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 0x25039f5ca60b620ec082ed2d2258bc3063f9758d6bf972a873a42ad6806b2a06. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd3f26de-9121-4ccb-b1ef-4824d787227f.json and https://artists.proofprofile.net/proofs/artist/dd3f26de-9121-4ccb-b1ef-4824d787227f.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 0xa88fae3cda0d3a997eb831571b6338895c56929d66757e9aa97349f386e9622c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:45:34Z), 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/TCAFU2112933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb96cb41d22b0555d06c4a5678211a8b417e4b609cf7de8bb12e98f99d23bf75. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAFX2107512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2da66a7bf4ab1d0bc95abce2bb36007a781b4b652fc7a4ebfc5490ed0403c90. 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/TCAGC2266203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d31283bbcef93a27f63a588a8a41ebb83750a714a50d5db71c0bca3b4cb763. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAGD2290230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94537515ce81a1c2801f4a810b8bdca8432790ab818ccc32147bcfa91e7887f7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:39Z), 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/TCAGD2295760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0d74ae3982208017385799637102849abaa6a80d3c7c3f2c4bdefd5cf1d10d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAGD2296767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91ee36b716a2b0d8baebbf1e820b988d4ee173a8609ff0f7f4aa150976973b5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAGM2203795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca63bb513fd4d97269db743afab69d393cc5198fd32c32c08ae4f7a3929b13. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGO2249576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd960723f1d02f1876b8c814eb3cf16d2a1ec2ff4b5056191c8b9e01aec2bc2. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:47Z), 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/TCAGP2278424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f08741bd155d3276c9e251b2ae8375ca6214929bca52b38ae7b01c1785fcd3. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:53Z), 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/TCAGP2278444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9f0be2e4a338258970e6247d3b647e7827b52b1d65caa29ac1eed3ebe5953c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:58:54Z), 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/TCAGP2278472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3778d7de638f35c6c981a9ead2bab1e6be31d3a8e00a41f3e3f1af42b2c4389f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:17Z), 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/TCAGP2278478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ce17ce4b34a8812a5c26f62794f51b8ad1beabd9bb60d78e590cdd5c918e8. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAGQ2255297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91081b91dd3d9129dafa6f257c4502d7653b339c87c4f3163b36cf242754203f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:08:31Z), 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/TCAGQ2286385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa423dffeaf9a2c9315913f045fe7658ddc5767dffd9c7b9233561e88e07667b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHH2313255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940de2af89142ddb223c4abc651fc47edc5d207e5fc17409b805febb9bf0377. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAHH2313573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3b92a8d2d3e5f6b380f6007e17d3bfd8b6bb5fb6c7a217b40d6ca204396f7a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/TCAHH2313609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c391b47fb245265a8d1a1e3aaa1999975c7cdb53feaf8e708ccf507a47685f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:04Z), 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/TCAHH2313820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8182eef68cfa10037c58d910fef49eba96b8711ab21d59ab1354f400eabcdbec. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAHH2313879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d51a89fb3ac30f1c323a4fd294f5de12e7438336212127c803fea4668d2e1c7. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAHL2340447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb283f506c3d52b42306d50aea572b311380267b07980c2ab77a9f3c2fb58780a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAHM2376896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd407ee5685e009574c293cd42deba3de52b0711d5e0617f96a34a3265267f78e. 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/TCAHM2376917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601244febdd0106400fa9baaa60e2c7aa2a95bd5e6cea05a0b66ff660c965917. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:51:51Z), 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/TCAHM2378258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe06d863a9aefa5fef4c5e58b5ebed005616898657f474c139e2f232efae4965. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIP2416160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b4e3a59114a24b9129694cf21543c694fa1aac8e03fed2136544d0b3290fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIP2416162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d14bc023258efb08276f1c7deb0e904582d8069ae717bf525cd03327656c76b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAIO2443035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1536cbf77abff4741119d10622a81cc0d94fc42729331afaa32ccfc4df4622fc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIO2444143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73f86d9b32335f6e173a3828b655608659162d8079c9d41a004540d1184b34. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:13Z), 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/TCAIQ2407233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83dc00931da14f1927f31c12d65549ccd2a939b0d8882b51464ba2afbe1dcf4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAIX2472619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f36140e41b06ccaf2f095164b936bdafcee9dc0538128bb49069709d65eb649. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/TCAIX2472624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e90a83e5d63bdbf90457c42f8562755ed57564b06ec59667333175aa726466d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAJF2537275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f1a33bd597e186b870e3419b2cf321166aac3a4194a5ad5a1807729fb3169a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:58Z), 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/TCAJF2537278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7e364054a10faf7d03a2f1085074ce3da897c6338292fbd9b286bd214d64a6. 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/TCAJN2511113.