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 0x69cf23daae0b5b8d6f3c3527d5dc267e22f62b8e616f3986901f668e7f9e86a6. 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/e7980e84-273c-404c-9269-11715e72e506.json and https://artists.proofprofile.net/proofs/artist/e7980e84-273c-404c-9269-11715e72e506.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 0xd8b600a9cf669ef3f334d0d1946c118da30781daf3e91849f53a7c0674237f2d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:55:45Z), 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/QZZ8B2391187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932993a248b897d95f4bb6ea829132d733693b85fa3b2e1b0bd639e01987effa. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZZ8B2391188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9576cd94921b062dd3e8920e49c7d217c1e1b4c12a8e88a4fb8d5d8e313148. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZZ8B2391198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b3c45715c98fcef829e2c7907356ef95349ac9282b9d170d706899accfd8f0. 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/QZZEC2318814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703c9a5ef4874d09d2e2df2d0775f4fe6def549702e99c2c2edea39f50c64ab4. 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/QZZEC2318817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308771b045b15fea8ff5de9c34805344c470e72a7b8c8aca85af36d05432f836. 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/QZZEC2318818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab6c3da2ff2447ac9a77cdd41a5ee7cbb33d529360751cf9cacd1702955e89e. 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/GBWUL2489823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e31c7e7200881b5fc09455a1018ab4b9810cadc4bd68f7335de43f612db49. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBWUL2489815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8c774b941a3ee29533bd2cd042244512c56e8be3771b5e2595f92ac408f58d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBWUL2489824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b8ffaa9e4beb1b7b4d872c478d4dba3657627a8519ec74d102f3870909a483. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:40:43Z), 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/GBWUL2489825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903ed0a33fd796be38dc82ea0934c02680efffb01ca99812ca8dce330ae77d69. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:44Z), 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/GBWUL2489829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105447fe5c42a96cd9a7f89f96acc595c90caa594a2e789b4aa0be796b933e8b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:36:50Z), 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/GBWUL2489830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83949c2dd0acb88598e1ee27ef3c3f724fc6a35356e2ef11eeeeb8c55481aa02. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTV32435752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34fc4c6ceeae0a5ef2a1ca4d7f148eb44762a6f179ce45730830134204b8b0e. 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/QZTV32435756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576d96736dfc88cb31317bfa581043542be8dd6222a3f23ade734c43c800e85c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTV32435750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea413a8b4bc5da3540cb9ce40817a6ab639af93e1cd6b80e66d855b3763c450. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTV32435758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d088feaf1fad1ac764e1c173a18005c98e7179668c6cb5182cec555ce2ecac. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZWDE2496308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cd63ed5c93e63f823fbef87bbb82f30b49359fd290172863ce1d161e6f3af9. 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/QZWDE2496299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ed6356e491ff5c7e8110e83ac3b61a5bf054b167ca6da04531df285314a644. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZWDE2496298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d8a696c03d66cc3adbf9359dc01a9ff72bbe32cbc7ce6b09e646f95da2b1ba. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWDE2496301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef62da37f077709bc9bc5cfe4e46765d4f0fa9d22b98de1fc2639ac1f24c745. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWV32464811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74e49476ee7a542a46ce6b3071f0cf083cc1d163182db476c751f0b755bb0cf. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZWV32464812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8c56eec3fcd03c0b955050d8b7a90928d9978a22eca4829549cd810cbd002b. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:41Z), 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/QZWV32464814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21bbe0529ea64f7bd10189a35b1707276f3f0000589716f2e2a6eec2c17eab3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:03Z), 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/QZZ8A2411658.