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 0x2a5470d6ddbeae29fabfe3f3152bebac4ccd234cc66c0f17b24372b2a45c47ea. 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/3c752792-bbfd-433a-af81-dabade2373b8.json and https://artists.proofprofile.net/proofs/artist/3c752792-bbfd-433a-af81-dabade2373b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ya No Escucho Tu Voz / La Ilusión Hace Canción
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 0xd0e101b0e1cb103356fa3ca06e147d501e64891bb95d87879e82e117ce84c2ab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES18B2302763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0a411f0c3e6aaad938902857822f1e7a806de450f0b43911050df82d13becd. 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/QZXLZ2360093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937d31260830b77845ec2d3b5b2cacabf8c2d944338c19b7d9b4677f893fc568. 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/FR59R1661811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f430af3a4de3c4434040de0ea9ab687d97e01d252d185766ff647553ad39d8a. 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/FR59R1661812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668c7744e88806c64a326f9d1653f9f061037f584f02cb6cafc72a3f0e421fca. 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/FR59R1661814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c00681c0772038377f7a10048c448cbfebc06f6836819d011930708c78590a8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R1661817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2e613ce189dd090880b8008b94d5db88bc563919c3a6265538532678955ba5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR59R1661818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8919adc9f7808b5dca176782eed14610a1f2de2c0f670dff1f50cbd08ab4c44. 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/FR59R1661819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b94470c0a4be8c049f8a91a33b309f65419b19aaf245a5fb281b3e74c29eca. 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/MXF550505767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280aa91d5f782d28fbad5903a31f47a9a4a579236a09548976f8c1b49b56105b. 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/MXF550505768.
Electro Harmonix Presents Más Rock and Roll Vol. One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4d04808e0b3002ce1d68fc17d4884b3dcf3ecc31b53065a0fb8a71fae4264. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMFMG1310798.
Éxitos de Siempre, Vol. 1 (Música de los 80 de Bolivia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ac91649633e363a64c63cd1fb53dc1b0665b5de5b232cbed8586721f0c9c31. 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/FR10S1753591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8387b6d1d58e8b01a349c45b4a3cd2752f20b423f6d482af5f9f398d0d7d9d54. 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/FR10S1753600.
Exitos de Siempre, Vol. 2 (Canciones de los 70s y 80s - Bolivia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38accbb5af8b5793de1ba68b5ca2f05f3374d7d3b02a8fa1fe5d9c0a4c138ae3. 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/FRX761546553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ab7ed125a16a5e0d99ca857636504ed2a0c0c33ef48bb072cb0520fd1b9f9a. 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/FRX761546563.