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 0xea3aed7c65300182572a4f1e0d1a7aff517b8946257fac087c729816fb7a7cf0. 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/4c9e9c02-4783-47ec-b4d2-e5ffccb4668b.json and https://artists.proofprofile.net/proofs/artist/4c9e9c02-4783-47ec-b4d2-e5ffccb4668b.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 0xbf2ef3cffe118e478310811532a6455ea34f4961ac32cc3d80cd15b6bbcf3844. 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/TCADD1719308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a90394d55878cbe158cb2fb3737af2a3f555f13d44799080e8b9e30e33a7a. 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/TCADD1719312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9650955f9867f5fa9a198117999b178b5637e9da24ecd1ce332f5dab0170b258. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:01Z), 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/TCADD1719313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ebc3ebc1095264bcfd46b7b9cb745e02fd8bce6f166a44fd564af2bf00eac. 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/TCADD1719315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051ac8e9d644ad5baf8030d0e7c31ffd92ca928ca1ee10ae33c734fdb585e36. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCADD1719317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd47a282fe7900d10f1e84d53efd2beae63fdeb871c6f3ab040ac3892520922. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:33Z), 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/TCADD1719332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d410f451a14d0965109845292a50d211222a41cd0c3241057e383d286475e45. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCADD1719337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f2921d02485548791afa1b5aac488af1804114fa1782bba087aeee6179e328. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADP1866854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7951b6834ec209549c2ce824bf94c4f97023b1b34a8108e4636f0ebcfdb36c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCADY1838234.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391a4c3dda93250739cb57def6309d1bd5c50a451b22ea1e557321841c3d0084. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAFM2116820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831ead7586f6caaec2ff67da9a82716f36172c15d135915bfac09435b1929db0. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFYX2337931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9322b7430e6f59e5ab1e5f14abae67156560a9cce506908d5e5e4ea3698f08b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZES62391387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb20e978cf1ec500432bbb2c0c226e92b4e0628d6ea898858029754d8ed4a58e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZRP42336855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ce2e5a9e14d59b4b2e27a46bff0e986de5d72fb66b971197f52fc654b5269. 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/QZRP42336857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef849b17bd18c22c3b3fd4023a616229147203f329032a2f5b1acc54868462a. 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/QZRP42336861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541aa20d6e54e77f0d5767a0b22f2fc6dad0c188967cea0b98eb4071317a23ab. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZRP42336863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288058632f57d470bb1fc498a24e03f15a54dbfcc1b660e85bc040cd215c31d6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZRP42336864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21090eae83daf25bc19ac1d6eee82a79681b878674770db2d81f590d30d380d6. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:10:41Z), 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/QZRP42336865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf23caf99359e5c099596ea4435dd609452568d0cc949dac013b363b75c265f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP42336866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad6ac1c74da5b4fc158d201bbb95a0ff26e97cdc2cff006f5a119138ec6ced2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:38Z), 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/QZRP42336867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fa4e52cbd02cb6335f52b5310f2ee5d942db96f088af316f9a9df0b2e60485. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:58Z), 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/QZRP42336870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35daf8e46d8f43e0bce0ad44253c4661c459fcdabcc52c34b7dbeaee95bdc9b1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:13Z), 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/QT3F22498749.