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 0x56bb16f6fc6c62865da32440b3dfd74ed115f7639b116264e2a3682f87bab8ac. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce8fdf05-81ac-4cc8-8e12-efe9d873eaab.json and https://artists.proofprofile.net/proofs/artist/ce8fdf05-81ac-4cc8-8e12-efe9d873eaab.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 0x2cd37fac1d9ac7567b2f1f579362b3dc45d6e7d127776c077ded991a4679dfe3. 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/NL7DA2400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44785950e5c7114f9b3c8f68ffbdfd7c9923fd284f89e05da13e24b069424874. 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/NL7DA2400441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e24187aaa06dbb1451459ee071bcd12443dc1a9ca3a1579060f0a30d642177. 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/NL7DA2400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23224d5c3654eb02b2db258050351414f382fca29037340cf87f0bbf76552bf0. 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/NL7DA2400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb55d4ae5d9dc601ea879cae725beadf95fc5641573bda9b9edd093bd939135. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NL7DA2400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109e965c755c4264960643737a1b863d36120161c457b41382568ff42e6bc7ca. 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/NL7DA2400444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735a20616914a77a5e057bcddfe24438629a0d6dd6bce444b3d81e71777a1918. 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/NL7DA2400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e7e7d00c6014e1cc6692144e0a631eff8e9a56f25e4ef36107ef187472fd4. 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/NL7DA2400446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29557654715901e117365b6051a2557a11d9a73598d91d6f7a2b948122432c2b. 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/NL7DA2400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fc310425693dcbfeb09d84b2dcf61b8a6160079a685e32c919c240ff1bee5e. 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/NLB602200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a5298791bb1f07ab7467a073fc02394e90afceb7df2047d3cc85021129e9d4. 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/NLB601900190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fab2391722c7f411930def6af266b54fc37d4471a038365136ab76f65e5121. 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/NLB601900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1ddcc1153d4c49db24801fd9b6fc42fcd7ae3236ff34e2de6b6229befe331. 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/NLB601900193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e1135ab11e73516083a7f560173119a65f724b8a5164867b3404c83d293703. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLB601900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e978cd5db16ba54772cd0fdd912117eee62684b5ff6084ca8f50ce5f30227a. 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/NLB601900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601a0d1dccaf7f0a2cd92cf8996216b9d1a5a8ebc0b9ba051600c2f0f2a4c733. 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/NLB601900196.
Heerser over Weinig, Meester van Niks (Akoestische Versie)
Heerser over Weinig, Meester van Niks - Akoestische Versie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91efa8a24533eca42f40821b8da5e2bc17462ed970d6582f01ce7fe2ae300d0c. 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/NL7DA2500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44785950e5c7114f9b3c8f68ffbdfd7c9923fd284f89e05da13e24b069424874. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NL7DA2400441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109e965c755c4264960643737a1b863d36120161c457b41382568ff42e6bc7ca. 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/NL7DA2400444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23224d5c3654eb02b2db258050351414f382fca29037340cf87f0bbf76552bf0. 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/NL7DA2400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06c649b69bcc8ef4a0e3b1b802bf7e966c6a0c32627050ca70dd53e1e681f2. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NL7DA2400452.
Jan Douwe Kroeske presents: 2 Meter Sessions #1768 - Vic Willems
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e25587f1abd6c4f701de4d872497935352028bbeb95aec7da69a7219a915f. 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/NLXZ51700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2179cb8dc222988d85ae803e17e7b86496a178d84aeaa50d2e0203c3edc66a9. 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/NL6ZU2200016.
De Beste Singer Songwriters in`t Nederlands