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 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 0x2c65d85d1de814722f599ebc5b30013677edafc87311f107b1be2dc80cdd42b9. 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/1c514d00-92bb-4528-8e5b-18c94191e5f6.json and https://artists.proofprofile.net/proofs/artist/1c514d00-92bb-4528-8e5b-18c94191e5f6.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 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 0x041559ed5cda579348ab8eb6925189c5a648c7b415048432bd36e68f3156d716. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZTAY2363117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a2d0ee67b0e985ee7dd2c83f06d7fb121e5eccfe2cbe75d6dc95fdd6b916ae. 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/NL9KQ2390139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b4f366f5cb497013f81a4de96627159e0dcf6cabe87070acd8785d0dae52b4. 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/NL9KQ2390233.
Please Don't Go, Go (Amero & Hallasen Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96b00f0a82b6fdc8c0fc6ba4619340506dba7a274b60b7380fc17f1b4f58792. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GX8LD2412961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6468f1d0d138ef7e8482516dd9e0b0a904202596a70d96df89833c28e17acd06. 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/NL9KQ2390320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffb06427ee6bb853b424bcf704a0b2f80aa15aa0dc026238c04b57393c5d10b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CA5KR1945167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323e628c5d243a7fd280db45e1c59de6359c9905a67ecfddb26767b3a03a8f0f. 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/USA2P2042354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc40df3dd5dfc1b9876e7c7fb9d8ae902572680c7a0f365047844d287abba55. 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/DGA0H2359676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b2f24a142938b35256eab166c089645aa579144610e1f47bda5215ac124ab. 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/QZNWX2352374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e677ed851bdaafc0385d7575e00f5fa3f0d0efaa3a2c81fe447e57e2c51841. 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/QZTAU2220361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0946690b73657746abaf4de576d1ba979b0e3f74da2febb71b256c95f91c707. 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/QZFZ62343763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52e00d92eadb2e74683fd3c0f6d6f2ab591a1e7b29292576457cd21b5d75e7b. 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/CA5KR1963940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8b95a5f1e853aa0b501147fbe458b79afb789f00de55beb6e3dcb8eae6107. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZWFK2316117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae909d01f61213b20048fdeb95e43d647d9db2e27d5d99d440af9b8d6a336a5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZK6P2303202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a695feff9109f11332a15cea0eda85257eb5a7eca15066e09e04658460baef. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CA5KR1969767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c282f880f20ff39045b331b0de2a61be029f4fbe20e1e399a336a667b5a913. 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/CA5KR1976337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4dd919d1819cebe11561912e873f729ef763028fa02401cf579b371fd54c91. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR1969706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8711321856d94b550cc5f5d335ba0502182748799a936675a4f8606b4f7d1ea6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN32320014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c49a22d4713a8686305ec15c77ff8671150b734746ab4b15db192932e37e1a. 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/NL9KQ2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c7b42c2f0c2b1cb5724858e8c54a9e9b13746c16bb104a3d78fcb5880e83fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX8LD2319481.