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 0x7bf2c44a1966b7a58b1090517e63940240205e9136edf1c1383f1e706b0ff199. 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/5d977790-4088-4f4c-8c60-113a9414f27e.json and https://artists.proofprofile.net/proofs/artist/5d977790-4088-4f4c-8c60-113a9414f27e.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 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 0x6e4fc33e6e2fc36047fc30316b70bdf024de1f0bb6605e70cfed8f0da7de7dae. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NL80T1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4fc33e6e2fc36047fc30316b70bdf024de1f0bb6605e70cfed8f0da7de7dae. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NL80T1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53926c8b0ff7c8c9e68b69e7daa3c3f2091b79d9a946d50524c5cc34a0a50935. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NL80T1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cd5d01446c7e510f30409371eeb743b8be202df558baa84db2e831b62374ae. 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/NL80T1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbf64b27161542f81beac3a922635df787b5b7b7541ac914f91d5d2ad50af9a. 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/NL80T1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c201ae0d50eb069575cbac393c4bfd45a255c97dcf3fc855001dcbda711169. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/NL80T1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5633e0a737f15fee8ad1f9f04b2e4fa4c9fd6f3c493ac7f79ea7d38623c91df. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLDK71900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8e1a47ccc3c52f5e62f6943e5b0e868b5860de936c1a6690fef16f1a68b096. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/NLDK72000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baacd13df2193d9f541f341c0960485a53110c3b83f67e0a849a22be36f5155. 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/NLDK72000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baacd13df2193d9f541f341c0960485a53110c3b83f67e0a849a22be36f5155. 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/NLDK72000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a297deafe2aa4d67e147873085376e6e002495499ce06c28a76ed82e47815. 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/NLDK72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8e1a47ccc3c52f5e62f6943e5b0e868b5860de936c1a6690fef16f1a68b096. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLDK72000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd414a1989514ea530a2ddfcf05703e7a87e957ebae8929f26d96067d0afd2d78. 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/NLDK71900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8183fa31bcc0430afe098249f64e679685ef9eac4e71f9333346e202610e5f13. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NLDK72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2122e7db1e108fc9a4cdcff1a1da54b6af6459b44b12138719ca3b7b4ef3ea. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLDK72400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af027c1890dd6d5df8e1b4df4eb5a627a12add21272462f50fa819a2c266861. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NLDK72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c75463c7f91c992c6b997786b8ea6a11f079645656072916e40b339226877. 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/NLDK72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e9d7c9c7ff43e29b6ed210e887668650c73de8f19ba5b92ec4bb442dd2f61a. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/NLDK72400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82de8ecbfc84ae2f645415e02ba05a3c89e653859d4c6c51ede7ecc5f14238ed. 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/NLDK72400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee636954799e9604dbdaa1af8ccfbd59934096ed74ee11628b5f21a7a476655. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/NLDK72400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2510f78b24279bdcad2b816e5b7f318fe2308ae87b2b4230054e24a9c7c0aee. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NLDK72400013.
The Promise (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271fa831be41469d7cb7f43b6b754a0f8afa083aea9afa058e75ec973f1dd966. 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/NLDK72500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be4f854963905f7ab77232d7af25cf4ceec34a3320fc85f083af42d673b62a2. 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/NLDK72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931e58ccbd809c509a2c0744dd4a2e4cff1aa40a40fba65aad2a0c9178d6a3ab. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLDK72500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a34a3f9e17b66632ffbc588bc23236272a5d0e76cb072a36e94a55f1c7db1b3. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/NLDK72500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b204309dcaac52f0e2d703e8e37b7711ace65d9c1894078aaf70f347764156. 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/NLDK71800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cd5d01446c7e510f30409371eeb743b8be202df558baa84db2e831b62374ae. 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/NL80T1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b204309dcaac52f0e2d703e8e37b7711ace65d9c1894078aaf70f347764156. 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/NLDK71800001.
Musik zum Entspannen - Klassik zum Träumen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4a6e6571d7d9dfadfb8424d4700ed00098cca2a6d3ad5aac4d5a88d9878891. 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/NLDK71800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5633e0a737f15fee8ad1f9f04b2e4fa4c9fd6f3c493ac7f79ea7d38623c91df. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/NLDK71900005.
Piano relaxant : Le meilleur du piano classique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b204309dcaac52f0e2d703e8e37b7711ace65d9c1894078aaf70f347764156. 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/NLDK71800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5633e0a737f15fee8ad1f9f04b2e4fa4c9fd6f3c493ac7f79ea7d38623c91df. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLDK71900005.
Classical Piano - Peaceful music to fall asleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4a6e6571d7d9dfadfb8424d4700ed00098cca2a6d3ad5aac4d5a88d9878891. 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/NLDK71800002.