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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94caa4dbe45657497e20b751628476ddb8c1adff18e8dbccaf489a6344bd4b34. 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/41289297-2b9e-4ed6-b51b-0e5aefea7d1e.json and https://artists.proofprofile.net/proofs/artist/41289297-2b9e-4ed6-b51b-0e5aefea7d1e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b8da7aa5d5095138ab8196d2e593c7e7f51bcd19546ae1550b43c2e9df4351. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USZXT0805780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3b8e6e2ce052ebc726527eb96d8f7112491740dd189c38d61100e1e1a35767. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USZXT0805787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2632fdf0e45ac74034506fa234a1f9b7f2357ea5849c30816acebb942e71edc0. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/USZXT0805792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0632ae8980b484b0dbcb7e65028609a9e200386cfc2d20df524c49abc36fe2bd. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USZXT0805793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b4480220b140a4167fb382b491b1e9c2bb8e3dfc38d196b4ff1b16c63bc479. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USZXT0805798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ea5a8dc30d7f2b706b50ebb0b251730ebbe90192743211198c8dd5af37cfaf. 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/USZXT1201735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9227341aed118f1f84c07254fdec54216a4902147d07adf0cc511c388878632. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USZXT1201736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab702b691c129797b4111dc4a053c20fa2a00789a73987a5a47149924e7364cb. 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/USZXT1201745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2219e9dbb24995c62b3a3e5d2963042de6babe106e7acde657e941d1ca4dd2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USZXT1201746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423bf360fcc821381a667a6c8ac8ceae4962590b3fbd6bf7b48c55f304681fd9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USZXT1201747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec891d82e4da7e227d9c79eb28f9b0376c5ba67c148a6d83a347c81cb22f210. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USZXT1201748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f0a1b90fc5f5abd0193363a80eee5e4dffab028b3ca8f29fdf9b36d8c20610. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USZXT1201749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778c855891c3b617860d9af2291309b0e98c5801dfacf36e1f95a543b860fcde. 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/USQY51265527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea3f9f33ac4e9fa3b750b330f1cad8d59f7387270e7a39d8dfe6ec8c8e9d88. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USQY51265531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb85fc8fa494c623926c460b7b77804a502d92fe7cc3afb543775a499e23a6d6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USA2P1284239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0ae092bbd2c37a7dfbd1414bb9618053f3a62f7c4c7ac1bc88d518c2766de. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P1284242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed69c669e66d8aed65822678ccc8688823592ed8acc5ea0167441f5f2588517. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA2P1284243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59836cfe2b97289f3f6c49ab37a3827c1949dc380e45bf4c342222d7051ee9d. 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/USA2P1338027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d5317152a6dc380d49d38fe3bee4c237910316b50f309563331d3592d5bcf6. 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/USA2P1338034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66fb0629801275b8e23c240274d3ceb4da4bb37f63fbbace1cd952b9712ca20. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USA2P1338035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda4da79e06aeb9656a092340121ac8a7b5055d426ff30aaeb183f1d89df5b6b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USA2P1338038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7383cc99dc91445f373b59125e7ca5c33680891301dadf8082d5324811795005. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USA2P1338040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3465ce3e49eb3510c3c38a31cd32b816b07ed39c208387f466bde0e1809f5fd. 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/USZHR1500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fefd9ef36a106bb32bb501520d7506b4a8eaff07062e1af632deed94bd7372. 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/USZHR1500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46440f7f12e8fbe817f9b9e49de3427e7e0567009ef45f437ebdba1e1614a80. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USZHR1500139.
Killing Me (feat. Krizz Kaliko, Blaze Ya Dead Homie, The R.O.C.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e8e6ac92bfd5ed3a03da2e00082356760e629eb397f6a58b47e7b5d464681c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USZHR1500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531841bdba87c9a64ba207f1cb5c9f354fb813ddb4f4b20d9897dc2dca6d5f8. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USZHR1500141.
People Of The Outside (feat. Tyler Lyon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bf25e825785f2db4df34244909e1fcb6690a3cad33ac1d709199eedc2a97f9. 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/USZHR1500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32a448b5d462c298702dd5d624f7ed8249a9f5f6df1a7c6f950d449a7225bc2. 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/USZHR1500145.
Strangeulation Vol. II Cypher IV (feat. Krizz Kaliko, Rittz, Prozak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e44027a6278a2d5eb4119b49076b45b41da9a02ae04901227200d01494527. 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/USZHR1500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487aaa218d3718ed343a839b20384dd0301291904e080b048c7c4132405d717b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USQY51176095.
Tell Me If I’m Trippin (feat. Prozak, Brotha Lynch Hung, Tyler Lyon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97c3843606f6b0f783084ac91f5e8542ccd6d83ea32a78bc1612b4a9948f6f1. 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/USZHR1500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97b8e29730998df89b329e2db68ea1bf961f2590d4c01a631c9eebab2239a0b. 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/USQY51441817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed377de148b129fd23ebeea78551c837db48c2c211a9eea6d61c193ccb6baf. 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/USZHR1600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed377de148b129fd23ebeea78551c837db48c2c211a9eea6d61c193ccb6baf. 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/USZHR1600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3c0d4d2f0e9040c69689995ba327862bb303311f8fbf4580b047498d733b37. 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/USZHR1600321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97c3843606f6b0f783084ac91f5e8542ccd6d83ea32a78bc1612b4a9948f6f1. 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/USZHR1500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e44027a6278a2d5eb4119b49076b45b41da9a02ae04901227200d01494527. 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/USZHR1500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97b8e29730998df89b329e2db68ea1bf961f2590d4c01a631c9eebab2239a0b. 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/USQY51441817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8220e18dc9fa226ad228aebbb2258ebb844e0545370aa12cdb66f0f0148145. 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/USZHR0700051.