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 0xbc2c2ab8208748802d1b243272b575aa7c68d2e3f345adb40f83974574b8e0ed. 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/c54ab77b-7861-4baf-994e-c2de13bb5651.json and https://artists.proofprofile.net/proofs/artist/c54ab77b-7861-4baf-994e-c2de13bb5651.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 0x8c94acc10636e8675863be378a918ea6a58921bd6ffecac3340b4bae582240a0. 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/QZHNA2533523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a47bf41378803308ce7e00d0f2a5fa836d8204c2d7fd83ec4fa08c7ee1bdc92. 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/QZES92565080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba093bc249c20b43d973ee8db3c9576e3c28b3e1e1d26ab45a25d1c4afa672a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA42540273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfd75f8306545e07693a4a192653f070be440c2b7df2fb5695e3e1553437c3b. 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/QZFYY2558890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1de7aa341cf21f7437e73e9c1079f214870eace3075153d502dd8c1a1744e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QT3EZ2489726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1e1b3d04395a93cdf85286de64c917b7623584f8f7f5498a97a7b11a321c7b. 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/QZZ7U2423229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b259cd9cbd30a8f0846fb3b7ddb3e7a7cdc500b0ea1d9559e012d6401aba8b3. 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/TCAIT2437275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cec6ccccf50d27528b698b8e6fe9865552525315bc8c9be441e171d517be9a. 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/TCAIT2462288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6e5310bce85537415643601e1619331c8311cdf6f6e610f214d1ea13772558. 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/TCAIN2436480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd13b7e0b9758f5ff8ca3f870d538aa818ae5b0507193c14d1758c8d6177c07. 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/TCAIM2427165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde773f3b89604d7c15a52a1f4291e5d7c321614f5d1619c00782151ee01da15a. 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/TCAIL2423164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808915fbaa0fa5ec026d548d158701c133067e877646995f45d4812e60a49992. 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/TCAIJ2416577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a90b654a1bfc0062f852eda71851ed30b33c8959841e0923b864d63765431c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAIG2489825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae3ace177337a13554bdcb3f7bad101ab98355c5a0de59bb8a8b72837fda782. 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/GXBDS2398853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe1074ea108a96974e4cb7ca1f86ee73876d39f23d4a48b0ae5186c009c63c. 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/GX5MX2306616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5eb8b9a91531531c5adae1807e9af73be0414796bcda2cbdac5ab377381ed0. 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/GX5MX2397658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c7cce0f1c09236f1dd49b97ca18e8ce0c38fcc7193b68d05661c0875da5caf. 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/TCAHI2352192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03533bf65eb19ad0aaabd0b2935e558ed4e09cb7139fe27204e91d75f89c4997. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHE2353615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c59d0ae28435fd64f353102b8ab18bb2e0ad3c618cb8b672393455734932ee7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHD2310959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8372f122d888c8d28e35eacf7647d19520ed58f087ff1cc546896f764e4a63e1. 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/TCAGZ2379327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3cf7860d0489a00f771b68fb666ae24af032275355be97057242988ea4e01. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAHQJ2345345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797ab72a05a5a75d27290e9b17f829da76cb589c8485de8681e98d1e20b7ffaa. 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/CAHQJ2331789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd280b87f574d0e5e2eee62464e5416b7ab647631542e1e94bbc91f7094086b. 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/QZNWT2502827.