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 0xd6f099f537f1e61c433a063ca45827369d4a11e3d9ea2c972ee6833d44086927. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9374274-2df6-4f48-84ba-03f2242f2cd3.json and https://artists.proofprofile.net/proofs/artist/b9374274-2df6-4f48-84ba-03f2242f2cd3.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 0x80b57de1f9913a5af1904acdfb05ef9801d66dc3edf96aac1af48ed9a4d8b388. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL1000002638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaddb9b314de14b235d7c42a130081d64d7c707c731dce8ba7b69fc64a69587. 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/IL1000002640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3177df5a12b621790cb85097a0dfec17cd7508a8b07623c72fc08a4eea24c3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:22Z), 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/IL1000002642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c889eac87c944da489f8056bd310e34d1fa6e3ed415b831214072d8c69a5a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IL1000002645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593627c420c90913a323c44a3cd466dd4bfc37305b1919779535d80bd7c7a6c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:09Z), 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/IL4191005252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e86a45f4e731e43671097d223d50945c4f4dd563cf5396e3e5f1c73c09ba01. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/IL4191005253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0a9d2b600867c7131125ea4c71e2f67bd80ee7c6b4515a63a5cac6c85aece5. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/IL4191005282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ecd912e1d5bb6920555574f60cc0f7e034a64b670cb91dd2a08ac3da2e44e. 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/IL4191005256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efefc145dbeeedb2374ac5ce3b34cfdfd8dd1d9df3867fbe4de11390338060d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:54:36Z), 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/IL4191005284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df60a3b3f0d4af445b6db0e6692c859fa0fc0f68eeb8e3c4e18aa3c347fc1d4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL4191005258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357a45e407f76b7b3c5431d91f482c93b2bb3fc03af39b9d41df7796c867ccf4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IL4191005289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4fe2ba38f2fd0c6ea9588fb0adaa05ee9e3adf268890f12e8d744c11089d22. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IL4191005263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67fb21af08d3b0b033463f8e9d950530c4eaec7b4d5bfb5535564229eceea85. 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/IL4191005264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44069c5c43f134a2533b928be3fcd6b61d5503632a4e5489d6643eb56671d5ba. 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/IL4191005266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02043aec735182bd59b08c8a6f955b9eded5a89d4cbe756d2a762fc0c59596a2. 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/IL4191005268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f3396ab057df9b88daa320b4738cbce403c4ebc8bf17fe5396e7a08633d4c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IL4191005270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5477c5901b32cf20c1e4036b57bff73aaffc5982903da81dd037a11fbbc13e57. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/IL4191005275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967a1597390c228f9b36cb59bd9a577e0dd6f8453cdffabd15a6cbcb8978056f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/IL4191005277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e169bf1c5b6c68fe74ae56873b861035cba581e82c246299f7f23a1323aca0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:30:50Z), 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/IL4191005278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2821e455e927d9411a1a21163f41d8b5ae2011330c8a95d6b13e353b37db480a. 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/IL4191005281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3608fc009d1365a963bb856ef4aa4e89d938fb744287eaf617319c0976b53ed9. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/IL4191005298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8333f29424d74343fa95e640d1f2c6a6829ef85d61682b988337a8e121d217. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL4191005299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f47e176ca96acb556aff299f23e9cca1c243239fdcb59c9107f19be207b6c55. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:40Z), 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/IL4191005300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46888930737089ccba5306251eea10fbbc8e85c0025e1f3a8ffe87960ec07a9d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL4191005301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ad3caa6dc3e7e700603f1740cd3c4713a304986a52744e7e84b1a250a6f89e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IL4191005302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f1354c6b0365f59766e646a77850feeb371214e9cf34e7f9b7b0f828a9778d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IL4191005303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81307a55cabb1644bc3a69f785d57439320a817fb0f3fe0ae7bbfdbce2741ef3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IL4191005304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f249b436877f00f4f53d99c174782a4e1d94c3f3731aca15cebdc0cef7cc094. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL4191005305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acf0b287a79392c237084f98b3c3f4c35de90b80c2ddf580e1b4db441492bd8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:06Z), 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/IL4191005306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bf1bb4f5dc81a7f98d300a25f5068fb577440c99ac189b8b6ad40605291a62. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:51:30Z), 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/IL4191005308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba46dcabfa0b2b1023d807a499c26008b7b99d5693dd682e4a57f10ea84cfcb1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/IL4191005309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0ecb40df78531dd803e702b081ca5f8918123367aa6a53c9ddaae5480a31ce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IL4191005310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa0e203c7cf63c2f3771fca8f938102b89b60dc67ee09270e93898a2a85bc99. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/IL4191005311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa90408ac6cf1100e3767efebe3139330119d0972e658b1ec0adc7f27fa90106. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/IL4191005312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148ef7249cce353da642a69e51763c721d021e7416ccb983fc06e00357c119b5. 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/IL5840424502.