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 0x3fea949c255531f37573b5827aea78fd0788fd14b27151d07c063706ed865ce0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16524399-8d66-4dd3-be87-897bb5c335db.json and https://artists.proofprofile.net/proofs/artist/16524399-8d66-4dd3-be87-897bb5c335db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reunion: Live at Madison Square Garden 1972
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 0xab8561309797ee0fdd3baced867a8bd1f85b3fe27ef60d2dc8db5d7c6db37447. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMMEH2300505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd940c84930a62a74541c3960e15c127e12669f42d0a9cd6951dc9c013a07080a. 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/QMMEH2300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39777bf9a7230d4dff112daf0c09e60dd965a703f830f126716eaca18fb1b4de. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMMEH2300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa68e20dca9b7017e112d7efe5dd922607da13bd4ec93c802deb733050e1a01a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMMEH2300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fac348838379c0738707518efd9763225644d01b140837afab87ad3ca6b37c. 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/QMMEH2300509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a60d97da9e20485b66eb8a56932bbfb2b03fda778088d5b74be5f9e9ec1f4. 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/QMMEH2300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efc2d17fdc146fc69dc1904bfc37d351d84c78166414b48c5112192efad61c. 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/QMMEH2300511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb57d4812a0c8dfd0e80534ff8d5c4323b644e56202126ef6bf83e0967376d. 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/QMMEH2300512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bffc72699a7af78f042a5a14baaa7bc915f28fc0215ebb0b6c95b65b717ae0. 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/USLA19200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641d485c58498aade3e4769094a8f8723e1469255af25de251c34d2eb5ee95a. 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/USESM9300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5261194bc3a3e118c1be938a628aa1edef7cf7eda6ee721efb5abde8a73e77c0. 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/USLA19200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe80ca6db6754cace6557c64f7dc8f6e7559f58918f7bb2954a32b010992e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUM71803549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e509d1ce2c420a17335507642c724a1380ee1141cf1fd0437a61fa09a831c. 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/USLA10800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263864f4a4451cc7037948d7b24db43715b1cf0303b6953edb2ebe8ae98098fb. 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/USUM71803562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffc06f54808fe0f9b8b82bd0e0dc9093edb92b36bb8b42a52b2330557aa066e. 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/USUM71803563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ed04a47de00aec684404e0f497546e648804a50e39d125b20c256ae69d918f. 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/USUM71803564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32702a22c862290c059a33621159c47403d4ffa336c076f5733e13ee2ac4498. 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/USUM71803565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8359fd2a3eedf68d3d79b22c7c5690839af9a59980cd986fbf59f099ac1b614. 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/USUM71803566.
When The Red, Red Robin Comes Bob, Bob, Bobbin' Along
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03c34f82735ad8c3a8ab7b76718c61bd66641762b74793179bd3432a46fa73e. 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/USUM71803567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8581c3997bcaea8ef935e90550c7706f76675721c0dfcf7daffceed8a202b3a8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USUM71803568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca786871710fe3cb2540e47e14edac2213a2f4703f14d103bbe1ce1e60527a9f. 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/USLA19200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d321c1f0cbb32445bc5a5b193f1f7912e24e4f0fbba6037c38da8755c97ed5. 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/USLA19200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5662989128e9740a37755637886facfefe7472af4efd0d617696a25ecea31deb. 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/USUM71803385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d2f1f8cfc0fea40039ac544ba0c05aca6a717817bfa04f860d1dd8f09f4f20. 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/USUM71803386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3ea3a2dfc1bde65770c348968b85635d2ade10f5c0b7128aa8141adceeeaca. 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/USUM71803387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495ea1a555163ce927bf4b23574360935ddb95d1b53688d7183bd2191331ff18. 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/USLA19200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a9bc212605ec946959dad048b1a7e83e172ccc654af447e49c4d2cfbc4cfac. 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/USLA19200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36890fe10d8765b4927e14a1b72f13ed1393697f35351393f34e3d63dec0946d. 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/USLA15900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586d979a98361f6167eb8dcc521886b5f3a8a859dbefa61c18c12a777d1eb06d. 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/USUM71803420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84f86a7bf19d5ffe4e484bea065711a24ddda6391cc796fd7a37667151ac046. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USCA21300623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93309b95d09eae38d6839597683c0828c6fc57fe9f16938f89ea1f87877e235e. 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/USLA15900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66edb8e89048363fd6ad22023a38eb1f3878b0ff9c63102306ab46ea8949b1be. 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/USLA19200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db1a59caec25140e837ec6f3fe49d004933f787949c70a5900fd6cdf1640547. 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/USLA19900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc523692c26135ac30fce9d2fc8e264923c9f4aa1f3ee47267428ceda87fb0da. 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/USLA19100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d151f787226b1509872d23e9314f942a84c0c596ee670359cea4ab0991b7be3. 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/USLA18800001.