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 0x9827a03637d4ad2fc0186523e8ff09eaa149d1beb325e2f0a0efbf77b2ee7b21. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88867be5-3889-4699-be9c-62b4e056406d.json and https://artists.proofprofile.net/proofs/artist/88867be5-3889-4699-be9c-62b4e056406d.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 0x62818fd628f076c9df509fcd842a1218239c81a2f0578fabad439f5772250d76. 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/DENL82330995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b592d349ed4bb16eaf222eaacc80b545a30c9a13eaf4a015196e42eb1d4069. 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/DENL82330996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba797c6cbd6b9b7307127894fdc1d3f6a2e4f0d5478c5c0ea6ba3726542b3ae7. 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/DENL82330998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742890718bc015cb34c09b9c233857674ecacf79b7108f2220998412a358e01b. 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/DENL82330999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09caafd81f8055cd774b6b553ad59d7e7f64d734bb559a6701b260453604762e. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DENL82331001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0d2e4259df6ceeb5d2055a4b767af8e79d1547c30358669c7b40627113a4c2. 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/GBLV62120504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfdf041d2c8bf46ae92a280f89f9cf04fc8afee77cb90c82faf48180b484650. 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/GBKQU2169770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033d405b5fd1f4e446574624846d087562d09fe7c0faf137a78888fb4da77a02. 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/GBLV62107797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c9015a9b22092acd16daa40bd393087ec57126a6e78f2f852f23d05bdace04. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLV62107801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2286f8e41834d1b90a515ddbe205550d9212ef6089f1f8eafe31df9f5d06b4ba. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBLV62107805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799c973e1aee7ca89140a0fa401d5d33136c0ded6e4b6de0a027b112beb8c1a. 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/CH6542234023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e866044e41207249d7f7e1bd676d0e1196fa6ca6cb25507970cb846275ed2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKQU2294942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfc39d8b5e65bb68a26dfd40b1b0f72571cc14df45eb71e2fd24ec64c7a1019. 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/GBKQU2294943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467ea5cbf34d5120168961f94fcf37d8c9f56797b5b4207c9b7aa44cb44a6e3. 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/GBKQU2294950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bec74971517c4853055fd358d8a9da06a38bd6209141813d63ed3bd0766fb6. 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/GBKQU2294951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5ed569ae9bf9f64fb01d3ac508010a4219de747e5ec53c058d3ff9fe45caf. 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/USA2P2464002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d8b0d04954b98915f5fdfd43c5e448495a3cedc4a64bec8d95b161d32ba795. 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/USA2P2464004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31bd5dc27b28a7109a056f3ee33283e41bf21ff0ee22bdd9e72f14d0906a9d9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA2P2464003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513f028d396dd52d3537ff72fa5e10fb2b6ba1279aab1bcf95cc7456b2fed8b. 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/USA2P2417500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333f9a28672ef42fd560e76a6b39b0304bb6db065f7b9ec86b12e3f8dff30ba0. 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/USA2P2358211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8f1be032a6c1f13e5813ad599e09f15dcf9173e9a727eeee7806f8f167d8f2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USA2P2427359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a50b50eecec96cdf2f40cf8e708ffb30c03bff8fdf5ad25dbf058e662fbe3b5. 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/USA2P2427360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8db5cba1089696e4add4b383985b69b30490099d3f5c2d8f965099af1501701. 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/USA2P2427367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a86eb83fe4a82f4738c02a05a8580caa8473a7061f280b864292c8df0714a. 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/USA2P2427370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e2a2f728baed2b065f4dc3bc37843aa6a155364ca4a9285d7b49b41d25d31d. 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/USA2P2427371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fe54cbb3c02e2f36e92e427cc07f0a92e82db855a64a884c1950b82904c70f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA2P2427368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d69f03f76c930732f62c4ba5a6f9551f7a4c7d3ef0c8e0154e856a8259baaa. 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/QZS642292207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1df33262b88f0e6303be827a964759b1d7bbdd0fff282ee9c9d13698f8e4961. 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/QZMHK2214035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80400a406ae96b3cf9e9c0c5321a09c0eb41e1c0d427bed03da5a6b7dca7484b. 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/TCAIK2496951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee9280b12adf70084b0c33bdf1d9f747d98f0ea05154e69f481f8c87295430. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA2P2503635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090605c8de9b110fd51ba796618eb15ccb7777577721175b6eccba78ba12c57f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLV62202275.
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