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 0x8049c800fbdcda843a448b34da2046cb577d657fc9f9f069931eb13f2d0cfb43. 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/3c824f9b-18ff-41ea-ad51-f6b9e4944c9a.json and https://artists.proofprofile.net/proofs/artist/3c824f9b-18ff-41ea-ad51-f6b9e4944c9a.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 0x804b4ddd1617257c06c4d9a00b095d63ec37a541b49f8dda30ceebfe119b8118. 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/QZAPG1804024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0054dd97eb6ab4c202fad2a9f7d35a1fa02452eb6db70c6602ff652301dee6e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QM2PV1898461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8835b92e6099f9da2988cf015a6fe345464579fcddc5ef79077b1d8362858c8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:25:45Z), 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/QM24S1911574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a36e647098c0749e72a954ea2e4e89055257e5046702177db7352179fa8f07. 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/QM24S1924033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa820eb6d92ab378dbca5cbddaf6b9ee71ffc731ccc6e344a7c021debb9bd5426. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QM24S2003009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e57953b19a7d236f586515fb9c71f3a7fbe879cd9b0a80db2ca14f28731e13. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:38Z), 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/QM24S2002924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20637d6d9dfad7328cdfe6fb3666f58977a1cdb901a3b9fa644fc9f8f3f2e3. 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/QZFZ62296609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddf6514ff98fa3d1716300e163eb0d1e00c33e7b5fb851e4e68eb83c2210eb9. 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/QM24S2204263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ec56d1e161656f8f0f6d0052986c99b019ffa16e3130db80e01c87d67ebff0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NL4WT2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc0193d630c1fe7fbd93658038b42dc4eaf5ad42dd59de82a540313c6b89436. 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/QM24S2401908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91880f433b8999ae9e999c848141eaacfe56a20c864e037016f48c1ac0c7ce9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:10:54Z), 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/QM24S2406818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0a55274d81d4b7e7829d9c0d3832d49ff8d291c12b7561ba7c5a5dc12c7eb3. 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/QM24S2008146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d5bb22fbf3e53750314f034b5bb3579930f82417549df843e061b7b991da01. 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/QM24S2105691.
Apprehension, Pt. 2 - Luis Álvarez Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4fe7013f5f4f86a4c55668c571d61dd7e945b23cc33e41be85e770c125bf11. 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/BEDV42000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f399e36372ce24e67d83b32b8bc427097dab2c511d8f29653690925e74aa6b4. 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/QM24S2307198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f399e36372ce24e67d83b32b8bc427097dab2c511d8f29653690925e74aa6b4. 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/QM24S2307198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a36e647098c0749e72a954ea2e4e89055257e5046702177db7352179fa8f07. 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/QM24S1924033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af3ec6fc482fc5c36635642a8d09a3ce2a06579bab9cc3feb3c0e64808cba82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM24S2101767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681e1ecdb795e9ee6791c0d5e9a148d5ee606116be2c4271da8759789078aa72. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:25Z), 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/QM24S1912570.