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 0x76a1d378ebd53293d17d345672dadec3591e9631ff399a987412b011f7f86c51. 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/7f843947-e9f8-4449-bd48-3a516b398374.json and https://artists.proofprofile.net/proofs/artist/7f843947-e9f8-4449-bd48-3a516b398374.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 0x6fd44d875b65de2d1db812ede23c9048c763d1619fe9d2d61ec8bcc4dd7f867d. 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/QZFYX2146641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb628652a0e4491b6935e59773e58fd799c94e9c9247817b1a6b6bdc51d61a5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYX2146646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe11a306c3e166565c738e91d48863d05f0aa1b385ad2f5c50b26cfdaa953ed. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FR6V82467038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0478e20903b490db85a6016dc34cf83cab284b1b3c1e6f749b442ffdc15ee581. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR6V82467039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f401d0ca24b8133b124dc1227917fa41854e739238c1f85882ade932e1b6ac8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FR6V82467040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb64dcf259bcd86c1d771b3a8e61b0c0fad6e9ceb5f7ba86ed94ac0b3e47e528. 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/FR6V82467041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21449a5b53394bef96ffc9369f380aa9d65283c116e1dc72746ae28fa596d6c. 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/FR6V82467042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bdfc2f66da107956aa012782555f797135ac156498d3cfc7f56a24effb4435. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V82467043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73341cf573d2063998c658d8e6c9c45137358983d862acadd401fee3a1ba941. 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/FR6V82467044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f31674b53503af26e452de86b3bf0fc78ba4a86af046ca9ddf5d00c2bcc1de9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR6V82467048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00515bbcb46a84e98c4067c5432ab3b3ff9ee50d3997c899ad50b22ecc9988e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/FR6V82523424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4399a2dfb14f7a9175fbfbf0bc05fb0f2339353b69cee2409f315be9c6e5ee96. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR6V82523425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47710013bdd87748854762dbd4c0303a401a0a91755883d053639284acae1e9. 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/FR6V82523428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd20c39178b24d8077a1893bb89dbe65aed3aa99d001c04439c4d5ea8d38783c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V82523429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38248d49ba1d0823aecefe40210a675dd022c86646caa9ff209f76ffc5fdd0e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR6V82523430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05229719b51c2086fe630578fd6dd4f365a5237d3ab08eabcd3362d71f341b6a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR6V82523432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f627b30416a8473bee641d12b793abc94fc9300ca57b9e6f8396fb3f13eaa52. 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/FR6V82523433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07355330a026e56b349b062718ad4357ad23fcda8dcdec1bbd7f7650118c1f6a. 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/FR6V82672875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d8d7834181e48bfa6cf2f6b80f056c1aaa800446fb0341702208778cac76c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR6V82672877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb4e8ffecb248af984a767a10d67274609f3b4eb7dd573773c80021e58bd8fa. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/FR6V82672879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082933c9bf91169917b931f6b272062f031874df70bcb10b71ef864c657b8ce3. 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/FR10S1423229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa28d8ed3f37b83291f8b530891a492a340cfb161f701e43a46e807ba14f152. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR10S1423230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638b54a0322bd590e03a4936ccae82b217d7231349786a8abceb93edc6bd028b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR10S1423231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b1625ddc5e391ca5ed0444055b857ccd7e0e0a169593a51693883a63a243ae. 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/FR10S1423238.
¿Por Qué No Se Van?: Tributo a Jorge González
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35129c1c5854277885b69b051a61d6489d841c3bfa16788ebdc1fcf300e02d03. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES82141388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4366628bd3fe30fe036392e9d7c9e6e357d80129e6efb13386bbfbfc9ad82a54. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZES82141389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c8a8ec2087730d9bc413d9422cebb365a8e4f6a73ae0b23fc8ae00383643b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZES82141402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc2f0d3f24fa87a23f13494035b82569314a18fdfb677abe560c99d80d94e02. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/FR10S1459638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2632346d0119808b67f1afa9a3fb2214edaf65f21395950d6b0f34d24b6817. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR10S1459633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28be5a73db6a28bda1d7dda1141b9de9bfedce5f7c1a120f4d3096d6db72b0c4. 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/FR10S1459515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d560b586d7e9fae26295e79fc01f521c56d7fda5b546acf5d6b0396ddfcf9a8. 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/FR10S1459520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd096e60699ff800e3634c7335cf93db8524a390059bf27304f13d715ee71b229. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/FR10S1459604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589604d14c6ebca14ac4fb96ceb6ba50d21617554bd3d3fe1fc3f4f99e1feb9. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/FR10S1459615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570029a08f55575cf1c97a924ddc2d555b2a9f65e3922212ad5bbab2677ae2b8. 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/FR2X41437555.