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 0xb523926b419b7c3addafbb674ebdbd811f54981ad13782aee763525c36b60094. 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/6d5d17fe-9878-4902-928b-42b1ef2fb185.json and https://artists.proofprofile.net/proofs/artist/6d5d17fe-9878-4902-928b-42b1ef2fb185.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 0x011bf6e282053b804f789bf457bf15ae9b5939dd93a4227db7ccfcc79f0f9bc3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES35G1200469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b0bfcca270ffff16bad0e1cf64a17126c8ba1b2458fc8759cdb6ca91ff7dc5. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/DET751700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d04aecdbc9d394dcf1b571105a23a5fe6b47477d46af179355ba6fc0881650c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEU671800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ee5a8b8f8b30a150df27a564c83d7573b8da79a9e6ef20a52d657042ddf2cc. 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/DEU671800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf605bdf902e7c8c8b1d889d28a66c78c0225344149c88767baa75e0115bbe70. 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/DEEC32000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c2ea967ed11391a18fac2c236e7375b21703247b3d53236bd3dbd299c52d1f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBJX32005037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551de9f460a368e6fa9febc8655c8e1653cffdc98f5542f15d07d37722855edc. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEEC33500255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a708f4efdd7021ab5ada056055ab3ea5abbc85dea48ddc57546f7f7f3e920. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEEC33501125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21873ce6f9657168857c87fba660eba7593a808d03730c199e75614dc27c3d. 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/IL4612400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe388a8bab9295184cef3e0c28206f6e5c128f281b65e1814c7486d5095c8ee5f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:39:14Z), 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/IL4612400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2024338a1fef734c03cfa7ac11c812a404058cb3809bb2036141eead36bed887. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEDH72300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdea00fe63b061f533654b31581662ed88ada67a4b3904829dc8a284ec291864. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:14Z), 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/GB7NR2555215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99120be61d7ef8790bfe8952c96868536dfc6d970b88dcdfe1dd070536d6245. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:27:52Z), 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/QZ5FN2550334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e4945108b7ce96bcbc890744ae379c92552e54a22cab2e916a624dddb8d5bd. 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/QM6N22537275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab13a70577e18a29b4bdde2812192bf5637d2ca3b2ac209487fb6b59f8b2f779. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWDD2533347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba67cec6f1523142c6d3e1554e9195b9719ee50c5f7876f7a29ae658a0093c8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWV32590630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e4945108b7ce96bcbc890744ae379c92552e54a22cab2e916a624dddb8d5bd. 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/QM6N22537275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165511d6421c56faf9f3b5abbc0c8d2990b959c28df8b9845fd204fc690e4e97. 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/DEPX41800273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1477f11dae03ede7e6923f5e1ec93b8450d7228b06bd1240a796cb4808f87307. 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/DEEC31810349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700935791df266c1a3a29d31b55fd8e002fd91abb50e0d857d12cda051d87353. 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/DEEC31810345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700935791df266c1a3a29d31b55fd8e002fd91abb50e0d857d12cda051d87353. 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/DEEC31810345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2555bc8dbad0758e9181882fa933bc4e7067be27f51acc47e0c6434eb3440b. 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/DEM091600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ee5a8b8f8b30a150df27a564c83d7573b8da79a9e6ef20a52d657042ddf2cc. 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/DEU671800039.
Global Underground: Afterhours 9 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3de699e0e06a77b9ba0f3f830a0d8aa2a01707c301eaa7a2bcee47b94ff1f24. 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/GBHFW2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9b3cd8589a1165326bbe06333fd6173e8c07effeabdd6a93f960d6329fc7b9. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QM4TX2489358.