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 0x82c9f5f4cad391164c1d31ec67d878d4a735feca4f83a2c8761d141318755d53. 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/5187da5e-eee4-4dc6-a2cc-039d51e6e938.json and https://artists.proofprofile.net/proofs/artist/5187da5e-eee4-4dc6-a2cc-039d51e6e938.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 0x20b514916de6e1a887df5d7ec14125bb03c1fe4147565a694bf753eb213e16a3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:11:03Z), 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/TCAJF2542893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953c55fe2ee515c18ed023ebccfe1a72b9bdc2a861f9a859a907237620d21241. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJF2542904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fc37dd5c237027b25e55d45bd59cb2a4673240dce25d9bf19dd78d2f58faee. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJF2542910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8334d72d7708ccb3226fa7738c194ab93779a4b584986a3bdfc812078f2b69a3. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:46Z), 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/TCAJF2542919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb0f16d1168b4e1caf9e5353745d083b3e4dbbc0fab535c56849e74e04c9a7d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJF2542927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d6e0ff7f10075c78d9a1d7223dece97e54800ad94b3ab40fd1a7a3fbe71cc0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:51Z), 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/TCAJF2542932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939910b1cc73d7efccb4da7c9ae051ff2b39528a828ca1dc06a46f43b6257ec8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAJF2542940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3598d34dd5b08611c19fee1641f209b95a1a67de89b56a72d558c402dc10fbb5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJF2542948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8823df636140f8afc11b612b84433afc8151dd047f7b44f5d22530ce5f6898. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJG2542950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdfcd9c3a7156f416f0d3e4c2cd48ee591ed626b7c442a9ee563e8712a46f8e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJF2542957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef27c74add5bc4d8c198105ed38b488d9ff53654f0127be3193a5e549372cb1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:24:06Z), 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/TCAJF2542965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1722656c1ff8464115d0eb884e1f970c64749e57eac991a535ec72b400d311. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:01Z), 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/TCAJF2542971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96f8e1e70db39b1a4977758f02104097eca873a59330efe4c19ab4029daed9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAJF2542980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540fa3424e9280894f86093c367846f82759d844d4b956847a976014c3e330ca. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJH2530362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cc4aa4dc413a0a9b1fa4582d06c4edd0bf9d3b0354af73c8f8a8bb6e17fa1d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJH2530392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3583121d89d5a9f2da6ded70f624ca7734853b4f8bac4da3ca0a7fed2e536e. 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/TCAJH2530409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ad178fbeaca6d098743b0efc7353bf0018d8c549031195f891123edafc648d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJH2530422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd94010eb4246a2f4edeef600efed4634fda80827078ae0ef5c7ccbfbfa2524. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAJH2530430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fca2cc3edd7740737f43bcac11873d95d647ae42e0b899c487a85fb304688d. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCAJH2530458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12debbc626505dbd6d4067ef35d85f27ed0511eb8cd1f01a8452551b0923ff5b. 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/TCAJH2530467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a0509d9c3d520326f23a44f32394d42c32552494874942c99ed4944f2c3cf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJH2530502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e797bebbe3c234e03c586972d6dac37cd662742ec0f4aa5e3c2b3f76aff473. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJH2530514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4657bcc288faad574e0ffab007e106e6623c5f4230b0ca095ae6b6d403b95172. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJH2530523.