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 0x768de47447070a4edd1b05a53f664a3d56c5b8fae3f88ae1fcfc907ab4ff8d61. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa96d7d3-827f-4186-93de-a56e3f56818f.json and https://artists.proofprofile.net/proofs/artist/fa96d7d3-827f-4186-93de-a56e3f56818f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canciones de Cuna Relajantes Para el Sueño del Bebé, Música Relajante para Bebés en el Vientre Materno
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 0xee0f3bbdb36b0ee2a300f2d21bfe4300da463ddc3d4d4cf627797ebdcee6a45c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/ITK262101473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ce2c372ddce407506509adae4d39f966e8525b489c7eedc419da00e965d804. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITK262101474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208c9dc5ca28c59b4949e5b044c7cf7921f7ba5a11ce3fc94f2fa428a08cbe3e. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ITK262101476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c48998f01a40b8796edd4b12560cec1a6300e93382783de262eee5caacd131. 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/ITK262101477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a064d23025ee5648b122483f1a375db8ac64efbf6e8e251b26357ed95d9177. 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/ITK262101478.
El niño pequeño duerme en el jardín de infantes.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dccf09f697ab198001b959505a0516ae4c4258f3239f289ae8756dd87aff4e. 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/ITK262101479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11870286560319705e8a35e7d9de204fcba0d724ed3dca85b615869962a4acb2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ITK262101480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80419b5c8f04bb296745654b04e4d4c552b6bf004896caf24a7c0332734c7f8. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/ITK262101481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d343880530b0d08123833864d84557dca6711c8a8aacf32ab4aca877200eeca. 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/ITK262101482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72c97f5bbe9773c81688994bb5c4608dc45ddf32d498853d35fd3e4c7479c39. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ITK262101483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852c692cd657f81f7d2db53050d2216e8fc997b54570fb5cc78cb4698797139a. 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/ITK262101484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2563ef1fc1b6e3177c4a4e4f84d461f11a13837dfd1ebea7c93b519c5e9b653. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ITK262101486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0f6fb3b2e23e2ba97bc99d8ee310c09c44b3973cca27538d42c20a08beb9d3. 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/ITK262101487.
Música para Dormir Bebés: Canciones de Cuna para dormir bebés profundamente
Canciones de Cuna Románticas Para un Sueño Profundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c00ec6a3843a64617d8dc714e67eb1957bec98a7681074e37fb9ea4d48a1a3. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ITK262103162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3fc84488274a0d887195bb5465f81b5150bcdd25bc452b09c281ec9d7008ca. 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/ITK262103164.