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 0x4f1aed7e84760aeafa3fa323ef780c04ae2c02b9d4930d11a8a80ad056bd653f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a72c1b21-66ac-41fc-b4c3-5b97830ed2fa.json and https://artists.proofprofile.net/proofs/artist/a72c1b21-66ac-41fc-b4c3-5b97830ed2fa.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 0x1cb80d33b6bea531755d2ecbc06ff57b316ef9d1615a76db8012b98cd294784e. 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/JPR752100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4b5a7cd410f7a07bf3bf3c25a8891c96543e3017c811420c8ebdde519feb0a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPR752100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f41ab9c0c8b7c008d0d45325a54d5e944ba0184a9c0e1c47f8da0023eaf2dd7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPR752100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72685ae0984971657ce72db2db6e005abe08cd1e4f612391f0f6e8bc9df6ad52. 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/JPR752100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe84ff8e795094de3d6e5700f36ee0d6a7e45cf27bc34fcdad7412220329276. 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/JPR752100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103d05f47291279475152d13cb89c3ebab8de26af957f2df9f71245e332f7587. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:26:04Z), 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/JPR752100240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c86ff2f0f394109b100dfbce3c54beca0533d68de6cf987ebe0d4d29e869d13. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPR752100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10fa0b3b04b31155f111f33fd128a8857fdf4833b87c214b43f9c40eb093192. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPR752100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13b23b862f19498db23150690679191ec972e28c9fe7adc84932de58ee4fa38. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:11Z), 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/JPR752100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06094dedaddca96a2c37eeec337e6826819a17efeabb5883edb58deb283a2d5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPR752200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fc8beea644363da4fd76a72577e633abf4d692346168b7283d147272f0b5c5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPR752200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27a36bf0d7f6d9cf58f9b417484951c27a9a14aeebfc6c806fffd53c6498138. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPB602203253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bced9248249112e65240ab0ed39f2b9228bd96ad6d7f9393a69abd01251288. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:11:45Z), 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/JPB602203254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695767456e95107ac0930340dec7f5a663bd6372d0a921a345a27847e6ff096d. 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/JPB602203255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65acf42f48fcd4e41ae30dc830e674f1c1940997165fe87fdc88311bfc9fec71. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPB602301426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f87774e3f4888a3e0127607024d0c8a566200088a7590ba5dcb9d44dee81499. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/JPB602302603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7b2cf5a06f9d14d135271ca28f4b2e1731723d201643d44612a304a1657bf3. 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/JPB602401127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e4bbab1c30a9d1b79e107912c3fb5a856dab9b076a8adbc0a41d755dd93c19. 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/JPB602402880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27a36bf0d7f6d9cf58f9b417484951c27a9a14aeebfc6c806fffd53c6498138. 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/JPB602203253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dc58f62cc79a0dce9963452576300f3a2f7907b37f18b153a75c709d0e8b23. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:00:52Z), 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/JPB602400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a66a651f605db8f39944e460890703f923decebf45b8a71758f7a24f1ad016. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:09:50Z), 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/JPB602402879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6c2dd877e9bf661c72dfa8f7922f0893be3623737f7a64b33df21370311f55. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:29Z), 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/JPB602401126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa001c072110808bcb3f2ac93a7906b156c8ab9e0e9ff97536ecfe4d28be70690. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPB602302602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d9a12b775624b895caf7ff363d8f981fad72e853fba6cef770c8459c3b78e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPB602300763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490a8f21d140ea892969763ff10c2f1d33e1a23efd105a4a007647e7f78385bb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPB602402877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41ce97d15d541215935c5a1c6acce1ef4d3033333ec427b6ad09e6190dcc1b9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:09Z), 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/JPB602400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e156fe86efd2a2fbc33554405850bb26ee67139fd3cb405be78c9bba26b206. 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/JPB602301425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9de2346cea19162c74ef10901d71d7e99f614c99e6e5952dff2899973b787f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPB602402881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1dad98e2d5fc5639a50e04ceb22b9fd449f2dc4345b3de822a1d9f1b01ab88. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPB602501658.