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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 0x59c5b84f981e3dca1a3cf95137eef5f3982b767f3e1104b187283971c4918ea2. 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/d168eeb4-65e8-4d99-9675-a4b79a5769fd.json and https://artists.proofprofile.net/proofs/artist/d168eeb4-65e8-4d99-9675-a4b79a5769fd.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 0x850934248c104eee9254fedf005741a535d92007bbfb32ab6b4314519341d385. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:02Z), 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/USEE10900543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5807f92a9507a1502c7c44a7e23ea16f4b0740c25a6d3604be7a2e0d42ba7d. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/USEE10901043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf9141fb682bafb4c30fc6ca750d4b0a66c470f4b884d79fc078b8a420ce8a2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:05Z), 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/USEE10901048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5b4487287d53f0e9c99659aa7585e8c8f8298a110de686a445530177f24916. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USEE10901049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc222fa931e2897a63b7f3502a43f5c82dad2a5977046cbfdb4a88d0759167fb2. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USEE10901051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a479c0a05c37cce3f7b89054bc7397a00bcd783df6cbdd94824375f0b2dde. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USEE10901053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6396b865dbdf9de0d7e479c16f95933d05e5a1b18cd202cfa9a65728f355b1c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USEE10901054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7928416ff0494afcabda8e1479a3e78860999c4b6c8a9c1c6e6e019b774b85b. 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/USEE10182076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c90e1d92b2ceb9001ff44d044d02a88e46197af7936f999d394e4826a59ccb. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USEE10100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb607d70c60ff4a35fd8fb9ec4369150122a2f6aa8a06b8fabd0bd478fd8cf5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USEE10182090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16c7dd1a895e5cd6f6d5a825188b05caef936736fa3890845ea849129e37f23. 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/USEE19800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab41edb76cb036d067b06137488913769e1528ee34dcb67a5cf05811c08e78c. 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/USEE10412393.
Happy Days (feat. Keith Sweat) - 12" Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f42aefd34f451bc93b97f0af0817d79405a4b522a1dae04bb46a68dd1c79874. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USEE10412394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923608d0bb8fd9bdc9873e01c2a7677317eb11194f4cc4c799fda30eeb15c76a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USEE10900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea460a1fa9e0d14a61b2982e7f55f515d7dff488e05a2479928fc906742d662. 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/USEE10100387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6b21143fa3c5e51807666ad37dc8233ebb62aa5e845dd693babccdaf5dacb8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USEE10001542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c616bf0626083387ab1152b24dd82888f77d562774d55e944a6dc0d83acd440. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USEE10001546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd16d62d6262ff3261b3d46968392e45d47f99f088c533b5f4442073cdfc16ac. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USEE10001548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d638b31e6da7d4843f2761f13c3916d819c6c976f0480ca7441338d4b207971. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USEE10100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4a6f214968c2a89b06806d3318f90dd3da453ab27b86873985f7f4de07ec9. 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/USEE10100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb247aecc8ab176473afe8d2e0241b477bc79d422e2b7649172d9e4784cfa8e82. 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/USEE19800175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4428ddf3514333a0c8d94a2b9a3eca7e2d7f32276b442a55abbbccce7010b2c4. 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/USEE11200779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1060dd94b128d4dfabc50fa09981a2145638fd9820bad0acf7affbb66b65cede. 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/USEE10413042.
90s Classics 90s Pop 90s Bangers 90s Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923608d0bb8fd9bdc9873e01c2a7677317eb11194f4cc4c799fda30eeb15c76a. 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/USEE10900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923608d0bb8fd9bdc9873e01c2a7677317eb11194f4cc4c799fda30eeb15c76a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USEE10900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1060dd94b128d4dfabc50fa09981a2145638fd9820bad0acf7affbb66b65cede. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USEE10413042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923608d0bb8fd9bdc9873e01c2a7677317eb11194f4cc4c799fda30eeb15c76a. 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/USEE10900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923608d0bb8fd9bdc9873e01c2a7677317eb11194f4cc4c799fda30eeb15c76a. 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/USEE10900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a5d98b786fdfc8ed8885c37e193296d44f67a20de738853f0734e744ef9be. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USEE10901041.
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