2300952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1eab46e610302b3dc6cd12905cb49ce567362cb2f70974cbb514205a1c7c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKG8V2203173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af905a712b6b179c0b41ca7067d3b49a5521474691cc068dbc5d877d2bd474. 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/DESV52200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9ad06b9406176a2d417f6e68ef2304d89a9bc0b723153f64e857af3504905b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKG8V2202521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607b5ad47bb0c03ec7907f1f0b26ee35a0488ab4e9f3766478c699a8393a8857. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2202374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c01b6215e2224833b4ab03d1e5fce731954e6cb5ba301284e8f5face87c3aae. 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/DESV52200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4320ebc0b4380423b3b8b9d467d797aa8dbf55bd27b4377dde4275f35ba57d75. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2201559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092f132ed6f4bee5f5d1ead7e3d215eec4926bd1a97c1246ce1240c98268bd95. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2201377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7de3e142d5fd32f3e1873f327c8ee6a258ba294e1b8ce620316796a05aa6bae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKG8V2200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12802aef3a119c1a7c2824ceab0dd3aae2a7c64bf76b11a5b96511ab46918366. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKG8V2200418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ad8fbcf3ca5253c30e8b288881fd19ac1c284a5e20d11056866717a03a0595. 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/DESV52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f9c62d84af72fab8a25c62f40fbd6c5a2b540a1bf087f8f73c4e818f231286. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7571228a8c2ee5adcae9a1ebf2278eeecbea0efcfcf1f20e5c5c1675a45a9d3b. 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/DESV52100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb196ee151d2d2fc21cf85ab42501d4d595b78c51d4eb0e2549a0fcb9ef01725d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2102785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8251c03710d22b54f94f792b4982733715f33f59e05f3c3c906efcee5bb8e35f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2102616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0e2c8673fb233d383e9ae9000781f0fa392d9d7b499e1f7accf3b573b11ac2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DESV52100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b18e9bffeecdaa045ea25d20965d6944f7f7b35b808655612794cfd72e8c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2101982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f941b5aff01dd07fd424cff43812621b527c50440dfdb5b7df1dbb6337863b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2101741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326efa6334b58926a02d0c0d7bd6d234b9dbc3351235b9c599d56fcdc230e8ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2101628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd55cdc4c1fca0f03e50eb8b9561441ddeab02115822c6ff5a8776b5dc955488. 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/UKG8V2101581.
Killing Me Softly With His Song (Piano Arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f0a34e6e3d89eb038c856d5f37a5f0fbe87cce0ca8707b47643a5f17d1868f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKG8V2100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82f91def7ae612a145f62458baa534537e56dd5648f0d7a724fb7ed93c9c4e. 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/UKG8V2100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa028a01f365aa8f27310d1a48523496b8b6523b885e2b5e67e0113765b6f6630. 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/DESV52100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15372528994e8431b70004b36ea6e1a22766d29e2ba6a79b7b3f23db4fc149. 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/DESV52100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4fcb612e7f373efeab373a687772683ee69f727147987be1e0023339928e4a. 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/DESV52100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd371f346849ef9e10d07db105c77947988069ec8f525960c31eabb9c187d1f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DESV52100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08af9fbd878e1e4ff1078176f754a480c385ac7ce07fab730160e99d3ca7abaf. 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/DESV52100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec832dbd2a36e57871fdf27d1fedb1d580aae66c611722cb279b5abac6f40a1. 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/DESV52100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de804cfd656d9eab553f95126fcb19ea2e0865bd1ca124f0b7f4032a672042c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DESV52100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13829abbb7446d297d65316c7e6ebc3d8f14cf1020956a9309831f7d3811430. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DESV52000006.
Sweet Dreams (Are Made of This) [Piano Arrangement]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2598b4f239b12565f8ba1883af2eff40dd278fe73a236ba4f357e8a7bd49845d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DESV52000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd783211ee779ae2ee2692c124010097ebbea3edc1313cd9b0ce25deef75cc6. 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/DESV52000004.
Boulevard Of Broken Dreams (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f8dc15665d09d3f798ea58401afa2ab28b639b9da69cf763aaf872eb4b5879. 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/DESV52000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88017677113b4cfb494f95270e09a7e9de5f4383893cbf256a15eaff7c6b0dd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DESV52000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373fb9e71fb88c96a0be34b7ddfeee96becc24c7005a0f238d6b5bcce0eca4da. 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/UKG8V2500123.