1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa8d0f02101cdc9add730579789a70b2f8d0ff9b7f16bbc813fe4aa620561cfea. 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/3e733cd9-c015-436b-938e-0660e6fdba98.json and https://artists.proofprofile.net/proofs/artist/3e733cd9-c015-436b-938e-0660e6fdba98.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 → block OTSBitcoinBlock must exist at that height 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 0x9093a9065f9335bb699ee41425fce55de6fee42832090feba3468dd1acad2b39. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:18Z), 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/NLHN50900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fdfac62d499f74508f899ad9d053d218ef5466db607acf2c5ce710143579b5. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/NLHN50900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841f0463b76ba6f7a5ec0f1b1357f4e092d90d16194b5836135aca1758487b11. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NLHN50900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948ccb56f96abec983a3d8c153dc1cc7c40e733d7b407e414de39dcb8c51dfab. 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/NLHN51100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ec8caa49b2221d9f30e67247cbcd380e0c74247fc9e91a85b1c93a1721da66. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLB7O1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5038a2e3254e9c7232c8358cb8106fc93d6cb1a7fdd1d49766166a912c624bd. 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/NLW2R1711144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76026b440597b9367816980db88206a4d3e7718ef778082e7da3eb2b03b6563b. 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/NLB7O1400013.
Between the Two of Us (feat. Ruben Hein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc002e6ab8c07d5dceba5760d46c51c3cc38d439ab9bf8994a7891b8e155e2349. 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/NLD291600051.
Nashville Boogie (feat. The Ragtime Wranglers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd44dd7170b783ef7d1f84eb1693188fac8010a1498dd869858b4eba88f7d93. 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/NLD291600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47d9ddce26a7dce37b057ff992762daffa680ed9a4a63a42a4803efb5272b05. 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/NLD291800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26b2eafc8fdd37cfd6cd2be60aee4ac4e9b521a1c6b1df99f4449e6ff6e60e3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLD291800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36f4db010a0915fd2c51c6e2b3ce5c9fe06c86856ec4473c61038018a8e2bf. 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/NLD291800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7705ac2d56de17c43e601b625c478822fe51799daef1c02ba8a45e8dd983e97a. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/NLD291800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3b84cae1996e367597d387a09913933b29f508ff1cabf769a5746af2a43b5d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMEU31919262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4992c7b4e21c4b365a04b37e5235c5a3cf5e2c222752b870c024c2e3672471. 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/QMEU31919264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad218868391029892aece83887538a598da6d1196612333a7056138f266ca48. 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/QMEU31919265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995cea307df48af8a127183de8a8bc64cf2e14aed22f1a048043f09c4d50d792. 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/QMEU31919266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f2b5b3abac8ce8781960845fa2051f0939ab60d89d7ee5b5c4c926248a5d56. 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/NLQ272200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d800fdc95bd584a4a78dcecf38568119215712a995e7f2075e173ad6b15d2. 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/NLQ272200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85dfbed3d6b3106525646162d0952df873a6a16987546915a67929687e83160. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLQ272200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579507f0259eb8d3401369ff04c6dea801a65b3752e0ae4cce71a122a7132983. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:45:48Z), 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/NLQ272200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987c37438e70ac6262dc7370c43ef4464e17aa5817cb5beee2ce8feba192e565. 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/NLH271600002.
Een Dag Om Nooit Te Vergeten (Originele Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9673f8548dd15502f944298f8bec6fa24a2425bdbc24f5d31dc09f3130f58fd9. 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/NLK072100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f3a0f2ce971e5d16d9c27bfbf9f982fe26d7eaa9c44737d7097d50bda0753. 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/NLK072100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84f6e605edd59aab4c8af85a6b32d84cbb9a7045a18e6a1daa40029c4bffacc. 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/NLQ272200057.