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 0x8aa58a4c1cd24856224b03e2f24d228278f40830c0ec9e3f9d9d04d4e19f564c. 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/d3e6cd26-6fab-4799-8361-82a530c605f4.json and https://artists.proofprofile.net/proofs/artist/d3e6cd26-6fab-4799-8361-82a530c605f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sweet Sunny South & Brushy Fork of John's Creek - Instrumental
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 0x5d06213bc9f9ed334c5646b4327d0d205f5ade720f87c1d4427a2d6fa29a1def. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZAPG1702176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1bd783fbd54eac0191c07af86106c2cd16dca3e10b80cd22100e61083f1a70. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:42Z), 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/QZAPG1702179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517e34947b8bdff6508e6158a24225c5a851a4822d6b4ee7527700bf28e5631c. 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/QZAPG1702180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfa96c9914f4050a46ab6eb2aaba600f51ac867f828bb59ad7ae0c7db7680cb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:25:00Z), 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/QZAPG1702181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe791b4b43caeb9928413b869ebf1d584a0ff634622533d0a70072bc13b731. 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/QZAPG1702183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab1a1ab79bbbf41a794cdfb6f1b987c0e7b669b4ffa02cf167f789345d96a25. 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/QZHN51970424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe11cc95fe688e76b669872985f205749381c8985b0fcbf6ae3489a7735d5e15. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN51970425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadcf6f7168f7fd4230f6bd6dc945be65cc31cf920b581baf0703f92987f8e61. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZHN51970428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cb4adc6fa4ca4dc2492318b97b9ed1929610f689592090daa30b4c7c5c4ab2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN51970430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40db4abe25e6f3ad53fe5fb08aa0d51a82bc7496cceabe6b6fe1856edf15a0bc. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN51970432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25ce2379093242ac1d63a602bafc3433eaf5e39343a562067e01b32d98a866. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN51970433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582808e3eab6a9a92b1ec44c4f9f5faed0ec9ee960272c429ab5ce6287ee1f17. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN51970434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5693bf66824322ca050057595c6ee4ddc5b3cea56d3436123e386c6425f290. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZLGF2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca396ec76a087c5538d243692569dbdd7104cf2df315bbf2f70d2ce447fe9251. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZLGF2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3fddf5dcb9936fc26e000efd0005bc79d716b1a293ea15432b8510fb9accf4. 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/QZLGF2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505a03c40adb7fa05cfd223e724c779ba8edc2bed92f822774ea2c299d2b6ebc. 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/QZLGF2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc894f0144a279d291d1abb37643d37903d33d4e6684abe3956ff66cda01a13. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZLGF2100009.