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 0xfde05bb5f69851bd19ff2e419d02a31a2e8e721614e918ca3b4a43e14ed5c34f. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be3874ea-e556-4fca-8a0f-4721f2cd4f58.json and https://artists.proofprofile.net/proofs/artist/be3874ea-e556-4fca-8a0f-4721f2cd4f58.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 0x69430970e5a195bd23ae3b5a377dad0efd5a0781e10925163a8e9b3afc755e15. 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/DEY472378883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1cc3ea73b0dd6cfe95afddb5f51fd7c020a699a4ef5984c8efcbf207b2a96c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEY472378884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0199c1cf44043b4e011f2d75926a488f0cc99b5c1483835c2d58c48025ef93. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEY472378885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e9b02ff9093c4878a10279e06cde793eaf318a6deac8f2213f35232cdca6f6. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEY472378886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa094cf00f2277ebd1665653cdfb84412e41116d8bb86e2a6dd30de51bdb38524. 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/DEY472378887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87682b5bb13606f62a7ef3e91f0351857c556055f24be782d602d8b2597740e3. 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/DEY472378889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c0f46fb61538c42fee5c000fdde284e4cc6892c959e991b612f6b709bad0b7. 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/DEY472378892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199bba653cb18b5fb9173116cf9d7744eb9df7fb81b9bed78de2db83d6a38709. 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/DEY472378896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e77a2fb87db573072aeea83486b72db2754bb240ddcf6764e0520761f8efb4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEY472378897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfa0662e08341b48a9f35bfa52f87d2c635ea4feb3937d01d001015e078c7b1. 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/DEY472378898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcbb82cfd7baaecf3c974a3955c0f529a5375cc823ce37685bf4652b52b2303. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEY472378899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de36b972bbaa7e3d84a7579764aa84e81146f89f45013d605adaabff1a76692. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR9W12220142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528313078dba4ebd0ac9c864bb4b920d94daa5094617f196cf2bbb500427eec. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR9W12220147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf9441cf57aa8b7c98c0796ce09088d5346ad1321eb2e81e68d8be0eceea32. 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/DEH742230052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4345958c089b71da8177c5f761c1a59a1617b33530ddb602880d831dbae18e4c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NL1MS2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3211e5e99154a9d6906d47278a76ef311d6a324b92c439fa52aaf61f9abaffbc. 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/QZ5FN2240310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aeb10954feb9877a1995e3ffb99dd12ce990e099f5fe0eccbe5d532a776db6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ5FN2238668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb289d8f727205e6585c74c40add7ef2c076a38b6f87518bea1086e23cae49060. 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/QZ5FN2240331.
Mazinga Zeman - Future Island 'Spiral' Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717450b575aab216ce64db2cc6c772b4d3a952022c93efc75319bb347d89d53f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBKQU2497548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d6c861f4c3ea10c69e8a49a7f50aa989b7e9504055497cc974c0fe984dc6a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEG932404179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4684bd0c1b6d74557188928e3848752f5b501aca4cbdbace6392849f7e530d57. 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/GBKQU2448696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f16879d558dde77885d7849b6e400d98eeb907694f2ff8284a44a5a36d9125. 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/GBKQU2303573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76320e28d1124ffe650ab6bbfb4569250a9570d261aa4eaf7165ac1b6494124. 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/FR9W12034818.
Feines Tier Zoo Vol 3. Remix Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea616b3bb1195dec761985c9d2987b2d78551c8578d76ded02dc5753bfce92f. 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/US83Z2143738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dabfdb8569ecb7d23981ff014b9bdaea18edd0d47258ae68a138c58d38dec66. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US83Z2143741.