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 0xae1bc0f3757bf066f25bb5600cec9cb993debecd5fc164538702d913cc877296. 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/6638aa9f-cad7-40ee-947f-6631829d161a.json and https://artists.proofprofile.net/proofs/artist/6638aa9f-cad7-40ee-947f-6631829d161a.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 0xdfc011d4aa7cd64a7f3e9e7563747a7ab0598cf6cd1616bb85a876d0320b0426. 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/US7NV1900293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d42419d2321c5fd3b2329c10dd74ce0109b9b339597cfb88241cca9601f757. 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/US7NV1900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a0221bf0d85eeb0d1397b325cd31b97d569008fa45f41e722b9f8d320d20d5. 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/US7NV1900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d30fe7711b1ca850982182b84cd560ccd8f3a74b33bb149c1df80a774a438f. 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/US7NV1900296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05cb4f20063b0d4632ab58844fe23b4d34864a6d11e1d19147f0a562f463d77. 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/US7NV1900297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f19fc0309a0d3fb1d20c570a191be9446e81d70ea272cf154e661fe34124d5c. 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/US7NV1900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0d219fe35644cc2bb95f18f43d4166cba416e40a695df761974b7cbc92c11. 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/US7NV1900299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb290b04cfdad3722b41b6fce2707183794a9a4f2a0d66c1a8e3c590f2597816e. 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/US7NV1900300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a6afbd6c54aa16608d4f8beb18be4a6b70a74e7389aa6d2667a64207995af2. 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/US7NV1900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a9cb1dda6b47076c272475ed34947b4d98c77deb4dfd9d9b68d520772c7fb8. 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/US7NV1900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf824250ca91ee7e59ac33ab97ada729186748015b9707bf3050f20b882ef487c. 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/US7NV2100391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f3829cede60fe07fc708efd76eba13302c16f8e2e958aa57da19909064b1f6. 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/US7NV2100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101b55d4afc1055f68df14f7d2f6c8772f9228640841449c5ba437fd22954db1. 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/US7NV2100392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a4c5f897f09dff0893d89055744c5bfc871ea91d716445cb34a33c59f2369. 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/US7NV2100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5428279c55a79a382cd849f63891cc5f8f2de8e46f4c46048ec0fccb03241. 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/US7NV2100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5428279c55a79a382cd849f63891cc5f8f2de8e46f4c46048ec0fccb03241. 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/US7NV2100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a4c5f897f09dff0893d89055744c5bfc871ea91d716445cb34a33c59f2369. 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/US7NV2100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f3829cede60fe07fc708efd76eba13302c16f8e2e958aa57da19909064b1f6. 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/US7NV2100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a9cb1dda6b47076c272475ed34947b4d98c77deb4dfd9d9b68d520772c7fb8. 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/US7NV1900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0d219fe35644cc2bb95f18f43d4166cba416e40a695df761974b7cbc92c11. 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/US7NV1900299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d30fe7711b1ca850982182b84cd560ccd8f3a74b33bb149c1df80a774a438f. 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/US7NV1900296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d42419d2321c5fd3b2329c10dd74ce0109b9b339597cfb88241cca9601f757. 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/US7NV1900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad1a362ca5342e3e1dadbca58b175d29239d4bc42975a4d39d8ad2e49e599d6. 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/QZB4J1831066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e9bf721e1ca7d7011e52c3d39121ba84bdb11c9b94664f914af3be29541931. 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/QZB4J1831068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f9ea9de2ba87d1d6d75805973e0ae63957ad9758424af3f74573c93f19ca6. 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/QZBRF1856510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b1a47ca7cf50592f5cb3a566f278b4d8d643a408fdac72909ccbb6bf42f362. 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/QZANL1778164.