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 0x5caf00eb41033166b525cea1119567553a5995c79405168facc896312ff7d7c9. 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/f531506f-1bb6-44b5-ae3b-e76eb038fa5f.json and https://artists.proofprofile.net/proofs/artist/f531506f-1bb6-44b5-ae3b-e76eb038fa5f.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 0x2a7c698bd860802861fd776bfe538bd4773b6bcfa2e8b9b32d541c87a6f7df65. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXIV82168651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ffd20b128c0f48be97cf18669b117738a9045e356e9102cf9c3a66d0a862b5. 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/BXIV82133793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbae072c627ac2422e05b36a62ef9f288ce74c4fdf61a1793a9f38f35e4e2549. 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/BXIV82139045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d42c98083c2d639ac2aa509b600a86c60f0d2d69b4be4c6c2e11cdb9100ccc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BXIV82162928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00979c5705bc1ba157de65868cb7d93c125d483f822ac55e37893c80e8ae068d. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BXIV82142217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34ecaeda8399138ad5bf42f165536fe0617d5ae4853f21c1f379f36d9167945. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXIV82257204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fbf9f7736ac87159c03b8014a4219c29ef9d0fe15ae7384641a0e2c4a28d4f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BXIV82207153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd285206600f16b881f9b38f3163f2888844d4c5a7dce63ac411dba4d63f9157. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZHZ62289730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dd9baa6c3d829c229e873175c18ed51e562223c7575d4feaceb9f72b2d088b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:26:41Z), 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/BXIV82276391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364f17ab616ed00f1ae2bb16b4c5a68153d4ff0057adbd1390c131b95357bf44. 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/BXIV82214820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b37bf1d7bbb4317eef3c87eb032e373b15873403333dfd8e9d02670a4e405a0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BXIV82292034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0912e9ab72f7edfc7a18222aff888fe697a70a7ec704fafca243fc7f8528b522. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:44Z), 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/BXIV82295720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4446a5713259afa71f1aa748183dd03c7c5648e9872dc3712b66a9607c11a69. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXIV82224461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a3c19d05eb80047e2f892484da6c99f6e4edf47f4c3a72eebe0b97c1c47294. 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/BXIV82283559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb486f639951ea0175bfa8b6e63248d31edc4cd4537c57df9dcd0d1e5d9789af6. 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/BXIV82203916.
Noite de halloween, a fumaça te assusta ? Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b4be47a265c9c0c05ff8502adc5397d6408cb6e07c86cd6f6cacd024392df7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXIV82243470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38db9abb07b0b415c0c787ba4b7aa48f49d92b814160df7392f66ae8f8a30d49. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:41:14Z), 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/BXIV82271175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c13d471bf8bedc154d64229143c98af9b4ba256a9225547a7ab335ec81e703. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:36Z), 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/BXIV82288098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffbc78bf4aae55ad69188c07da9e73a81d4b57634b40a7ff83894f0af2f4821. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BXIV82241365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281aa0549b9200d0d621845fc54ffdc8bd925f3c631d3d3e9a933c137655604. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BXIV82374391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5294594ac8dbc43820548e6b3674ed324072ce519b99280989622abcb98a4798. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BXIV82353257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8a93c72fde87b4c177ff3e01afba35b473bc13e59b84bb15b82e7f6065e826. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:36Z), 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/BXIV82343475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9908e50b8593afd4680c2d6594c910cd7f6abd725a470395975a05836567bc. 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/QZW9M2325819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff56f7cf2bbfac0007c457205438a83a2aa6fbe75928eb09f186d9b2433d331. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZW9L2485728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc0876e4c9a74f150455430cce111e4fd733607ec6fc45c98c8872a89da2c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:28Z), 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/QZNJV2513369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de8c99f37d3fde41730162db9cf9192e3c771094e23a67d877d50ac3ef0a29. 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/QZHZ52146934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab54debcda4c44aa0e190ef569c366e2a658ede512de97085fc2c1da3cc16569. 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/BXIV82387748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0c8805fc1e646c7f72fd4cd57c00fc30470ce0d4cb5f7cdf72be3aa0701a8c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC2GV2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad05f0b8f6423442a192612b8e7e668125b053d42d4f8a7127d9ee0eb76fe3a3. 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/QZ5FN2352111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715d090c2b92e8ee84cea2e395f945d6f956f52074e1c2698f6036ba3d1c5a1d. 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/BCFO22100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2067a476582da512f219ab6971e39f03cc876ca38fe7ab6ec0d60e8719d8fc. 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/QZNJX2167833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020b94cf48f9224ad3460b0446243b19ff2e5d6fcabfe4b9fbcff7258b3905b2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZGLM2419284.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda2342e03e9bd468d862022b134c6956af4eed4103cb98ec7b10afc1c2a0fca. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/BCGBQ2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3fa2d5c2f068e0931efd0ff68e5e6e93c5e84b5684de73694add61ed2fb0d6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BCGBQ2100005.