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 0x9aa15ea74441832706deda8a488f88f8db9ce4077885de706f3c762ba25bd2d4. 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/13885e0a-b270-4937-8c20-5b0086ee290b.json and https://artists.proofprofile.net/proofs/artist/13885e0a-b270-4937-8c20-5b0086ee290b.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 0xd3622e3489d99ebc48791511ed867ac6a254616ef98261f083717be68701c2b0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:38Z), 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/GBKPL1820131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa81b8776ae09a4787fa166b08f9fb33a940b8e3caefc6723b4d5ec529f6ae0f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBUM72106367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b56c111bfa0d98719ba33cf9c3047b6bdd8059acf9858460809727609fd7919. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBUM72206192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b56c111bfa0d98719ba33cf9c3047b6bdd8059acf9858460809727609fd7919. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBUM72206192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7844fbf92ba4e636a109269eabb3efded27de78ec7a15b4f8fd5f1ac8e84d5d0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBUM72206195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb991bad1048fd28221adb5495e3cebb6b1b8c4f121fb0b1604d0bc80cc14785d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBEUE2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a445a94d072ec075e4ae1befa40cf0155084c33a23d09c89564f371a8edfbf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBEUE2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502c381ed0889bcdab2afd21b9dfc9b58dffb78a83f810753ad529adee896b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBEUE2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4e0b701032e4c09f8f82c9a45290ff5d3a3874a3e32d001cb8455a27f227c5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SGB502306973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46a014738e7392924e8fb2128ed30267a002d272c6871de8889fa16067068f1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBEUE2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0627193dce898f5862abcb7029c593ac6a6b62a0666e107b6746949c330eb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBEUE2400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb991bad1048fd28221adb5495e3cebb6b1b8c4f121fb0b1604d0bc80cc14785d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBEUE2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4e0b701032e4c09f8f82c9a45290ff5d3a3874a3e32d001cb8455a27f227c5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SGB502306973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a7126121afbe447cd8d3ff0fbda610358be5bb0f1ba12844d5e49272e1561a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBEUE2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7692b55643f7ad0aa17077db5390b76c7480090f1b67d21d2b5e513ef0fcb0. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:16:52Z), 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/GBEUE2400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46a014738e7392924e8fb2128ed30267a002d272c6871de8889fa16067068f1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBEUE2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e8034ead75841984736b2c3f2eb87961ba7996811429190c224aa8658ad79. 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/GBEUE2400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0627193dce898f5862abcb7029c593ac6a6b62a0666e107b6746949c330eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBEUE2400215.