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 0xa850a864f7b09e031efb0c6a220d3fff89af7bcbcdff6bb88ff88cd018ff6b91. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18191474-2a42-4274-b5b5-bac982edef44.json and https://artists.proofprofile.net/proofs/artist/18191474-2a42-4274-b5b5-bac982edef44.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 0x31e69791d50d46d0c7d1b701504e5ae52db60772cdf8e2195ca84021bb6225d6. 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/SEVGD0700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936166ab7f1c8964447354ee669fea6d6cc7394ddc7b17dd6d1846fe426c0b0a. 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/SEVGD0700402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bec752e1753b764eaa33030b831bed588092c67a75932af82c4466bd633e29. 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/SEVGD9801016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2413e8b58a729b49445a2d366f1d3fb2cf8ccce951755e65afab7c0e852e1c3. 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/SEVGD0500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94db44e20ef230243b684b92c9b141c5b6d9c7ecdb057b2e80df6e6624941b. 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/SEVSZ8100408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2294065554d7916568b8e9e51d8de851e4e82e08965ebca689b6e778a33616. 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/SEVGD9900518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d047ee5890298be95893fd51db97f13c6f57c22726c614a37a0b979726d7c8. 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/SEVGD9900514.
Du Gamla Du Fria (Sveriges Nationalsång)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34621afa76101205bfcd225bb3a9eadf0b3c0429cb48414dc727ee0876d30997. 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/SEVGD9600601.
I Fäders Spår För Framtids Segrar (Vasaloppet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf841b9d4de8f39f28332f73bf8e395bbc2c4265089ec1d3b13fbff81bb1b44a3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOJVA9706123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a585751ac2b6b6681d6d9d37c7816c2a25243733b0580bc7866192c727c534a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NOJVA9706116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc38301a429582923ca70e7982ffbd4c1cb76115be7b84cd902ed554de5fef5. 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/SEVGD9903015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf641fa5130b9fc3cd1e18474983a74e8b22bd4e18c8161bfd4ccdcf9f341864. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/SEVGD9903020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791f4e3c22e6d615ba3dd5d2674fd0af4065a80072d6f4dac345c17991796f0c. 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/NOJVA0526002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5194ffcca7afe6610eaf23ce22178750e7f172df2ab092c125cda3dfb1c3f4f. 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/NOJVA0526008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8312de7b77754793bae4d94590580c8c630b7f24c247eda5ac04cc7f32d25c23. 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/NOJVA0526010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ab192ff14503a1112a0de375a9754af75eccb422903e7324671d19bd3f6d83. 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/NOJVA0526016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b20dd8e873277c0a623e1a4bf97c5028257169fad15ad8eae2b1b82b332d52. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NOJVA0526011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe1546183e53f02673997287e35a7a692ec64100f045cb7bc4cd96d8f08fa5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NOJVA0526013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3589e444410d4c4119b0a6551d4ff7f025a06a49f8a783240ff75257785d329. 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/SEBGE0700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d9eb2c7bc0839c1a92862389208a2c688d833728c93299f2632fba77fd22fa. 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/SEBGE0700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561eedb2ee42a0be7d3b56488650c6e1a44a8e36676d34cf8c9c68877cb10ef7. 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/SEBGE0700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe724404120abddf331020456f2aa82d50e7c058cc934ef53587aaea383555f3b. 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/SEVGD9900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e26e86ee669e7bf64e64705ff8514ef4a608d373774c55f49e95640c3aa3a6. 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/SEVGD9900421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4553011884f1b261cbde9bec458a975548341cf18546886944c292c7da9b1c. 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/SEVGD9903008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07070b53926cb05edeef7340b7c288c30eb91f17ea4e0eb5a068750401312f. 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/SEVGD9801001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9985ecbc8b4c91f05fb680ed636bb57e7df509cdd175f8bb39a21e47e3fa0b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEVGD9801004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258d63ec6975af0571797093c37852ff124f70d2bbd51a20eec4c0fb2f0004b8. 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/SEVGD9801008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa65c2a3573df915521585b7fa9f63c226743011a178833075499529dbddc5a5. 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/SEVGD9801009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bec752e1753b764eaa33030b831bed588092c67a75932af82c4466bd633e29. 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/SEVGD9801016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6efd71705917409b540e15ab1cb26ed8ba79880e628ea3934a3eb5d1481c2b. 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/SEVGD9801017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8176dce064a1e0de7da2cdd679581cd98605d61254cf6f78754691003ec4da9c. 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/SEVGD9801018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137954c1ad86f919b1f1938291140d69d7178f2dbd62ae035d0fcc12aadc527f. 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/SEVGD9900412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8176dce064a1e0de7da2cdd679581cd98605d61254cf6f78754691003ec4da9c. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/SEVGD9801018.