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 0x1e44a776f7ec26d901d90cc62a8ca4374e5fec0b608714745334e0718a6d5e41. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6a1e219-ba0c-48c0-af8a-424970658efe.json and https://artists.proofprofile.net/proofs/artist/d6a1e219-ba0c-48c0-af8a-424970658efe.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 0xef8cf2f971989a4f3cb8bc21fc4a7d6b83338bf326c498438ed0f3716e4ddbeb. 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/NLZ7B2300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f1c25017711fc25e5adfefdd7f842a3716846e73c22b1ec231b1367d514ca5. 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/NLZ7B2300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16b2c567f7703c314072c37d426adbf1df22cdab1344bf0824817b571c1732c. 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/NLZ7B2300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3eded10ed8d223da1df8143d76f3fa96e7850d4791c0a31f09745c481fd5c. 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/NLZ7B2300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16b2c567f7703c314072c37d426adbf1df22cdab1344bf0824817b571c1732c. 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/NLZ7B2300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f1c25017711fc25e5adfefdd7f842a3716846e73c22b1ec231b1367d514ca5. 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/NLZ7B2300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3459d73084f17b343bad70bae9bff46523a4a9006187b2fc22a8398f12b4919d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLZ7B2300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f51d1d75b92653e278d74d9c310214091f76a27187aaae86c1b9ed70365e62. 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/NLZ7B2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3eded10ed8d223da1df8143d76f3fa96e7850d4791c0a31f09745c481fd5c. 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/NLZ7B2300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8cf2f971989a4f3cb8bc21fc4a7d6b83338bf326c498438ed0f3716e4ddbeb. 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/NLZ7B2300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cad3be67d32f6768cd591768dda00057399175ca567ea029234450ad3a510ad. 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/NLZ7B2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f27d2adeacde6c44e6564f45540bddda1f0ae6651bc4d229618f73b669191. 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/NLZ7B2300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eb988ed53677692c2f4473c1b3c50eb1779fbbf44e25b342006c9b468fd552. 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/NLZ7B2300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f2f39818430bb6431d14646abea91dc4bfbd77c0acc8ded496a462a4718fa0. 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/NLZ7B2300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bd1b34866d6262f1382fa84697ddd92d1cd45a05e4f19a52707518ee254f54. 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/NLZ7B2300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2adbd47886b38b85ddcd3bf3e19c2b2520c22dcf98c75c5b14025c82889beec. 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/NLZ7B2300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4d61ecb2084d456da35b9f4ad6bafc8f091a5a191989c1406e5eeddc06701d. 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/NLZ7B2100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc29d2349cb4de25f1436e74a02384cb06d4a5ec2e0124e981c6e342761dc148. 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/NLZ7B2300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975e6de4a7ccb670bed7c0093d70add7bbd116bb73bd4b0b188cb891849cc754. 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/NLZ7B2300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b88279a0de17b85bcdb099b6dcfb70db992e43f1a05c67874ed4513e1f92d0. 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/NLZ7B2200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c61e9f8380a9310402ed3b39892d9e35d80a5a6e67c3c5cd5c1c00ba4501036. 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/NLZ7B2300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb02eb7b4b7af8debe687a4e0d69efc813230b3e97a23f7e6eee326791f42e59. 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/NLZ7B2300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd190cf66aad5e59fc5f698be655c2b732e610cf99deaf40f3e82e603b7e89f22. 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/NLZ7B2300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9172d93b8ce5c0a6f395bc6482fd82e30ad84831bd92e939bf6703bb29761377. 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/NLZ7B2300274.
Stop Drugs (In Me Gezicht) - House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005d8dda08eb27b8779b5fdc6fa042deda0a0a5a57a99f85f98e867fcb604b51. 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/NLZ7B2300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956265dfbaf010a559593cdbeea1d9c1724a2f6582353c197d2286193249bf10. 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/NLZ7B2300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9baf29e9a205d9b77cd462f8d5266f25b1792089ed95a954f4b041b04e0c46. 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/NLZ7B2300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0515f365d59ea079beacd372035bca6e7f322641505a2bcbf0ee80ff3bbfe94c. 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/QZHN32420028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74cfb785bc642d4cf240d99397b27f340fdd50c9c772fc1f0fb21eedb2f6282. 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/QZWFE2354532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ba9d01241dac1290ad57335d60694bb616b4ca9df3f1a650415d013e68a011. 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/QZMEM2353989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e918b4f8b816ff00057c3878e16225c4676618ae5dc8f66a7f7a7965ea217a. 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/QZHN32420030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff7ae79e0476a95183c718ec16197e22b7f0514d7a9b9806825170b63061d9. 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/QZHN32420031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d31422bf54fab3babf2f40ed5aa6f90cd61378c24a26e497b659aede8e9cf5. 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/QZHN32338650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f42c9b04f33a73a7648b7b41f09206d57748438ddfda9573c5cee1b7c73bd2f. 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/QZHN32420032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6498b76fcbe294257102361ba8d2bc15784a0bc7344298e4ad2fb9ac9364e09. 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/NLZ7B2200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e3cdf59cf35c75da99db9925e3e23de644417fca68817a819c590a1e21f0ae. 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/NLZ7B2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8851bf0c5ceb4c41b8cafa532d908fb463cf263cade165f3b7069e38f33e93ca. 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/QZK6N2325566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207395efca666d67a0866c713345862a492470ab189e7a6fdc009c7423da41bb. 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/QZTAX2434740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082e24d7bde86c86d3a3f615def8021fdee2305fd65a84132f695f3cd1414ecc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTAX2434741.