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 0x7d701a6c16ecc845d7ac17dcdf65ab9cae66f222a328951e1ceaea5d6561fdeb. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3081eb5-16cf-4892-b98b-0cc093bea014.json and https://artists.proofprofile.net/proofs/artist/e3081eb5-16cf-4892-b98b-0cc093bea014.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
This Being the Ballad of Kicking Giant, Halo: NYC​/Olympia 1989 - 1993
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 0x3cb11a4f75e6c0a9c2c2c43239f02a3b30e020baf17ac7b27b22c2a4794b1f64. 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/USA2B1703443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b81290d00e177180bd1cd63164e1c91c31345b01ea168b61f6d227a27d6dfe1. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USA2B1703437.
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 0x9e11b6e370f624e37390f0a84172458dfaae946357e926d8025557fb82d5a44b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2B1703442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1502facb4ff20c4b859fa112275d693c0923212161aa2694f4f1f885aa2aa7. 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/USK110403405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc2d02709c6ac7dadbc7167c0d44e3f4b2c89c61ac367aaf679a2731835bb73. 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/USK110403413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86029327f6e7c4cc8587fd0963d39c81f69b721f510a5826184c21b9205734db. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USK110403401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d157b020be23195c1e36ca5e8513872e0837c3e59c69251c9df94d3fde9dd3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USK110403402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d692364b50f5af109c820bd34fa59d64587c7da376b08b4dbbe4c4b978dc346. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USK110403403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e42d9a03b9a1c7b593244dd39a6fecbcff2f78c160567201215012c8da1718. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USK110403410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54ff780a34cc5d43c1f6f9034c4b70e9a54bc52119f1d0fb9e080ca00392f68. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USKRS0320101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd7e69dab6ba769726edf1c19c37e8c5c65a1a40bfa32d03dbf73c0ff04b329. 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/USKRS0320102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1f809795a8e26c48b956bf8957e661c4c0db0dbf9dd09cfedff5d27c00790. 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/USKRS0320103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ce7f23004def336c9b46be73322b76a02dcb32d4138c0e68667dda3c54f282. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USKRS0320104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc271f3574925f54763be478aaaa99b7fdf4f189d5a667e20aaeed27f17c94164. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USKRS0320105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e863b18bb158461b7695c317277682f0252b10990f74b25cc36eae3943b591. 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/USKRS0320108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d53b255a702b4e71c9a61a52b96f9ef81dfb36309721f29f3fb6e1d7c16081. 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/USKRS0320110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b5051e9ff43cbceab68259f52201ab13a629d7cafa1377b596d3140351e70. 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/USKRS0320115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1783bc78a98e5d39a35f9c430af0880b08aff9132d121a83539f30b64b9cd35. 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/USKRS0320117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bf7e0403bfe13bb05e95cc879d9075e626916c9e751bbf0b1b6cb3a0e80cc1. 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/USKRS0320118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f2ea6b3f3cd7e2d8153989d5ec8befa1b7605daff360e9b870d1aeab3b5133. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:54:43Z), 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/USKRS0320114.