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 0x239f2b03c128a584a428c83615637006bd427ad7bb5a70692cccd0ead93fbc66. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd170aab-dac7-48de-aba3-44a55ccfddc5.json and https://artists.proofprofile.net/proofs/artist/bd170aab-dac7-48de-aba3-44a55ccfddc5.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 0xefdc6d0f2edd2373db7528299fb40ddbc75af9e3e60a536e3fef4ba54d314fa2. 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/QZK6F2206050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf75fa91a2bef7fe84e7616e9f9c39a323b66d3fd7a47a70d29c8fede5624144. 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/QZK6F2206051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe326c64f16c365454798603868a308589fe2e6d00f114c0bec527113b5c82d. 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/QZK6G2244785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fb4d6fbc196cea64de4e44a4405ba5e2e9bc89446364813fc329b6127aeccb. 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/QZK6F2206056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9ec9688619548c9480b56031d98a2687fd9556c42391764c9ec788f945649e. 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/QZK6F2206059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad60478ebe4e7add41ec3ea96468ecb14da100a351298782e2ffe28357eb21b. 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/QZNWU2218496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802c396291871aa4bad0fc7ea147462a34776ac8c51379568bb461584e271495. 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/QZNWU2218497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d81e9c704096e00b63e47ec289e3823cac30c9a712939f1cdf761cf03f81de3. 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/QZNWU2218498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64d95118602e26cedcc78cd0a31db86637ef76a8b639beb745c5adf2dfe8a7. 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/QZNWU2218499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130fdb6ec17269967905239e3d4275b2e22999fa73ce7fd400cc6b42e90977f4. 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/QZNWU2218500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59079d7a8cb57e6984296adedf12578dcb33f7cc58dd2b92c93f02a3dbcd6859. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWU2218502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a93e90d4992974d5f0c6bf593996a8dfb6b54bd2f50ce9a48a32225865c753e. 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/QZNWU2218503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98796f598318d9c2236cb71104f647afe1e44b1b4abbbfa2083b31aac4bb0225. 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/QZHN32350841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6e42daa43fcd51538baafeb0199d483875785aeee2dafe513f541e11b551b. 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/NLD3G2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe326c64f16c365454798603868a308589fe2e6d00f114c0bec527113b5c82d. 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/QZK6G2244785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c66da548ad7d8cde92217111716aab105c2dc45c3aac90963bf28c761c0a0c8. 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/QZK6G2244786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb529579b690bf8ef0fc0ddab3f92b1f39cfda430371b2966539f465f7303394e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6G2261061.
De Beste Singer Songwriter Van Nederland 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536a41c9d76eda2894839b0bc170ceb1db5f9886d094c6d258b52bcdc9d0127e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLG531400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b66cf839ed3a9e277b84a7c15b415e18aab92d9cd49f9fd9e2c0ae01b3a6b0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLG531400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d0ada1c084adc4000d1063a0c4b8a5e7186a7d6928956804eff6d929db8dab. 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/NLG531400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c91f72c5c98d55d002aadac1ebd199083336c24f7c5b12958d05d1021aea19. 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/NLG531400048.
13 Lola's (Original Soundtrack Of Papa Terrible)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b4dd36a9e47d3994454aab182df187c817e7b2cf4c2a76a49cafb2fa9d80f7. 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/NL7DA2500948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa5deebf618c3f0b0dd87be9a80e4aacf13362b7ff82c3475bd9567ec35d233. 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/NL7DA2500542.