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 0x8e0b39edd253cb8199e2dfcbfc67b8071cf26d9e97ade2d38dc46149c1aa7c5d. 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/38a77999-d9de-424e-b725-9e461372789d.json and https://artists.proofprofile.net/proofs/artist/38a77999-d9de-424e-b725-9e461372789d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nao Voltarei a Ser Fiel - (Remastered 2003)
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 0xa32781a104afd7857db135e7784b53cb95d2573710db5b2fdadd9178d0965a10. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/PTBM10300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03da6bf9978f13c5ae78a608b250c8bf617f4704023dbed212c502f1f15202e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:08Z), 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/PTBM10300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ea226d57936b05ecfd4d7d847a47091bf8b96ced1f093e14ee0b922aeef5f0. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/PTVI11000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63454a2a10d34f31997d34f650822c5962b3b40ebd8d1360c1d811dc7059e1e6. 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/PTVI11000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2328a42affd76fecebc87f0fc187f81e2a047c26846b64eafdf45d54c7e001. 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/USA371498139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a169d820901ae9cd1b56b58572af3643ad3b76cea899110de96b8647768b1cb. 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/USA371498140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d54254d3372dd192f964f7558c77f39beaec223352ad19d1918d5ebf0a5c6f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA371498141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b3796ce45e4a37d1d9d201e6b024083fe6750b591c306222dc1f5acbe8d62. 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/USA371498148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe758cedf5652679058cb14ef03eae13b413fdbabeca30a1410932a2c5c6986. 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/USA371498153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93797d2234f5a536f42fa15cc740dfa7580182b42dd23a21521bebf20df0de2a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USA371498142.
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 0x5dc9d3cef5e030e264382e98d3701217613864dc707c1d102fdc6c5dd45a9ebf. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USA371498143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe24c8afb09eb34de4ae1b2b8a89ace78e6c97a2a9da3844dde6579f8f53225a. 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/USA371498144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e0c26040d3998d567c0a6cd6f82579b302e58eb1a6acbd948b29824854b900. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA371498145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00e07367c4e3775e85ffae78db7e65fae9048e14ff4978e75bfe3c77093951e. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USA371498146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af467cf210bd7611acfd51133aa700fc3141ebdb21f0caf07909d2c82aeb5a. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USA371498147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638100d3b9904ccca1ac587d4a8054e4bf5a35c55ce8f5cc3b3517cafddffe2. 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/USA371498149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aa8c267f4195ab2d5c944e49ba739660245c543b454b06798b97bebf041776. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USA371498150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50cc0529d245b378ed67b8f9bf7cf8c081b5d2c0d06326bfee98745e848283. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA371498151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6792ff2fd94908b5a69c5d2fe251d6e1e0ef0c632fecfb78c0e93e006a3039a3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA371498152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfbb61ef4842997d4d91d16664650beeacb133c77fe515ed225ddc9c666e586. 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/PTEM19300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e4cdf02b779a85aae39f0ea1c42d18f3bf2083b334d044147870e9f2cba1ec. 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/PTVI11000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e41caeb92857179527781301b921c3faf2d4fef6d0ba1d25544abdd52aca64. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QM4TX2166687.