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 0xc292b193ffb17914876d4c29433235888128761c2c8dd45f37d7d43ad326ce74. 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/00cb4ff0-c968-4624-9591-cdd4cbda3656.json and https://artists.proofprofile.net/proofs/artist/00cb4ff0-c968-4624-9591-cdd4cbda3656.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 0xad61e4186822729c8aaa4e744e879d6039fae16c1d656fdc8235c23a4c050f0b. 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/GRS018500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5c2ac7714dd784bc8834dbd4ef419bba89b94454aff235c611c133670b4a8. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GRS018500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deaee1738f776c53f0b755275009a37fa5b34aec7ec1405f3b574ca171138ad. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GRS018500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740c8a2d269db8f97e21cb37c49bb0f09ceefc3d3ee0518667fada6e9a31e40. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GRS018500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd7287982615762bd887b77cc9f8b61e1dff664a24edda059f9f3f8f7e82720. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GRS019500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82ef338ed10f5c4985c40cdbaf368d50d02a3c9ef2465134f15b15475da125e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:20Z), 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/GRS018700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347667fc6addd0eb185a724ef4783b193c3b6bb3122cd6b47f6c4a8220463436. 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/GRS018700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6fa5d85fe15b9f30fc24796114450f5fce9e88ebef32dee59e89432d7ea729. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GRS018700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3c0f0147c93cf542aae98f6b22fb35d30086a1f2a299ec2c18fa4abb25dd97. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRS018700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a985be047eb9c9e2c44969d45b9a7a31cebbc669481fdc20743d6e82d2f8aa7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:23:43Z), 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/GRS018700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655ac1afed42ef090c62bf38fcf83335969cd74904baa58b381385f78db4c980. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GRS018700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f2c280bc061865a102d476c37f5b9f48cf6aa811e813244997b708af1d4236. 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/GRS018700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a2f252e6ee82fbb884d76115cf01de82ea754489080fa1ef5a04e6de84363c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GRS019100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c36ae67148ea3c60fb383fb9519f6afb30e0e10c4f5fc0d0be13930c4f8d6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:10Z), 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/GRL016700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf9c4a08b479d418806369dd1b753235e5d72231ca4a2817f5bed049d5bf8f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GRL016900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe2960b700b48259c7a35cec810cfa56d859f05572fee832c0eb4976482de5a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GRL016900030.
Romancero Gitano Tou F. G. Lorca (Kai Tessera Alla Tragoudia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a148d27aecb339458a048b09bc1c1b094dc13aefa22ba45fb6369770209b24. 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/GRL017800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2f9565351a57210205cc251673bf8881455feb30ed32513695515152ef91a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRL017800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a1db1e618851df0d3d7408a0cc8b88c9fea333c6c99bda9d7db75e84a5794e. 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/GRL018400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19e45f53b6651b36bddabed65a9cc8c75450a7cb0679578072d3b513c604dc1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:27:50Z), 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/GRL018400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a71e908ffed7332f5050e6ff5fe2f2f6adbc7f78a83c60052b30b75af06ab3. 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/GRL018400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443ca9cb2abf3b032f217196038f55478e9191fdded99fa45efe7e4d62d671c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GRL018100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283a147fe9954b5258d72184541ba8d224029ac79cdb83fc6c092b9087d844c9. 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/GRL018100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe687a60a8e8680aab0629035962f4b36ce182ae5b46ae20974519be1ede165. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GRS019100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd74307ae7dc86179422065f84a4752b8131d7d741ebb2e1b55d946807918536. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:21:29Z), 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/GRL019100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cb34f2df38971dae08576becb85fc6f6982dde6e51c070be0cf8738e52ed49. 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/GRLE10902320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b4a13de4b04d31d06c8c5da55a8330ea898ec5bf4967ff519b3f6f0a1ad7b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GRL019100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef338d0578b83a483c35f470e8e0f93e3b39b543fd8e96125fc589f9cf28c7d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRL019100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd74307ae7dc86179422065f84a4752b8131d7d741ebb2e1b55d946807918536. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GRL019100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a681ac7ec46471fd9d70d70f4ba3cf9d7426d9a5dade81b96f5b15facfbbfc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GRL016600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dc5750141360a9eab32a34577e24693af914cadb297414fbd04558cbc1be93. 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/GRL016600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8dd5aa46920946b1b5a84534d6a47e1c1cebc8723eaa06ad416c3f4fa0b9f6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CZUM72100935.