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 0xd0ac689e48c523def2675e7d5b5a0d4b520b41bd9218008d910b27b93847c13f. 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/2cd10ae2-d19e-4f16-9bbc-fb10b70c46b1.json and https://artists.proofprofile.net/proofs/artist/2cd10ae2-d19e-4f16-9bbc-fb10b70c46b1.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 0xc7f222318bbe552c7a5270f5e55b9b8fa999b4785aa0a59a4258c02efafe1a50. 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/NLX1H2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea45ec744d70bd2b617076acf7db964d99bdfcfaf1303220e0e022093bf4ed5. 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/NLX1H2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2711db6c84a7b0ee8c5d974e0761ef5c1d2255743b5c48bc05bb02b211c95a4c. 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/USWD12111149.
Als jij weer bij me bent (De Zomer van Zoë)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578a9d8f3f720a5fc6e61cf9d2c7e5a312490426a88d81f45d6a9fc1da371ad. 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/NLNM32100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f818b812b115695c2a64569bd32589b43c505333e552b6a0eff78717545adf9. 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/NLQ7J2000043.
The Lion King (Originele Nederlandstalige Soundtrack)
De kringloop van het leven/Nants' Ingonyama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520864c2d66d42f88e553977e1199e9fd3d2d4789ab8da14ffd6a752aaec6bef. 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/USWD11993967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b1d79cb6e0768a075ed04408daf5aabd0cfbd39121e9bb2fa12b43b3a1092. 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/USWD11993786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017559306b65fa56f2ddd1effd94ddf40dc1c5b40cb21315ad16ffbca0e05efc. 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/USWD11993787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2d9894820dc60be8a178a0bb4003d0be7bf2f136c7c2c0c02ce1fad49f399c. 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/USWD11993968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6793d92f2549c4a395cb9aa501e3d596b5b21ac259c7e8311694f1a94c7338. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USWD11993788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b124e8d42b896d361f6119655f39ead665dd575b739085ca38049f6ff93d2e4. 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/USWD11993969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1be98c20f1d7d194c2e0bb96b7c680f32a1cdc57de85d8b4f14ec86ec9881e. 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/USWD11993791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd19abfec432d6f6bf5083fd397da85d5fd8aee31ee8f4b4e98f6d4a27ba14d8. 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/USWD11993970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65161ed600d80433f032e8d95c32591fb79ec0c56a9ac886afa14129b4f6fcdc. 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/USWD11993793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b60e64109b2e4a9af34b72b5aee4c4a166901d894b08dec3f6c78017698947. 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/USWD11993971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d04cc89b1168ec95152d179f2a3755f862552515a402642c0ad684033abee0e. 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/USWD11993972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1a3db8ff266244e18b96f438d91425da9a89461d33cc01b142659d307d1926. 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/USWD11993797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b75aa9bf6112cfd8bc613c9bd8e3653ac05b57004d008f3608e642334e2a2e. 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/USWD11993798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953faa5d62921105d0750e48aaab41487f0afdaa3bb1468b38d738ce6f68baff. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USWD11993973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125756e10e77c16a5099da2e42c1abe069739416ae6b3be83817a186d32a2c35. 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/USWD11993800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06144e7bac0c31ea1ff782d5b58f2bf5555d0ba45846c3fcb67bd4d7c0d8db57. 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/USWD11993801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfa8cc6308424b3232bb9f84ebfc71edec41fa167ae4c4c09e746b88ea15158. 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/USWD11993802.