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 0x5e33edb0cb0c6c3ab874480299b5a0a1aec9a653121c8742fd9f505416bfb683. 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/3349c648-a895-4203-8a16-26b81e60bf64.json and https://artists.proofprofile.net/proofs/artist/3349c648-a895-4203-8a16-26b81e60bf64.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 0xadaf5763ac9448fed72f6ef96efa7ed82dd88022fcbea13a13e5a6144dd70431. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCJPP2180057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6744de05ffae6425bd4f79a699204466e7b580d6dce89376eca46fec6912cbc3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:52Z), 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/TCJPP2180059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e23dfd422686819ffc6ad29f2a3f753d095bb83806f26975fbe36586aaad33. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/TCJPP2180061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744d0a339c4b34c7950fb63e13fbf12dc661e33ac45476d91cb319b94b10d7c. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TCJPP2180062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d442131e4b6b77b29f2c05c7b9050cd91a8ab879680b4105a693414298fff9c. 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/TCJPP2180063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79e247da326c9aaacb09b3eaebc23d4e02e2ecc00eaf29f0bc74ff9f60df392. 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/TCJPP2180064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a7c75b00e4cfb4ea5e65470a09f5426164780f2c2b166f865ed033790ff20. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCJPP2180065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dddb2bed99ea521c10cacb0a4e9b599913b827c6cf6e787642f0648575256f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPPC02012239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee01bcf6feb757f6bdcdeda0781cc1374a77826e93d6057366d29e471f6a8765. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPPC02012240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356877bbb757cc8e4999365c8c2e2920077380212ac420fd695413403ce27a69. 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/JPPC02012241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7bf58d9de34569d88c63893807c6e95e4255d14a5b733c7878646110b29ac3. 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/JPPC02012242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144a1301028ebfdfbcba80eb6d5441af54977c6acb2007c1b2a28fbf9b4114c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPPC02012243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5c6f808ad849e4672430274a1ad7d5e754fb62948cdf9f5cc5021ed9a78c25. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/JPPC01912741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b33651d7483a09e107d622a0735f4275f972a988c2c2858ceba2ecd5285da54. 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/JPPC01912740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eb18bf94e2478e0259be5b89e6b093800d28762e2397f4d213c7e0614c8161. 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/JPPC01812825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7345fc6ff768ca41540d4e800bc853b29cac5eabc9d1ee91131c8135b295dc2a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPPC01812826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a06b9cac957dde7c25c022bf838327cab90dc91668ea2c95bad5aa037c3347b. 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/JPPC01812827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b7128c4fa76919caabbce809a174c027a8491da11e582a43181232d3f3c454. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPS2200786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2345b2a40965f90b4d9fa0fcb1aceea358f097430d90c75951caa22c1629c7f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPS2200787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881311f34232686dcc83a45bb7841c83e67c9f583cb472b47a3e992f1ecf2e12. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:23Z), 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/TCJPS2200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70bfe3ee8b77b6c54415677464fb812116d88afdd180024571768f94a403ea5. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPS2200793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742e2e491a2fdce880ede5658259555b40d3ac2e78a304f3159ac12cb289f354. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:54Z), 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/TCJPS2200799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5edc640c1596d4d1f1f19921d91936da1f6dadb421166f9db68ace890a42280. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:15Z), 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/TCJPS2200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd944e7077c98ea1672ba89cde0ba311e592e3464a91aadfb2f2a579b958ce098. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:02:06Z), 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/TCJPS2200804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5744799808f0a3f93cdc8427e1204c7c6a9f26d6d40b9e17076d1a5869d47c. 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/JPPC01713086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f02ab162b2297b765f4153373bbf2d20d3fcb715342397bd345ef1e791dc88f. 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/JPPC01713087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6642e8b65276ffb84e0643ae8aee47df84bf898e33b240b3a19696881a5d20ea. 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/JPPC01513269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f37ae23c4b80858a5e2146b3e6c627cb595d6b69f1366dc37d5cd724f2a6675. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:01Z), 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/JPPC01513270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa947947bda56340e5a878a0e15a4e79fbdffa981fdc79c11954222a088c7f027. 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/JPPC01513271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8a88e17d2bcf417bdf5587494d280c50094b9b679a8941c916aba2953ffacb. 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/TCJPW2315159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdefbdfd5984c2fe97d1bf42f11fc6de9caf52d3d95dca7cde1510d1d88afaf1. 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/TCJPW2315162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2651b6c628f4ddbc67f8cf6f51757c9063cb8bc072136c967b0b56256288964a. 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/TCJPW2315165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0037468376e9aebe1eca9f1e006b8607f60f712d7d63595933974d1d13c49c66. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:24:47Z), 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/TCJPW2315168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102f46ea4565d005a196a6b5ccb59604c762fbe493569ee87bac07428d7b6648. 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/TCJPA2459088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a4c63c2b20179ad03f8d3ee0eea25063fbf9549410f101d68047f9da10c4d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:40:15Z), 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/TCJPA2459089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74eada1964bde8ba47f58ac49e8c7b42c25058f9eacee1046888d458b7190ce. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:34:36Z), 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/TCJPA2459093.