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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa6f77bf1ed829dca24d5ec1ba2a9d9ac466dd92db8067b9b17f8e21657e09a. 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/2bec8877-a5e5-4531-8187-4c314bc7f1a3.json and https://artists.proofprofile.net/proofs/artist/2bec8877-a5e5-4531-8187-4c314bc7f1a3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5645b3a55f85f2ac79b268eeab5a4e5f7a699eb3bf65942f01ebe2b0ade007ee. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/IDA191300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0d6c22eee0beacbc6829bb24fd202ce49da961ab0ad9f86ac2059837ecf6b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IDA191300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719144d70b4fab45707d39c0c4719bf28fe3f7064389f74af96a5e07d28a0994. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/IDA191300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb5c021e80bbafd0559523320719bcb69018c2c0e0338a29454d7ce143eb12. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/IDA191300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b60661940c0b94d6e333f5141cabbbfffa7ad208725945f8ffff54a84cde16. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA191301845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02854dd2f3073647b1d5e2e7757ad535b13e18f2ea3f9e5fc2f196190d4419e. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/IDA191301846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af58fe0a366c19db039fdfd2f596fe963aeba29ca825cae1ec58be6335d9c09. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/IDA191301848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cda2b797c94004546e7dcc4cf0dab315d4453d8fa8c6db4e7c45d1c0f14d84b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/IDA191301850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252017546975fc618ae1787e511b47c8b314048f9a78b9550d447c6071b030f5. 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/IDA191301852.
Tak Selamanya Selingkuh Itu Indah, Pt. 2 (TSSII 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127a631ade5bbfbf6543b40b44423f7790cc8816ba54dde4eeb45e4e53a59402. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA191703131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb1a5eb6806f4e345eb77eeeed5b512d28dbe9e81af46dd91fca6c931e4f7cf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/IDA191703161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e7193a0dd3cbe6568f5e069c4940055aca4c4a76271ee1d77d6f7206570e77. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/IDA191502955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fa8493df19a76279a2cf4f4d017302a766e70a1b350bb89010d294d42c352b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA191402554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29f7da8eb7e0ea6669f16ca7e0c031c0fd26aed3577ac284d3fbbc09d52268. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IDA191301611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dba90953cdcbd529440fb45dd599754319f6dfecf65b48b89ab773773652d29. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA191302279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46befa61cbfe7daf86a6ae1ca6f51703fc7fb790df4e88336d524e3d02025b74. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IDA191301982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe131a66ed004b33b869c92c9c23a6ac921be39cfad2a5093c48bde68761967eb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/IDA191302283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d20d19de5e08a04c24a0c0afb3f2ab5d6aab3c73751caa3e97366fe42494c8. 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/IDA191302284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7969a85e581b9bbfd53837c1ff98a3d8fa473ebe5d8810f29762ebdcbe1434b6. 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/IDA191300627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd412f961ea5ab298f5c48bd787d9ea387f74646a6132f9a56a9de20dc6fcb402. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/IDA191703237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a53dd0bb2483c18f92a7e087caf8d089137fa8fc1c5c2c86a6246d8a46a95e9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA191803293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0749c3b385cc411b933fefa546061638b65ae5a3d89a8b0b4f1c8113327e6d30. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IDA191803338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9937dad2210b27874f03d21206de2195e6d380c48d79f7aac996c63d188f63d. 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/IDA192203776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557aa0371e0f6b4b6a2deef06a4136ef4d637f417273602b8a328881387fd623. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA192203789.