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 0xb5e621ce5add9c169565a3d18d3d3a7bf6d4a4b28587112a9cce109702e4636a. 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/0d389a5a-0b0e-4d38-b5e7-eab0adbcbfc7.json and https://artists.proofprofile.net/proofs/artist/0d389a5a-0b0e-4d38-b5e7-eab0adbcbfc7.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 0x3c086998fc8f067613c5fcd0678f7cf227e0c616e3d5ce0b12ec7775981d8384. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6N2382467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901a7c4fbf3eee29fec6f5414cee6ad74f4c755075543ed903a8be5b8d1a12f1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CALVP2056626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a4986ea2f7fe0bbee2ab5095dd94cc314ef1a8d00777500747910362d05f3. 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/QZTBD2402317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780febfb3e14b73cddd1a3cf821e8a2c60a2fbeb58eef1bf3b12f7be288d1913. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES84D2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ee9bd194e878513f8e9f73675672d5d8cf5627c546f6eaf6ce643f258ff8d7. 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/CALVP2074225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef9d2adedf1b901d198bff086045c6d68fafb6858fe40d72e87b5ade90d1589. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA1H1955492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e85bfe5b78b5dc5b0099d5953a696fff0f5782b6978b4f547668af78345f8e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62371320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acbc5e973c585b61f672904987726e29c2ac01cc481cc81ca90eb1cf8769fb2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN62371321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4498f880f321a680eccc9025820d7efb4c9ef6573fdefa65b33bd69bb4303596. 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/QZHN62371322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162359e4763a0d77fdaef847f02908099f987322b21ffa02491d5fa8e6bbecdc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA82356553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4564aedd5e60edff7433ad5107af448b2ec1d805c5bd627eafa33b0ac86f288. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN62371323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f59c70427162c9bd95e239c026b9247806f163b1553f44db70d736ac5b75e3d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBA2226657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e557c777875f675bbba666b64914270ea678190473b71649d38eb4213302e50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES84D2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d21268d8092cb8e4f7d5ae0d624b92cec7dc6a3c356143a4172513a5b8257c. 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/ES84D2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e1b5f1ef2c6825a6d447dc599e070c390396234962219c557065c265b9f47. 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/ES84D2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338c5693836014de1531670266c6c59aecc248102ead8d0074d96dc9eacca880. 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/ES84D2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780febfb3e14b73cddd1a3cf821e8a2c60a2fbeb58eef1bf3b12f7be288d1913. 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/ES84D2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52e277148f4cd298bfe34621cc97d68509dfd649d5c396d080f58e8514904c. 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/ES84D2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd176dbc60377d6ce17998f40f774012456490f7abad2f29d9ba9d003772422b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES84D2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdc16d72ca8ab194ff3e8dffe54835f0d3dbe0eb795ca958ea66e09a9c30a92. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES84D2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0279d0bab1a9cbe27c4534f25570c159d10d52a3aed3aa4a1d176f3ea3761c90. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES84D2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3d312dde15cd9a730de04ff90cf84a07f9dfa3ee321bf16f48a2062d6751f1. 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/QMFME2247835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcc67a8c54c92cd10e2ca9c387cc45948ddbf11e8ee6e07aebc9e815ebe2737. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES84D2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a4f87e021df54db43757b4627d02b7398e692104770ed71caa503007aa9c64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES84D2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4210ec43bcea96671f7bcead56976b5a59c3425d08e537ca2e205be1483c97. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES84D2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24f65be6e6f3a743a120f81765eb1b09fa16b67313a923ed172fcf6a5224bf3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BK4DA2410111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999d04cac9e3ade8776c7b3dfe5c6612a414c853767d5c090dd21726dab3b9ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2410113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446f23c8a72aac914860a88f64c90836ce7098d2ca82648cc97cc5f50bbd2f5f. 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/ESA092334119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1114f35bcba47ca6783387259c4b6c56aa18c4b56da337a05fe836ae09fb2f. 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/BK4DA2410112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5429525b13d468426f81981b44140d33141bd2b5e1b2092a3bb2f1c5be6ebd46. 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/BK4DA2401649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2200aaf1ea415a68bcb405f6d0460e076f7513d1a674eb89abc151a012e6c4. 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/QZK6Q2457935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392bf4a97f346c59f455d8d344982c5486ec0b2f7e186533d9b934bd58a33a94. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6Q2457937.