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 0x98004e101cda65b5375d781a5bad9c1d12fdec4fffc462dacd1abf07167b2335. 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/9f49aa92-64f2-4869-a328-a2343d8fdbeb.json and https://artists.proofprofile.net/proofs/artist/9f49aa92-64f2-4869-a328-a2343d8fdbeb.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 0x49ac9dc1fe8aaefc835f3bee572c4f74dce6a0a7dd50a6f538b9e6b8be89de2a. 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/ES8022200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d56f20a8f9366e49646d6b986b8dd2260fd8cd72e76c1c742e82b62912e056. 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/ES8022200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341475bc867c6b0c2256a4c77fefc1a16ee7ff4d9c9fe84e8cf3fb1be378825f. 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/ES8022200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc7d5c2456fee45b54c286bffc3ae9496789eb7910a3e5452cb55106a22f279. 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/ES8022200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808da2d844663cc626461e5f083d3814f8198d2ae74aa478fadf89b258d795b6. 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/ES8022200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d8c55ca1da87a58318e84eaf67576343d14123bbc99eeec86e0ea7207b5c8. 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/ES8022200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5045d733ae2e9c313797ee78ae47f5c8932063426b3707f351895f91af38e3. 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/ES8022200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656b8dba6d00d15ce8eaa1cbd9352e96190ffe4713310e0695b1457708534473. 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/ES8022200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2853ef1000667220cc6ea473c7a542aa1a1526206edcac6bd5bfe20e989634c. 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/ES8022200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb1aac7d0494d53b6a54f72a07c06fe2944a650b6b723677bb04625b135a32. 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/ES8022000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e3fcad4bbc24db373d88907c1b394ea72ffb4b33f392623a7c42a4eeb2524. 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/ES8021700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bc038e6166e48a5ddce53f1fdf839b3a1c9b5ccc16552cf5838d4704ccc6e8. 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/ES8021700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b86683d85f14072406c295b6a3b33b2124d1e510df62ffe9d2c7b2177f8bf36. 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/ES8021700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77130de3c87564521fdb3b2154fca44fd466c30724f866893ee248afa4572724. 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/ES8021700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81097576deed710055e52b002dc63e3e69bb82ae4a0edd16c9db5d8d3c30b0d7. 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/ES8021700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4fb537ddedf32cabb06d78ba2c07e4b64c59f42caca795eaac3e04dbce86dc. 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/ES8021700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e78f9df9a310eefc86789f0be58382e64ff307e7168b22d8129fed35368393. 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/ES8021700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5b97ef597d7c333628576550f2ac7164a59e69a78af599ef8ab6275d31fab1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:58:06Z), 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/ES8021700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94328dd90b00dd5a179ab43fd201f5bcd345dfe86ff51f54d052b5fd66fe5f47. 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/ES8021700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110c55fa636e60fa70989b32d637bf726e8071cf6f6aa8a1bc669482c57cae23. 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/ES8021700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c1120497670a2fd6495446ad5c44ccfb891db82957894ea4f24bad155b1732. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES8021700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe670d09201bd67f817f18bafb52c7b37ce1c985556105067f8034385579428bf. 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/ES8021700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421abff7dc9fe62148bd8a9a4fe2f3897f5afa54e787fe9bf4fef61d54a426ee. 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/ES8021700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c798b2a1483d040b67272059c87af0120f126ce4649ed5c74b5c35188544c9e. 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/ES8022400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe1600fdd99065dc65358277669b68a5e675be0eb6140aafc8a0644e1f92db2. 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/QMFME2325096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4846a03c324c7b0e963a498a47d77b0179bd247970f96900e7a41698d80cd4a. 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/QM4TW2321599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d56f20a8f9366e49646d6b986b8dd2260fd8cd72e76c1c742e82b62912e056. 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/ES8022200101.
No s'apaguen les estreles (BSO La mort de Guillem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb1aac7d0494d53b6a54f72a07c06fe2944a650b6b723677bb04625b135a32. 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/ES8022000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf246d262b85c9c41f2e1598ab5e51b85257752d03631ad8ebe440ba846f48077. 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/ES8021900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55664b7f5fd94b86ff453b09581d7e2a6959c28560e3cc7bd0a34a95150bd335. 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/ES8021900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aa92fe4301f5c971b998883025e5ee711fc48b1e5a3b50fe16ac6910ad3917. 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/ES8021900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cab4965837ce66aacd2e07e2e30a3f99c24db44f760f68ed84a3be4cb6fc40. 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/ES8021900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6471e6c4f5382fa1625931601206bcb1466f903bd5ab04fdd380cf1cb0323f55. 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/ES8021700800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c5da857442b3e191d464105eb04e102353708eb25799d80603c7a1ab653e74. 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/ES8241720207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91c3060befa518b650b5ebc989d29262254c62412db79430827afff4592e61a. 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/ES50D2200002.