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 0x297f43d7b1adb9dda2a01c6e13cd02a412584e2d12577862625550ee32c9a1b3. 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/8c60bec9-a528-4082-b707-16b4480cb477.json and https://artists.proofprofile.net/proofs/artist/8c60bec9-a528-4082-b707-16b4480cb477.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 0xd4668986a347503315430b35f57d180c661387a566d974c20e5a162f3a8ae0be. 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/DEG932204329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d84df7c04640ea7d96fe930e56e38e45017251761d348295a7b083663c7d2e. 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/DEG932204331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f80d0417e04e697ad9f6f040d3d82a2b6a9ee96b037a413341550d3f04058f8. 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/DEG932204332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b353563a623a6d9458706bc63034d185c5eb06f542c48a7da223714653a04c3. 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/DEG932204333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc4e85a49d8204032c77f5835d3d2c5cedc0746ed57e93f3de7b5cb2a34004. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEG932204334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2428d6a17c4a4556580fd086e5555cca0635ccf7704d3c27e1190051300fac. 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/DEG932204335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1ca224013fa894b1865a179582d8a13791147be3de061e0c832fa0f4047b61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG932204336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa551f8bfabbb6cfb4f63e282526160bc6a8eea14d4b7d48c045575054671bdf8. 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/DEG932204337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070b32c5a7bf4bf779304f88e55702ab70af33d3386d33d5b695f02c012fbbb5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEG932204339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a6e15fc7acca06e4926b58dd011a918519883a54e27adfa26c3d8c4fd57f1c. 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/DEG932100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d650ffe46ea3e38159e3f17d7f785ebf7caa4301b51196c5996af611c81017f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEG932100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a5e30551ae2f6c234d699c8fd2d061eaabda3102de315513af645f87c6a59a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG932100245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3954ab353606f6f217d51b7519714e7eae97ad59c1229ffcf0dbee66821ea281. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEG932100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc649cc868c37d78fe96c9e8533f465e4fdfce108ce30c531a6f7d4a82392623c. 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/DEG932100248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c2d4c69e065f9ab6ea51304af243f3c708e8567d5d3767a62d1f872c18ec8c. 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/DEG932100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5de4556c7e3e0bf0f7fba0836523c6ce053b5baceb5b05c078ff3ebd3d445f. 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/DEG932100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a7683e5d794c0d9b854e56f4386ab9e4a3b14140531c74b78edd4d3c87b4e0. 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/DEG932100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42a913422d55c7bdd45b94dbf7dabdeb77024e1ffad573a59f1c97cbd0e63f0. 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/UKP2V1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ea47907a7c874bfa2e287e881316cfb30406fe3e747c72a4797955597e96b8. 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/UKP2V1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990c095dd4eaecfc76a0671ddbee9a990e6ab60fa942e418c4c7e994e087d64e. 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/UKP2V1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d15aa41a41b19be5e896054409ee559b107530bf8400f68e9b8f2994e8343. 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/UKP2V1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ae3ccb7b2613185f59c7093f9a6c981ea7d3d66e760a5eb9246be566ca4e0. 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/UKP2V1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8eabd743ca31392e7da4858fe0f876282faee2bb10dcf2788fff31533ca8cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG932401393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560e1d6156c8ffda18db07124356fa7667174edcd2a6cdacc0fe95d212efeeea. 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/DEG932401394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b353563a623a6d9458706bc63034d185c5eb06f542c48a7da223714653a04c3. 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/DEG932204333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc0f87467cd977a44dcd964eebd3bbabfedc2b212bde349fe1b6bb8d287c3bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEG932001376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf9a9cdb49f8582085c9d96ec73656e4919789b7a92ef57f3f342bbaa1c1b66. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG932001375.