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 0xf720fafdba90ff57f8422c86635cf976e2391e44d2797216508599b8dae4697c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c31cce6-a8e3-47ff-b87c-7a76e45815f6.json and https://artists.proofprofile.net/proofs/artist/1c31cce6-a8e3-47ff-b87c-7a76e45815f6.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 0x8e1bec45b97f3f4390b442e8942539056835c9a6d3593ea0977f89879bce5e70. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/SEVGT2000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9951e4943afc74174921af1c89daaf07a34fa28201a20dfd18964d4dbb85ea. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:31Z), 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/SEVGT2000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f6f3941b0acb020630ec953f33f94518156c61fff555facca6be7a702ab3b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SEVGT2100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd749e0b7465e43d13dc8b8ffb4ebb5622eea88f8d60218f69e2897dfc33fa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:05Z), 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/SEVGT2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa1b7f2175adf9388856662c18e528750289f88d9d4de0a05a76f80f339fc37. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:50Z), 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/SEVGT2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1936aa4265269cb4671bf50830275dec5964020e779c350cf58ec3ebc58d862. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:22Z), 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/SEVGT2200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7482a225a0d2f4c6dd94dcbf5d8b47c5b84b7d8eccacfb294bf6eacd08f7a13b. 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/SEVGT2200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8ffa1257d72db783bfd9089907c61a481946d25dbb58b7fa8467730b24eb47. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/SEVGT2200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2ab7549f8eb30d980e0e294000ddc74178f396cf309a0c3298483bbd4fff9e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEVGT2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dd0fb434dcc417a12ac2042cb4146e3db70ecf4044da09656afca99d43ee87. 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/SEVGT2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e19e393085c70adc0487f4ceef0f768acfd35367104b8ae7d8cefc6d19bd89. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SEVGT2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cba69e83391a9358f0ddc9577d3a78d7f9e9d15ce51c6a713040d3078f9e80. 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/SEVGT2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c0296ee594bbdf1cd417327f3f7391365be67a50d9df17e533e6a13dff04b9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/SEVGT2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b32a2086261c43c99c58fb1ec2cea0ccdae46e63c06cbc851d1009b6673ee21. 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/SEVGT2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825854ae2c9eddeaca3be3e4ce6bc776a2bb789acb3b88d502c7f399132131b5. 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/SEVGT2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf66ae156ab66443933414ca7b6881e6354ae9543aeb497af9417178990d9298. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/SEVGT2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aec48ac004097db780ed630bcf4579efa989b6e04bb877b0c50cd0241a45b8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/SEVGT2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb396122e19b5ad4859cccc35ee5297f2ac59d1b282993c2732310e1f592f80. 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/SEVGT2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb25a0f522c09f5202b5e4b44323e28174a3cceb268f9a90aa81ec37d74ea54. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:49Z), 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/SEVGT2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c96d3b79fa45fdbd87895333e97672a5089f7a4c4177dfb801b41446d6554b. 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/SEVGT2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea0749f1bb55a88268cdfa519e5741e398ea1401d5e4d6d9ea19a52faa60a24. 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/SEVGT2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a092a7576adc2db851be085314fa421124cb7320445d707359dc1a9dad8c02c. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/SEVGT2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45aabe56ce758280dc7ff0ab8f9fbc28dfbe5f4357066596b20eecb5006a712. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SEVGT2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48a935ed5d0eb68463038c5adc83738f43fc22d21fdd94d7c36112407051917. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:57Z), 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/SEVGT2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9738cda724da87f069f3f546707533ec4b2695b36743ffd4fc9da66787a795. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:05Z), 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/SEVGT2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c221a8efe47e81755f114256fbd9511b81052f09c20c20d73e073431c72d4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEVGT2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfcbb13241fea05f154a1a7006ba4218ef2446fd6e9699e05a643fcb33b60f5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEVGT2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d33f1ecfae2e2ed0f57f1af9e7691e99a3dbd888382958e1e6c512b2f31e7a4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:16:11Z), 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/SEVGT2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d94380400ecaf4ae5cd52c11f2c0a96f20a19fc549b58db599c27227b05a683. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:09Z), 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/SEVGT2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda92a2d5fbfaa0ca7e780163caa8564c48103f45e509c7a8d6473ee5fa3f0b3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SEVGT2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b3b4e9484a94f0d847049a0218bd8d587ae1e0cc25aff9af575d592671a15e. 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/SEVGT2400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1088a32f316131b4ca636da43c0cdc38d9da21b9fc6eec4b2f85a5d5c6afa518. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/SEVGT2400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f66707b4aafdad365e35275cca1d27e74294f33df0e93d29a0698bc6aadabf. 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/SEVGT2400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c575ed2a1b0e81b9c6f0c82e1695f733dec0add5e586275156fc56922a003a. 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/SEVGT2400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45f407e53ca87062368b42ffd675a07ad0b9a4f215710a0e3f9671607064a3a. 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/SEVGT2400188.