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 0x32db1f46a72b868cab27e8c1338b1dcc9f339455a20fe1270e78ccf6efb79fd6. 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/1a1c135b-b41d-4395-bc14-9b3d1096f30a.json and https://artists.proofprofile.net/proofs/artist/1a1c135b-b41d-4395-bc14-9b3d1096f30a.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 0xa3ad1aa6c4813603d64455eea0b6012e2918bd30f8e0b4251248bb13860b9f27. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USA560461100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfb85dcb7b291c6d22da71f4e1600595e1b977e96c187bb8dc9affd9635ef7f. 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/USA560461102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fde32dada0c0cf6a5c35742fdd0dc82deb6b8f3fcd35d81362b2253e9448a1. 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/ES6100881901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389dbd07619b3645212b5fc2b68805a710a9b31bb15c03a7e0cce60e300dc663. 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/ES6100881902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43946e92899c57def52fd2f197a2443c5c1a9fbfd2723fed9cb0bde6bbba482. 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/ES6100881904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf155e8c2bece282f288c151bd49bda780c7a4a03a54179783f9c1f67b906ee5b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ES6100881906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00059a0e2925a1be827872df1e5436a7a78ad23f2d757cd890e44e27fc84865f. 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/ES6100881907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385e38749287d0c56a5c04654abdd9608c3bc6c189ba2d2dab99e54869a64f98. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES6100881911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a72cf5c677a992cc2e086126cabb355a87980f19ffbfe1816c89128a2f7ca1. 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/ES6100881913.
Gitanos Catalans: 20 Anys de Sabor de Gracia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8fac70befeb73b7128db404fe246b989ae23e6b6ade7eec84e49a598ed60a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5061500901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba556787e70d8ffd384abd6d81afdf21025b4478a13bcb05d5412cec6a137a7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ES5061500902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c81e194661641e543d91edc0ff324a5531f12f1e97b5ce263e1d21edaf96530. 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/ES5061500908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e81b7d4f03d1cc40ff26db8de8b36d60c9186f2f000ebf61711ef632594dcf. 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/ES5061500911.
Para Peret Medley: Belén, Belén, El Mesón del Gitano, Gitano Fino, Gitano Antón, Don Toribio, El Pandero, Y No Provocan, Tracatrá, Para Peret
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499597555d8b8fd9ea158c098a5cb788f3af303492c8e56f420b7fac1cc17277. 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/ES5301766392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4352535ae957b83c4be13c9127ecf3c47fcd72d351944538ef2d0215dabb0148. 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/ES5301766122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9484044ea6c9d0f1242b13792727393419da444750dae921bbf5dd8c9c825641. 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/ES5301766136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8dee891c858b01d0e5bf70a414060e85bca520400e98088686b8e87c797e6. 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/ES5301766141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b837d73882c012b507cfa1c0ae3f6942ef6b3aeb02230f28d5b3f66d653ba0. 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/ES5301766127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d32bb336100bdabe3e28db5295d867988d1667941ef6ac35b13ad47be5a4da. 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/ES5301766133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8360d4eba66aaec66699de9fed2072721dce3473b6f4a5f776348d80af595. 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/ES5301766129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cc490e608ebfab58db42d6c1aa5627cbd0abecb0eac1a715bc49513054b616. 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/ES5301766140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e47fc0219d00df36cb37f61dca481a07787360baf6e80a0181608ec4ebc13b. 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/ES5301766137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b6f990f75c188fffba6a676ed76b0a0794f7c8f8f7af72342257e785c9a85. 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/ES5301766391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89944dc72fbd7d8a7fae86d4183888dec2612cc4b4d2f784d21592ce891a3a0a. 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/ES5301867430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b63cbda57fa8d2a940c602b153a495f0df5c20d8c0359e39e386b3c36ed4cbf. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ES5301867432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3490ec433329bd7388350d7a975dc7657c9b9b9c707aa0dd3993319bb6e524. 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/ES5301867438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30aa49bd81b7d1204d67b2894507d5dae3341f032e515d16c5b84eb86954173. 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/ES5301867443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ceae6fa985f371bed8162119ca6ce56a776bb43ea5d3d00533f6e90e9de2cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5302272193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d981a154ae47fd35df19f69a80214c43fe8e45193ec0624abaf6e24e4845cb. 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/ES86D2400465.
Medley Sabor / Sabor pa’Rato / En casa de Sabor de Gracia / La que se ha liao / Tu duende / El mundo baila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdc8857f20ec3b247b260b03f3518b88a5be080928f8efaeb1844d38c04fd43. 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/ES86D2400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d981a154ae47fd35df19f69a80214c43fe8e45193ec0624abaf6e24e4845cb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES86D2400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297e7b6177974614eb1625afdd975c9daf66f39e42dbc2f98a4967cfcb7639ff. 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/ES86D2400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02354939baebe914dfe979af457e047899ba2e1f5c365c5daacb43936a8b3b79. 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/ES86D2400482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361c1e1f1b0961a74cf848c9498298da62e454ebbf295c65a3b8186d0c24b3b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES86D2400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e1a1fa39eb222d70d8c48f88a476f9c4d53ceb6cdb1e661040c8cde0caeb1a. 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/ES86D2400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bec7bf50defcc27eb05e558f998f6e13fa00173f6d10881664333479752a14. 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/ES86D2300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccceb8d25e1eef3f32e3fb93d454521af01b351eca21adc88057b8c14cad426a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ES86D2500509.
El Gran Gato: Quince Canciones de Gato Pérez (B.S.O. del Musical Documentado de Ventura Pons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f75363b74d839f1be176437c69e5ea0917e0cd6aae73597fa4ec671ad03585a. 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/ES6100883906.