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 0xf64d34b466a15da37ed952f5879209695451015d5aa34076c43fca533011dc92. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d21f0c3-413c-4ab9-9647-a20aea4bd822.json and https://artists.proofprofile.net/proofs/artist/4d21f0c3-413c-4ab9-9647-a20aea4bd822.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Entre Copas y Cerveza: Quiero tomar / Amiga cantina
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 0x41452e369f3e842a34de63b3dc78d16f65277c3b0598f402b0af3eed1892927a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G2415254.
Entre Copas y Cerveza: Quiero tomar - Larga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876d0b6cce3e54a838068048659a960f7a62a1cd7eb7562862520403eceb94bf. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES71G2415255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8219c2acca2984384f6e0fae029ae8b313fbe31be8edf4ac628226da287c5063. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/ES71G2020215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b092f5d012ec6660bc44417163f06d68c334049ceac5c9f5c1e50ac67c32eb6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES71G2020698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6e45d635e90fe3bb22a6083a8dd262a56b241c9f9ad07fa239b6d5c04471e6. 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/ES71G2043764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8bdf462500d77dacbb124acd97842581aa2073a14061e0cbdf14479ff8682. 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/ES71G2059436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c16d719970ffccea79c4e6314ad4e0653174a0df78427cada85ff42326905a6. 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/ES71G2020113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d11db490a25f869ba9ce7a936f8a1e0adbb3b77036939f874bb92ec2c615f2. 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/ES71G2234257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af7e7cc3d4469ba69e2d3ab220b6d189fb246cd3bdc85404f192792806dba86. 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/ES71G2234258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d03671d09ad210824244c558c85add010fbedcc0ca861f613a5d36cea460e3d. 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/ES71G2234259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb6ed05b48f494993a1dc2988d90e218ddeb1b3aae311b22fab75cb2dc9e5d9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES71G2234260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9860feff9ef3508c7e89fa2ce1525add350466c4fdbf9fa2b47319fc8c3dbd3c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES71G2234261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f8b59445bb94630ab8105c58a2f57ae84d40603587ab49c589444638c7101b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES71G1859192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ebdf97359230060743d7b374539bb0060036fd4761f4ba744373f0f6077d0a. 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/ES71G1859191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f0a6ab546dc30e120d3acc68ed8e444a84cb8acb3002e726f0608e23df68cc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES71G1859194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10e6fb7b9b2fb7df23c72ca4493f4a383310fa472fcb341992b33081b47411c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES71G1859193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e20b3066b445a2125f64d394375dabfb9dd3589c4f15e1c95e0639b8ec0fb65. 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/ES71G1859186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa930256041e05943032606e66622872c820ff9d6d247435f474c935e182890e5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES71G1859188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f9f487a301a6835ae21e01c7dc7f6bad050377b6c9a29319c148d59511d57. 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/ES71G1859187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98f37953757065dec251d61670fe301119d734afd4308f096c1dc224943908a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES71G1859190.
Traicionera / Recuerdo Aquella Tarde - Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9321d9d547998f940a2def65fe21d2a1dad718023d26d5875dd3afed2775488. 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/ES71G1859195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d30abd27b366b7fbfe17811cba5861b97609bfbffcd78d6ea6684111ce478e. 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/ES71G1859189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2906bdfa09746ff1b124415bdd51d1862faa6e816406bfb7bb0c4601f4893b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ES71G1859196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c66193b918eee2f9d623c609ba083192bae6ee590701f3faf4efaa347391bb. 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/ES71G1859185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bfacd3b17b7579209ee3868ac32ec03dda566774934836f65aeddca15524f5. 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/QZZ7M2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991050b8b428e45c470144bd452c5407a99538cdbb68ae0da6a59615cd7e9973. 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/QZZ792450359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4b1a0ca901c493f2ca0b60ceead534e24390f01327cbce3235752d66ae5f2. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES71G2402641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcf79cfb6c6de60dc311d64abe7483c2bd872a22ffcdbd8affe2d96523054e8. 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/ES71G2328439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa3039a66b298e5c2b8d7f719a28d2360b1b038dfebaf8391c01fec6610cadc. 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/ES71G2236509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6377547055d7b46201466ab08e31c0a30a31d5c42cbd3a3103cad240b328cfd. 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/ES71G2236508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78730424fe782ef2ea1ac17ec4a8f35e75684e02a1f9ff6ee4559f032d6851. 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/ES71G2236510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8bdf462500d77dacbb124acd97842581aa2073a14061e0cbdf14479ff8682. 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/ES71G2059436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6e45d635e90fe3bb22a6083a8dd262a56b241c9f9ad07fa239b6d5c04471e6. 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/ES71G2043764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b092f5d012ec6660bc44417163f06d68c334049ceac5c9f5c1e50ac67c32eb6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ES71G2020698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8219c2acca2984384f6e0fae029ae8b313fbe31be8edf4ac628226da287c5063. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES71G2020215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c16d719970ffccea79c4e6314ad4e0653174a0df78427cada85ff42326905a6. 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/ES71G2020113.