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 0xae4441d441787f1e149061ffb17b0a2263924e915cca2e9fcba98f3a74704576. 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/90b29dba-1e09-4669-8fef-c7306043364c.json and https://artists.proofprofile.net/proofs/artist/90b29dba-1e09-4669-8fef-c7306043364c.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 0xd0df8dc280cb2dffc4520d04711701776651b8eaf8d26586f971bd57ddb84dc5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCABX1416672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4eb8f369472586ec4899692ce460055dcc56b7211f60f9af4ff03b97ccc2c8. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCABX1416681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12790c62060df227a6ce3a7da5983bf141bbbbc2930038526861760acb96454. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCABX1416684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fc352d0067cb74e11e7772fa07351d40a458f5087b5867c2b9ced113c13c67. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/TCABX1416686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd370d5afcb42ba929cdd5b45c2fa35e5918ae37d610c784f257d71aa4b6675a4. 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/TCABX1416691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc0e4ec17946f451ba4db0810e6fcc2703d5af6b77e81dab134cf80cabedbd2. 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/CLGO21500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7802f8fffc740821a2050dd7bc10c40aa7463f8610c216c118fccd10ccc33952. 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/CLGO21500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dada120b893f2fa4568acf2940e50ab4e1777171727e2af281516fffa407d5. 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/CLGO21500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4480fd387adc1b18cb2e510c7b7aa63a2e709eb685ec8d7422568feb3e8a82f. 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/CLGO21500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec62ebd39ef320d29d7f6e6d87707ef04e5a85193b07d2fa7490434cf3574a. 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/CLGO21500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0fac5a0a2aa94449d57760691a32c0f2ba0b2afb69ffa45d4761f1e0c4e35c. 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/CLGO21500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef35c5dc8af014ca76fcc972852d8857757dd54bc5d08946d24b3c2666dae4d3. 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/CLGO21500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae003c23c1fe42a9f1154f757a1488366116b0cd254fac77c4b148944039a54. 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/CLGO21500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3893c683d550ee97de101570e22b15d16475408137e10dd044a3a5caecacdca6. 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/CLGO21500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a0a4c67ee577ef49e5b2cb9c346f4483836102e7ae80e624fe2e18933c47e2. 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/CLGO21500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a994580e7a40184feea0b95ed3e03cb78347008c9601dec044e9288fe55df5. 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/CLGO21500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fdd55aadc2a3b5d90e2487dca0446a1aed3bdbff8d65efe952620a90b7caa6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CLGO21500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe371d24642cebc80f5a1401b89d4a8f301b7ae592e6ca0917fac694a6eab2881. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ES71G1754218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc979481fb657677fa724e857333fd152da22217a926f61c73e1cd530bad1e1a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES71G1744080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5d96f4e213d9b92912ee0b98a51fca67fbcd2a81bddee9e85730234a7c383e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ES71G1754220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3d0f4d897e056c67c22d329f30da48213754c12555ed64ed35198aaf45da42. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ES71G1754223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a92a935599635e50feb762fc8adb16bd4e9aeb81f3da9a8553f7df514934cd8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES71G1754227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172bc2dc12ce67ca987bd4cbf32b4a0386cf8848f76a37b3d16f188053323f39. 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/ES71G1754225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e239ff8071d8869052f0fc704643e5fde9cd0079539c45285ebc866644e96d. 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/ES71G1850569.
El Dolor es un Momento. El Valor. Es la Fogata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450ebf9f8b38d88174bfb0bd1fb7429b77d9329a7afb2b7bdd03a77b1759a659. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ES71G1944916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef674542266be92014010c33999698196a51031d2633212ef9320adb5cf2501. 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/ES71G2312246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98885ca2b709cde3f56ae60a0c9515bbde40b543753affdec7238888619be005. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES71G2312255.
En el Centro de la Fiesta Está el Vacío, Pero en el Centro del Vacío Hay Otra Fiesta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824dac766862c7d27febf01969c57436c123628d5b59454ea9af7e08544d60e2. 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/CLNV21800405.