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 0x19ee77f19cdce8984def6a23ab01560c9d663ecf021835d0933e02afb3f0292d. 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/df08b7a4-9add-47cf-a819-3f2d3702c6b4.json and https://artists.proofprofile.net/proofs/artist/df08b7a4-9add-47cf-a819-3f2d3702c6b4.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 0x2184172e98ad001126ed74dc03b84da583d5309adfff8740457146737ac88fdd. 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/QM24S2201058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15173b0ef9d654e352afb7894c2dd9df53819534d0aa63b12fdd9cd5f8ac7155. 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/QM24S2201690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b648c90d3bc4f26eea65ae4d2cf321bb612d6421a34422b5b7363775a61fe13. 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/QM24S2201686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c2f52f55bedc4d22136320518ff91baae017b71f986d84965695e4dc7e8b54. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM24S2201498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38915207ab15993789506b0c99fb20f56176cfbc3fbdc9588b45a8cac6c2fb1b. 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/QM24S2202246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2f77f7e1943aa0281253bd4a96f03a3b9f8b957f150522499ea7f696cdcb8d. 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/SE5ZV2101701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0fc5995ed18e891bdd49209b3d39f3b5985686584c1993b0976519e3902f3c. 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/SE5ZV2101702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962d5a02bdf443b1bfdb4e57101ee5d3b680d6d5f089b7f0b6370a4aad5aff4c. 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/SE5ZV2101703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cdd01a5f9e69458213dbc471bb936fd2a9e76fb5a5d0849cb91b24e40c610f. 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/SE5ZV2101704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc63848d6dd40cf0aea67b7b63631b57b895d1d1a1cec7eb42f6bd4bd006bad. 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/SE5ZV2101708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de7e1dfbbfd33bc4fbe47b4910ef5a259ed70e05254181dc8980b0197ed42bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2006858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80fa890dced52db254c738c6fb9f01df692af931651abfa561a5fb36ff8acb. 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/QM24S2006861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3123287d7a84a24bc8f6de520079e6b5ad9e48a4485855c202047e2e2438c1c2. 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/QM24S2006860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8eed8f4bc0e481fae6dfbe150ebc0b598087db58bd28783d0227b99c672277. 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/QM24S2006931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3c1c61a1d0929df1c65f1dce2836e59d30ecc44bbcb18dc9817304d6a2f60. 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/NLZ8S1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bbae01843e4fe4af6ec6505d1049e005b23854d9d8c7801bf72aba7bd26d30. 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/NLZ8S1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f09870c5782d932621c3ecb55cdf1520c72a9ffba46948656ded931eb740e1f. 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/NLZ8S1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af7c6e1e6fdc055c6f4d0abe11bba8c713fca566395d476827acce97b36b77c. 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/NLZ8S1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4157016f0ac3ac95584794679d8a26961a6b15f8e59de7b132609feac8d07ec2. 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/NLZ8S1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb38778cfb3f63ee4dc8fa74e25656b446226307d65704bde91303eefe06e81e. 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/NLZ8S1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9559b29d92d755e264e6093f225f82c591f257c699b9e2d265cf4dc774cb3a0. 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/NLZ8S1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2f64a9368cd93297cf8b538ecd4e844a3da2c3d6667ca659715dec03605e77. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/NLZ8S1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc898d12022bdeebc9be24125f7ec689fe656a806491193168d99f6f6fe6ff94a. 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/QM4TX2421575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd629465abe95eaecaec6e0599aa33e72297982e2a42c704d162858239f94a1a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2421577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa534a5ec8c184ebbfde451b60e877721dc6d2d9a8ef58f6f71bbab2595dd05b. 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/QM4TX2421572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dff9932c5c3766e4be864a2cf1eb930bb3360043a39f305420784cd5aa7323. 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/QM4TX2421555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15173b0ef9d654e352afb7894c2dd9df53819534d0aa63b12fdd9cd5f8ac7155. 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/QM24S2201690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b648c90d3bc4f26eea65ae4d2cf321bb612d6421a34422b5b7363775a61fe13. 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/QM24S2201686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c2f52f55bedc4d22136320518ff91baae017b71f986d84965695e4dc7e8b54. 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/QM24S2201498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2184172e98ad001126ed74dc03b84da583d5309adfff8740457146737ac88fdd. 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/QM24S2201058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be62692d6f365f6276d01ec5514fc3ced5833059b73679acbe1d9a37dcd321. 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/SE5ZV2110016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2f77f7e1943aa0281253bd4a96f03a3b9f8b957f150522499ea7f696cdcb8d. 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/SE5ZV2101701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cdd01a5f9e69458213dbc471bb936fd2a9e76fb5a5d0849cb91b24e40c610f. 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/SE5ZV2101704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3123287d7a84a24bc8f6de520079e6b5ad9e48a4485855c202047e2e2438c1c2. 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/QM24S2006860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e2c8bf3f5ac8c5ff61f3fa28c29ad3efaff9d7adc0fb68b83198cede7f42c6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM24S2105678.