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 0xe7666d70d0019bb5545b3e7535a3b65c56600bda6f6e43a86f6217fd8442d3e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f40c87e4-d30e-461a-b546-abae885d4c76.json and https://artists.proofprofile.net/proofs/artist/f40c87e4-d30e-461a-b546-abae885d4c76.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 0xddc6dbd0e63db0a3391f5f21037a6ca54a071ec3198eafc92d4480bcb04aceaa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI00659080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa39cd7e507ca957d012a2f685c5f2891f41db2e040e483e2f1ef11195879cf5. 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/JPVI00660360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6479b59ddd242361bfce7e943c6a0b76e802f1c193cdbe346e0686a5f22aadd5. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/JPVI00660980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9ba2eeb2e81d6c6aa13f97ce2b5ad9a689ec412e99a2a261d55cda4b22c68. 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/JPVI00660460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9a66bb72f379cfbad79b75b8dbd1aaf19285cd23ab835fcb2d2d5d29bfc73. 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/JPVI00659910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6022b2d4df79cc0adad77579fbe12bb0f5105da0ee7dcdc4b5e66449d36d8f73. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPVI00634780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2e3c3923bd624d09ce087c305876f0bf00316436f01dfcd505e3e6b1536104. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI00634810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1defc9f9c9d4f5c499b7c1a5e00b05742df8aa260d6c158e2ddd3fa8ef5b150f. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:53:23Z), 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/JPVI00634820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0128fa0faa3ed36aed67ba388ce8c1b6dc94871cef49ea8f90b347ad6557c43. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:33Z), 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/JPVI00634840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e83b6fd19f5fcfc9977ce1e3cc7f53c48d5b1d54e310291002c9750378de1a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPVI00634850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26c5b0c41b42c4fdd7f9214612381005705230218b353f487dbe370f72620de. 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/JPVI00634860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df55008660490029b65de6a15fe6159149548c4d06cdc7924bd0846e1ebd6a. 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/JPVI00634870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb1b4380e3ec81f5bd609f054ac10f1f7eec6d4eb966a15d9bad0fd14d9c934. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI00634900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3b6cf6a2e01a728d57bc55de9bec241e77370c7d9b3ff06d0f6a2bae929fb1. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:28:33Z), 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/JPVI00634920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae463baa9981927ff4e0aa478f4a4ca4f1ca2e80c0aff1e8fdaa9df3e950966. 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/JPVI00635020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e714d7924abd875bedfdbb6f4cb6fec1135aeed36d9782c2a5c38331bc70e. 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/JPVI00635130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809664864b5d82f2fdd1a4298b13cab62736fb83904e0a3dbf57d4931fcfaa4a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI00635140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff8c3ac1862683c0c9797fa67430d39f338157ea4b1798bb2cde53f7a57d3b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPVI00635150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa78c0adc29b3bd8671f7e008a6a8f6c31b9b2291dd8b86d46755e99582d9ed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI00635200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae3275b62ecc25668f5b91d3d69c58afd95a1f5b19310e041265bbdd1c47a10. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:39Z), 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/JPVI00635270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd371445d92e13b6c8e0ffd4e15f1e7e16ba1a8368dc6dd083d851b626f59b241. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:03Z), 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/JPVI00635300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39831e7328cc731621497c0eba4e7beb140cc3105bce200aa8ca7f94638c576f. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:01:23Z), 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/JPVI00635340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cb5d67763cffc689e379f734a8cd98bc2967d5cc5aabb7fad23b23cda8ea68. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPVI00635360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61756b86559c00be76a93e21b331ee4db2fc28cb7cdb607eac7294923dd3fc99. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:27Z), 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/JPVI00635370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765ad5d67fd24c652913774f29b51f2693c03df07b34eecefdb0756c7632940a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPVI00635390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356a29a7f36c2aef7fcedb3c7b55cae22992516b9094669f7bf93fa63eb153d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPVI00635400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e161db0afe5cdcb1cc9d7139225435fceccca09df79c71f53fdccb8d8c8ba29. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPVI00635420.