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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db9d39b0bd0b5fd7e05de2202029196a4b2f81061c63107199ef93fe139b31a. 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/9f98192e-269a-4bc3-ad9a-23511b5f8057.json and https://artists.proofprofile.net/proofs/artist/9f98192e-269a-4bc3-ad9a-23511b5f8057.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95889574afa082d63f98c856f267fa02290f36fc44d0b015771df5d2030cd643. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVGT2000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19989c16b98fa4fb7967fd392ff5f29f34eb2dc3fe6246f56d006ab5d46454. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SEVGT2100015.
Yankhos Barnmusikskatt - Klassiska barnlåtar vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f47a31e07ff92c05207d58b3d209b9a53eb22e34acc1746072097929739160. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEVGT2100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dadaaf7cf9a4d46b3172871277b6a3f9162e43a2f18dd5de83a1b466aaf186. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SEVGT2100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801d158b1bdb62fc7ed269a45dbf4a50e944291101e810ed5b68c33cda73c9f0. 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/SEVGT2100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc997dcb7bb012ad26076c58e92550afab976897c257d3dd421305feff4566f62. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SEVGT2100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f8e6a2a44638f786b99c53adab4f0978834f41bdddbf560762f42cef77638d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEVGT2100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704fdfb22aa54d5e0e1d3e64d6cd680c1ef25953d38c164fe9b8994f25b6d1a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVGT2100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311531cf0714b8abeb973c0e3974a0bf0e7e4dc54dc1f226049e28106c8f63c9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVGT2100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d1c5b1106a0c2f31d88391e2f0b85fce69378aa2944c9f05a229f3b791c60. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVGT2100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32944932cf30bc3dd5ac49424a71e1f2c78ecfd7ef19b1b911712294d75480f7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SEVGT2100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533a7432c9e8d6f244845d889acf9a3e5daa381eb2c77dabe4623443174e669d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVGT2100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc410fe54254a9cc6c71e823ef625302b6773c50ac01aa8a271340ea22e608363. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEVGT2100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b77e4c9cdcefcd44b9f6f7bc85819df8d61e70d4d7bf663ad2719e44e71603f. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/SEVGT2100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61ec32897d0b3a39bdce22280b22f635c9945aedbb2a865a34d26c36d397d4b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVGT2100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e19ca41515601c699861ba562a85ca2e191c73e5a7a14a08b5a0d1a0cd3995. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/SEVGT2100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c1f4ae4c53b68166a2c8e5594a74423fb8fb4d28304e5d584463488bef76ee. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/SEVGT2100266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d32098acee16ff25fc2b6db29e31a030d1be6fc745ad8e7333a126e3196098. 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/SEVGT2100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8a64eeb7c7fe2b443294f347ab84abe93c79ccf910cb931e570d3bb27ce865. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SEVGT2100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad6702d0be8a28cc33c2be7a554420cb44119ef5b5a7327da13918da2612458. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVGT2100417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0875bb9af555cad179e5859cc36b2d1ce0aa264a6dcf74a3e06e996e5b33890. 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/SEVGT2100419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a242fa1e8d4bdf658f17a5676fab613b7e03bbd65b9efd0170a30d704ef9f95. 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/SEVGT2100420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b33aea307ec1a72ef3e4655020a25a75fc7df776d61631f97dc0b8ea8c8de80. 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/SEVGT2100565.
Yankhos Barnmusikskatt - Klassiska barnlåtar, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909bea78148005075abb0310b94571e5ced2e3d4db443b5771483f92188b02c4. 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/SEVGT2100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271dc9c654b9c74517f8c29a0e6bb5de507401e6bdb571e83724ea99417df7de. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/SEVGT2100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac60977530a6999afca1b3ff9ec2d0b550f022c77762612abae3277700c7c05. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SEVGT2100614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0e5ab88b7a5241444530662fb3122dc50ac7694ec8279c60356efabb82b5a2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SEVGT2100616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0a812d3d02d71a5b874fe1db8eb415183d496df921107b4eb4239053f64102. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SEVGT2100621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a1fb703d69836246cf8fea941f31f518694468aebc0c5a48406992e1753b4b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SEVGT2200046.
Yankhos Barnmusikskatt - Klassiska barnlåtar Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf012c08e444902f67b054978095a7b77a856fa7c547d001cbd6c69a4dcc9573. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SEVGT2200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a58ad0889823a3162d3a8dd7fba7209a30161d3881808f450f38d8fb2315a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVGT2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1ea37a3aa9d1c635eb7856e4a9eec58de4ea1e22aaa04d1ce77eea0a79af0e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEVGT2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade03523ec1395f405a502c260165d63b3aeba2013a10930d15adbf5a824329. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SEVGT2200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a67d9042e355fe314a86f39c0d382153185cac18eb1fb71caeab942ba260c. 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/SEVGT2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6477dd88675d92de0b281de3f51998e7b5f24dcfbe431c7cafd1f37361d851e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVGT2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e3db50439fa04539e61f506be1733b43a9faf999ced446ae8c764395ea1601. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SEVGT2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0156262f1a93a5b598402d827976015775d3e5e99c3964c24983b1e85e2aa205. 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/SEVGT2200109.
Hur ska jag göra för att komma över vägen