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 0xe963047b42088fa98e48539f54bf265674fb101c3ea17b4eb5a2f13f6a4a4e73. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/254ece9a-2fe6-4787-b571-2ec3df7e8e52.json and https://artists.proofprofile.net/proofs/artist/254ece9a-2fe6-4787-b571-2ec3df7e8e52.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 0x6eb21a0d274982852847d41dfe2a5018ace14d667a34e84d7292042c6f95ea3f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAHB2396786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee0036021a7b55a5c13e38392462b2bc7e85174ca1cbb1bd0eef63615d99a14. 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/TCAHB2396801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd566367c93d06be04a7237ba45847670da957aad97a32d45a29e5612b45bc3. 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/TCAHB2396871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0605825b1396b68f57aba2d8786abef5ad1dae16a7510fe6ae547e08ca710cf4. 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/TCAHB2396893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52d56f48f93f2c758d220a07e3f4cb4e3294b2a5639620bbaf6baf5994146cb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:39Z), 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/TCAHB2396936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f6f769acfec8c1dcc1e81f092e3a82249bbed254cdf729baf68a614c9a6b4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:00Z), 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/TCAHB2396914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346ce794018c1e2bbc6b182242249042993e2c5db035125d6107c26c46188a0f. 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/TCAHB2396920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0028b9d2ed8013814313bc7ffcc1730f7c2f2c0e4868f41dbe7853f3d93b34. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHB2396925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864bc5ed08041ff6ca573cb9c5081709c891ae4be4f8f904940a0c548c9a39b2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAHJ2377654.
Waza City // La Douche la Plus Chère 2 ma Vie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02ff2ebfb81c8b993163d2b8189ca294ac7d4f230b1e248881bbd70688c5b8e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJC2489844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6816d92dc86e0163c4b57429cac769fefe1f8052eed5dadb3361c00edcd440. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:57:02Z), 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/TCAJB2489874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb50896848d7ae0ae77853655d5220b1e83b2ddffcaf16cf591a0067f13324. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJB2489890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c48634c99bb17259ebe4a9346805f537c670dae1f7335ff7883be797518f872. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJC2489908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd8aee395c335bc5e778e45d8e2ffdb1b368edb3bad0c85012c6cbca2800d9e. 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/TCAJB2489922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79025f8e9118bea4b9d5e4d717be54e65468f35408de9a87af77320bd59cdd8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJB2489939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3d4b3e818a191cdf78b35446c8eb944f32c4eb72b010ce2b6be1a35881da6c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAJB2489977.
Rupture Conventionnelle // Fournitures 2 Bureau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da69708d44a4d0562b6896de9085e45cd06a222fd2ee3400c8fb197f8d9888d. 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/TCAJB2490105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02ff2ebfb81c8b993163d2b8189ca294ac7d4f230b1e248881bbd70688c5b8e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJC2489844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3d4b3e818a191cdf78b35446c8eb944f32c4eb72b010ce2b6be1a35881da6c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAJB2489977.