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 0xdb8633965c8ae692bbbbc00b0d3ec216c49a56b2b31fe845d976005efe43c4d2. 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/4fac4999-ea8b-45fc-b20a-6fb5da2b42ee.json and https://artists.proofprofile.net/proofs/artist/4fac4999-ea8b-45fc-b20a-6fb5da2b42ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Salso Lo Mejor - El Inspector de la Salsa, Vol. 2
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 0x591da8dec7b10f2954a6be93e4356769720639b5e35a4750d1172140f8ace5d3. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/MXF550513618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23043238d22b10cfa9adf2eb003f05f03a975103bd869dbf05eaa90a092463b6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF550513619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bbb23eac1ec6094adc87df572fc1888bd98f67aea7fc6edf153798ea0f5d87. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/MXF550513698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abd18ddb4cd6574b6c771229232cf3264b81e31edb2f9d624a01ffcd58b0695. 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/MXF550513703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5617ad5e77d164ef9f61c9556e4d9abe38be16737c03d1948f2e5ed7709ecfa3. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/MXF550513611.
La Murga de Panamá / La Guerra de Los Callados / Rebelón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1616115ab6abc3df1de68ca080d2836b82fc8ee1c8965b7ed8bfe96e60b03632. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/MXF550513613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1a117c0ce48445a9a93ed148dfb3c521139292eeca603d027018e131c0d6ae. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/MXF550513614.
Cómo La Quiero, Cuánto La Extraño / La Tengo Que Olvidar / Cada Vez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55754c95d0d1a804e8ed91d611731050a05891a80a2f16c3bc60e51104e70996. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXF550513616.
Salsas de Oro - Auténticos Clásicos de la Salsa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6467787fb81e00097ebbe56bbadcd0ce9d81f3c2a07cf68cf1ccf9ed7933c63b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/MXF550904154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608068b1e80c3b1547cc51a4882352a94e4557c550281897dec0575de72db20e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/MXF550803403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5368a35ee03c8569e7d201f4d9fdc1afe1e8d7e7da4dd53265027c25acbf66. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/MXF550900171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306d84e99782c973a27981233c3bb03eb0e8b218c835b0731adea8655c603e42. 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/MXF550900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4660e289c14c56a1736f4ffbeea9cb3d6d504e1ad72b4be3d696c60b55795580. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/MXF550901985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9d2a712fb78c95769d3ba8824b411ddf56dcc85c2340c69fd26bc24e42c991. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MXF550803408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f7229e8818e2eb3fd69a3fd97524498bb0b5e8febdc087cc79647c18001c1d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF550803409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae78995f5498fe81bcddf818598652f4f6c9c42ab855e1127e23fe20f65ba351. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/MXF550805562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0e13619153cf639d262ff15761b65942bd60ee3ff0589f9f19fbfdd223e667. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXF550805565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b24987c413ea94388e5ad2e64f5f184e4892065453fbd67f9d0293d83af5c5. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/MXF550805675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ce5bd877beec252a16c65893283e8a7ca0d9c10335ef1588342e2705088cb5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CA5KR2402966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc124b49c0c201a80ef9b9bb1e35236d2f14a4bbc00139eccf50f6f15380de9b0. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/MXA3V2427291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa289c56358a798d4dba44b25cd1af6d85ef2486cbf65b6df91b4e2c233ff7c3. 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/QMDA61497933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94e07c6537d0c9cf808e78a9a1934964b9187781c9c5d60e10ed851d5d7a925. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DGA062307926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419bed961db60437814b78497bbdea6adea97e53d3a001018a31d620b793fab2. 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/MXF550804996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa549c38b8c10d365c2ae52772ec9e2f0cfe95405395bdf6a3cf7b3d55aa9c301. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA062303853.