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 0x650ed1252a308d38bf5726ae03ddf3ad9c4369e59b571508aeba120ee22b2e4f. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc5b9c6d-238a-4444-931e-f83a4eff77be.json and https://artists.proofprofile.net/proofs/artist/dc5b9c6d-238a-4444-931e-f83a4eff77be.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 0x5bb757d51b8740a0bd109dab063253c30d37f36666f043cbae5ab6848c85aab4. 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/DK2MA1901802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e94a3055155edf129fa1ee60330ab4db8383ec7850294ea81cb47e2b29fd5b. 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/DK2MA1901804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b6489a7d3ca6885b8d1426d5627509bd308db1ed215e0214ebc99c740d835. 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/DK2MA1901805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da0d5e3b01184f6707e94b2c681ed52519978a73522ba77ea1da00c93549c8. 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/DK2MA1901808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ba4aa7560a6ccc60040547e2624123e34019b3365a19d8d4981312959fdc3f. 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/DK2MA1901809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fee52aa49407eaf6e3b5dcfcce132a2b2a8dafa7495b573848c5d2d64fc123. 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/DKBKA0300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40707b96f73b9357a9b6c7e674c7af01306cbe964f3ff37b4e3c191a4f692a84. 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/DK2MA2000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2229ea06817777f5be82998184961a62e776ef28d9944be0c675dfa2f565639. 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/DK2MA2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f4754d1420d125ccf47b9bd72910b8387e2dfd822add4651a45332a51adcd9. 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/DK2MA2000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66b491e9614c3d689b5e088fff3b051f23f2983765877a1f02326840c9925f. 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/DK2MA2000509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94433f8e024e2021c208ed5e9e570633e40ecf7a8d89e22c61f42b246de855b0. 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/DK2MA2000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8f51340f8ea53ade882fce826642b541b8edcd9244f7fae8f17b1ad6805c4. 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/DK2MA2000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32084875814594ee3b43e51adc08e030e1b376c1d7c82776c819083f0d3814b4. 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/DKBV79300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd66cf1ae3069df753d74bb56fbaf06ba4b092954ed67b25c29b9180b5d74189. 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/DKAAH9500418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bf730aa605d6493f53e1437eadd8ba9162d3508e4310787be03c80672ff042. 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/DKUM71400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf19fbd7229d793956248ff319cc21773cfbde29194b7a729ffd27625b318d2f. 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/DKUM70800990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405bc95381d70bd294099f94f1f2b6d23dec3d44229a52ffe490071c3e00f81f. 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/DKUM71300498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657d8d3e0173c5b7765640f0451892354469786a9553fa173d504a55268435cf. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:09:45Z), 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/DKAAP0300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cf2962027f04f1eae13ac8b1840b4a28455c82dbe25d9a336ad5a8e2872696. 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/DKPNH9700708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246d4cb39c6030642d4be8e423aa68f89aebd5f46b60fb16fb997b925f5ef34d. 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/DKAAH9500419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7889beaf2f810b50d4bca8ca758e4184dbf1a612c9b4ef9273978c47d1136db. 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/DKBV79701304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64290589dcd0b7523e7ef71a9dd137d25a89c1eb1309f83fe8bd29a2dea3e8de. 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/DKUM71900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4486d2ac71c1e56f4af1e128b5815c0c44ab360c0d9aa6c69787586b1cded48b. 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/DKBKA0300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fee52aa49407eaf6e3b5dcfcce132a2b2a8dafa7495b573848c5d2d64fc123. 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/DKBKA0300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32084875814594ee3b43e51adc08e030e1b376c1d7c82776c819083f0d3814b4. 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/DKBV79300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bcc69dab2cec4e0f77ec56d15ca5741d7c5f68f61b94abba7669599d8f359d. 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/DKBKA0300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bf730aa605d6493f53e1437eadd8ba9162d3508e4310787be03c80672ff042. 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/DKUM71400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb64a8fc5f73a47ec5e8e882c13b2806adb6ecac0ebb59e43370c86fdc22aca0. 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/DKUM71300826.