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 0xffafc5beb69a2ddf6ce7645b7871b4ea31844f52571c52400c5a5fc41a2cddb8. 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/3b52e1d8-d416-48cb-bf71-0e504d866f59.json and https://artists.proofprofile.net/proofs/artist/3b52e1d8-d416-48cb-bf71-0e504d866f59.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 0xdec99ead05e2ae6890e1d7e371295ffa938d2e52308e2bad57e1b518254619dc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLK5D2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3c081f95958db003b7974127d8c0fc4c59d9dd5867dac0366a461f55355830. 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/NL5CY2300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3c081f95958db003b7974127d8c0fc4c59d9dd5867dac0366a461f55355830. 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/NL5CY2300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e877c24ed3c9969e536fb74b9cc9a742373869c30f7fd2887872e3a890589. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL5CY2300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd085f81f303b294158894d5a32a01dcbbd2322a406df3c699bf7dc517fab9467. 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/NL5KD2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aa6255b5521242f408609d498218e8b1d24d4acaa99d1b832ed462e8dfdc0a. 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/NL5KD2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e9df04ce9335b763fb74c1f53b336baf9b97994ae01dbbbd9201df35d3ac2a. 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/NL5KD2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e9df04ce9335b763fb74c1f53b336baf9b97994ae01dbbbd9201df35d3ac2a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL5KD2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aa6255b5521242f408609d498218e8b1d24d4acaa99d1b832ed462e8dfdc0a. 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/NL5KD2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba13cfe75934218175417b7377d029d3a384724f9c6068b5cfb00522ba4f445. 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/NL5KD2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3015178debbbbc8da9226bd03b83e31658333640d20c63e843c4d543c8fb4706. 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/NL5KD2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793600f995cc8397279b6e9d196736808c5105d38e142f28e931929789d9c92. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL5KD2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e8d7d0cbf2e8269d00b7e4e0d96bb2b221c654eab55349bef1169f40f81596. 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/NL5KD2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b620391f40c9fddceae1937bb18c0df625ad3c757517bd2e7b24e38c5052af. 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/NL5KD2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c635dceb9cd0adbc549ecbedd36bc1628bda00434424b09572bbd0fb7f0702e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL5KD2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b620391f40c9fddceae1937bb18c0df625ad3c757517bd2e7b24e38c5052af. 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/NL5KD2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a7f6dcc3ee6934100cb5bbe4c0958a571c57d4e89d743a0360ca9c3b4035fd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLK5D2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd6e71acc749ecb0465b43a28a3c192ec26e48fc7c1e68ab3c98b17fbfe09d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLK5D2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab27998344717b307c5f004b62e76b09f03688bce4a52ad23a8be4263234f2a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL5CY2300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46a10233e5248fc325cb4239cfe07cd33b9fcddbe943faa12812da7611a7829. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLK5D2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f3b4184781a9d17d388914581590ec29ca9b7e244bd560a3b04fd245d5b2ff. 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/NLK5D2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe553b896bf69f6c134c422229f2c5864d0f19e64b4a5f751dab8c8c3dc55a3f0. 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/NLK5D2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd59528b052924e107b86dca9d388952fbd8c410b805a205e505a4e9e945019. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLK5D2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770aa8e40345cc82ecddb9a0b3e424cc27219db15fbe53c5455d23348382f7c1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NL5CY2300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447f6c878c293d7a5587a361a204134d24915d4477ef26fe5e479b0316c43ef3. 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/NLK5D2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd599e7b4a59b9cdf69e02b6a2f364c579700dd819d25ee128738b988439537b3. 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/NLK5D2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74998a59e1a5ac04e4f80106574097d71f77882a9a7c16f7a830b66008c8f792. 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/NLK5D2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12069e816c32ddda32555e9643072edbf6271000bf19940a8b832b42ecc7b5fe. 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/NLK5D2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab27998344717b307c5f004b62e76b09f03688bce4a52ad23a8be4263234f2a. 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/NL5CY2300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770aa8e40345cc82ecddb9a0b3e424cc27219db15fbe53c5455d23348382f7c1. 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/NL5CY2300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770aa8e40345cc82ecddb9a0b3e424cc27219db15fbe53c5455d23348382f7c1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL5CY2300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc31c191e957ac6b02aeee793d98a92aa958a80202973b32a8d2dee7cc7b27f. 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/NL5CY2300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec99ead05e2ae6890e1d7e371295ffa938d2e52308e2bad57e1b518254619dc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLK5D2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebcef5c1ca636d183857a7af835827b6346c63050385e408c022d2f71b9bd2a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL5CY2300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec5ed34e3c41c3bb41a7f0703398052b0f7bf3b9cf5373155a2fbc6fea7dd86. 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/NLK5D2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc31c191e957ac6b02aeee793d98a92aa958a80202973b32a8d2dee7cc7b27f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL5CY2300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebcef5c1ca636d183857a7af835827b6346c63050385e408c022d2f71b9bd2a. 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/NL5CY2300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebcef5c1ca636d183857a7af835827b6346c63050385e408c022d2f71b9bd2a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL5CY2300239.