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 0x0dbcde2f38c5f3cd20bcaff0c3f091b4e729f3950ea3be288c9267c334d8ddd7. 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/1dab8810-2406-42df-a365-45ff2c258933.json and https://artists.proofprofile.net/proofs/artist/1dab8810-2406-42df-a365-45ff2c258933.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 0xa5d02934cecdc03a4c7106381e9bde2c8aadb465c197c47ff763554e73271881. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLB840700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bae6371bea9df29ad872805d714b3b35b5e501ed25508367101f96201be72f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLB840700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513bfecdc641841e8a73c3f32c1203d4b10ad990ed3a94b0319f7d1f2479fe0b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLB840700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f4e2ae49fcd75048d2757ec6616b243a1f7dc5da2491cb332c3895c1b0cba8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLB840700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e598450cf67254478db172eb64695f1a8a1ee98fbdafaecf0c00d6e595b8965. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:59:26Z), 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/PLB840700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378a7f92a8ac144270aef7a8b6870428601b1efbf002aff4a1f9b01022349ad. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/PLB841300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bed7203b1c9fd741224c66c4a1b770b15430173db2ca9e5b56125bd6d002d0. 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/PLB841300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd26d906d1ef16ed9c9293e20507471f01b1e01d9bfe51ad1555038b9d895b44. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/PLB841300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842069ebf5f54b55a472ff8dee56944b3ea91b94b070ba940581b55dc623978e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLB841300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6500fc3e13c6004800eaba634220f603eece5f1ac0dd0468d956f3af76dcf1. 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/PLB841300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae8c75f5a685aa76ccddf8c474c00655f908fc18b77ba346f7e6b507e34a70. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLB841400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510374ad0657580fee7ce987c314c69db53d924a6425fd931da5cdb275e717ef. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:55:43Z), 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/PLB841700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90f302412395e4055a3ccf5501e0a97868d5127dc3d17ba13d8ed2c924cc5dc. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:06Z), 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/PLB841700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8392604ff48217855f7d6b61a25dd7785b83b1d693128c4df4fc292d3502f493. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLB841700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c98e98c2da23f446b7855ca181e9ed780631097aaf819a441eeeac655ef2a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:33Z), 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/PLB841700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fbf4f34d1871c48c9efb94e1a4dedf57fe66c3bc48e723e4c140bdee286ce9. 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/PLB841700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacf26c68ebb1d4b77426a373506bfcfb681e6d7046ed918cba8eec7d104ca5f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:41:29Z), 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/PLB841800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a591c8546721d982d592d8be1f7708ab06c01223b206e2f6f7e4e11d4b37eb2. 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/PLB841800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54fcab66577818c122a1d9e65ee4b6ffb0416265f754737b5318764e642cc2f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLB841800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cad88b3c6f7b14dd7bfda3681f8a2390ec3dd7a321398c278a5eebd522fcf9. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/PLB841800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcc444139bc78ec19f62f1f274180255bc295156616d11ad3a04fae39473bd3. 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/PLB841800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c4907a2aebb3f85c8c9970f461e85f2e459c1aa7dfd30ba75c2283b8ac589d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLB841800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f259a5f0db7247f58eaff3d2665f0d93dc4f3673bf98e1a6db2d86b765d8195. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLB842200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff8748c02b96e8484f3ca78db1a0dd9719e0ea945d24d3e4b9bc5e89349ee6a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLB842200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116e5373fc6500183456d0c018bdc56634a8624c2023265fcdc6e7256eaa6c2c. 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/PLB842200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d68b7f41af9d318981f09ef4c31a85362088bb99a9b422f9aeae94c17782b48. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLB842200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b51e9e40eaa4ff12c64f037d120f23df50d49ce85cf964bbca5f7ab86e9e7ba. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLB842200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a46a8c130bd672f106ccfe568f4686a30930e12c1d44bc5790388e194a270dd. 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/PLB842400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6171043a8da7d431d0af503e8d162c54e626aa3c49e12d2678769f21714d9ef1. 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/PLB842400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d61775da19cf5e10b9ad3273f49bfcf47068d870f0bd6c0ddfc250d5b613dd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLB842400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fd1cb73ee7d210e67b1266fca84f419b028fcef84bc7a651038ee7baf45775. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/PLB842400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f87a6ead97031ac0bbdff0056cf5feb6b72b45fef5a5340b75e58201ac6a47f. 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/PLB842400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c9ea7e46e2d7d9b98e4f4cd3c2517bff3b5d4a080ecd7d9a203fcb68d77485. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLB842400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2fcd59ef8080552f965665031d1dc4a1c525d7ff6bfe71984a523e593ec2d4. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:49Z), 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/PLB842400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273d09f547928a49e905cc6739dc59f2397931cd8220ac64a6efec62e7dca134. 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/PLB842400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5714b3d85f599968946fba594a240da4fa252b162eaaf2156039336dbbf908d9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PLB842500030.