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 0x3b576573a25ca9eadc7ed68265a510958dd17fd938b79c8a0e548ae373b548c4. 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/d1a12642-fd39-4f51-8530-7994b825213e.json and https://artists.proofprofile.net/proofs/artist/d1a12642-fd39-4f51-8530-7994b825213e.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 0x11fdb44386d55f760ceb9a2aee6292ea59feb26dbf50801086dca5aecd74bb48. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACR1635261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090fed684c70d88f029e884202ef99846b36b54cb12f17b425d75c3554822274. 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/TCACR1635263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fea4b2396d7ad79af5afb9fa4e0c8f624b74f3993e69ecc147813e3318cf28. 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/TCACR1635265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f59f44a9e642714b96b722f0abf52d557fdd5b29866a54d987294a62d5eab55. 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/TCACR1635267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27830b069393f4b967d4a2cae74e81f1132078709c118c87a1ab4480f88c109. 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/TCACR1635268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb830c6955844c4c981ff495bd10878facc5c8e6c4ab287531d759682524537f4. 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/TCACR1635269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dc3bf314e7767db05754b813de6c0963137a26a7866a1403adf2d757929552. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:39:30Z), 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/TCACR1635271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38c0c3cdccfd82f3346346190b415aac13d21f991a83262ef230f9bf9f590b1. 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/TCACR1635272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433b813daad5d20efdb85497af2d07f1fd0cecbcfd2d0a6123c067edd30cd710. 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/TCACR1635274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9915f0059ba9784eeb10696d4abcfdd9aab19f2ac06f89f5aac3a492e4d4310. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCACR1635262.
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 0xac9548f1e2933f8c0251051f28fa6a5435714988354e550fe16cfc52c366f8cc. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCACR1635266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12073b66e9cbebf35805edc366c6b4edb992548265ea2a73dea71d8f432d979. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCACR1635275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bdfa007157f3f25434e8d54b8e7f6274de4284c12bf6cbeec87cc1b5bc4d95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:30:05Z), 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/USDY42498475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f00bcce57a8e0246dc20da15b31e05e1f5eae940a6adb57c8c0e1b6ecbd05f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDY42498474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8899a6ccbfceaa882951be28a0fcf0b08c09f9d42258ea9e74b65673b0e0f. 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/USCGJ2196023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda92c00f5db02baf8bbb65a56b53fd834cdc7f206b110fcd592575751fd3555f. 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/USCGJ2058886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb7c75a24f35ca0b1b3aba11af7b9fb1874f5d8a84c7e042f7f29c08b83ce4a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ31907989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be02e1b93d7d49166fcc728d91045010e7d31bb76f79f09c7c8535770b808ce. 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/TCADK1717670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a977eef043536ee0d807be38cc8fea5636d8972e3af3dd77130779391abb5cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACG1547319.
Visitation Song (feat. Jessica Schissel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7fd28bd2cb1725dcb40fdddce22e180a31b2c4cf78943f462069ccab3cc8c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACG1547324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797277844872eb767f94d74e0a05bf473adc0256dc9a5843ccf241924432e7a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACG1547341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114702184853c3a8840c9c5fe9554b8bfddafc855d9ce070aa23ab5c8b95fa09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACG1547342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ba80f601937b9d274625ae2dbcca25cc91a150ad2d7a1db048f590fdaedd1d. 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/USCGJ2153112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f84bd627d73f78316bfc0202ce1f32a0263c6a838967d56aea97cfa4d731bb8. 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/USCGJ2153113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2830fe599258a8a2f4c1e35135c54cf231b5100419dd1a144392a137c09a08fe. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USCGJ2153114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938dd198625421f75da4aa1ab4a157709a86dc349a135588fb2d18585511714a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGJ2153117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c9acfb596d4fd020a74d1f5c81773f2e0f3aa7dca11baa8726710e4e321da2. 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/USCGJ2153119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681a44dc141ea19b380c614d413b1fb8ae5772750cfe85564152218c2e6a3326. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGJ2153121.